CBF1000

CBF1000 => Lighting, Electrical, and Wiring => Topic started by: The Poet on 14 May, 2015, 10:50:41 PM

Title: What is the best replacement stator?
Post by: The Poet on 14 May, 2015, 10:50:41 PM
Hi everyone.

I know there are many threads around stators, but I would like to focus on one fact.

If your stator fails and for whatever reason you decide to replace it yourself, what is the best stator to buy, who makes the highest quality replacement?

.
Title: Re: What is the best replacement stator?
Post by: richardcbf on 15 May, 2015, 12:59:44 AM
Maybe the ones that are supplied with a one year warranty?  (Honda UK give 6 months and price is higher)
 :431:

e.g., (not recommendations).....
Warranty : 1 Year
http://www.ebay.co.uk/itm/Stator-Honda-CBF-1000-F-S-T-2006-2007-2008-2009-2010-/231306043526 (http://www.ebay.co.uk/itm/Stator-Honda-CBF-1000-F-S-T-2006-2007-2008-2009-2010-/231306043526)
or
One year limited warranty
http://www.rmstator.com/en_ca/products/rm01078-stator-honda-cbf-1000-2006-2010 (http://www.rmstator.com/en_ca/products/rm01078-stator-honda-cbf-1000-2006-2010)
or
One year limited warranty
http://www.motoelectrical.co.uk/types/stator-coils-/stator-honda-cbf-1000-2006-2010-rm01078 (http://www.motoelectrical.co.uk/types/stator-coils-/stator-honda-cbf-1000-2006-2010-rm01078)

Most of our products come with at least a years guarantee.
http://www.electrexworld.co.uk/acatalog/G112.html (http://www.electrexworld.co.uk/acatalog/G112.html)

NATÜRLICH MIT GARANTIE ....(NATURAL GUARANTEED .... & PLEASE ASK ANY QUESTIONS BEFOR YOU BUY ....)?
http://www.ebay.co.uk/itm/CBF-1000-LICHTMASCHINE-STATOR-NEU-CBF1000-ALTERNATOR-SC58-ALTERNATOR-NEW-LIMA-/160716269255 (http://www.ebay.co.uk/itm/CBF-1000-LICHTMASCHINE-STATOR-NEU-CBF1000-ALTERNATOR-SC58-ALTERNATOR-NEW-LIMA-/160716269255)
Title: Re: What is the best replacement stator?
Post by: Bifferman on 15 May, 2015, 08:56:24 AM
I think you will have to make your own mind up from the more recent threads on this one. I doubt if there is a 'best one' to buy.  To help you it might be worth centring your search around threads where Shumba has contributed i.e. do an advanced search and put 'shumba' into the by user box, this will bring up most of the more relevant posts on the subject (incl other peeps views and thoughts).
 
Shumba is hot on Electrex and amongst a myriad of others West Country Windings are also often mentioned - but there are others out there now.
 
As you will have no doubt read simply exchanging a stator plate should yours fail might not simply be a matter of the stator itself (although it usually is).  Honda's solution is to replace with their 'upgraded' stator together with an 'upgraded' flywheel and this seems to be a very successful fix and while there is the odd failure even Robo, a very high mileage user, has had c.50k miles out of a Honda combined fix.   Others believe that a different regulator at the same time may assist.  The fact is that, amongst other possible factors for failure, the stator overheats because it is not cooled sufficiently and this has been addressed on the MKII with a small rework of the oil flows within the crankcase. 
 
I bought a new/unused Honda stator and keep it handy.  If I hadn't fallen lucky on price (£50) I probably would have gone for one from Electrex or West Country Windings deciding on which after I had a good chat with them first.  IMO, it is unlikely that you will ever fix this problem entirely whether by choice of replacement stator or otherwise.  Worth remembering that the majority of original stators do last a long time and any reasonably made replacement is likely to last for a similar period.  However, given the relative lack of information currently available on after market success/failure record then to me the better alternative, assuming that money was no object, would be to replace with the Honda stator/flywheel combo. 

There you go, I have given you my thoughts where to look for a replacement but are either of those the best  :187: , god only knows and he is unlikely to tell (no disrespect intended). 
 
Andy
 :149:
Title: Re: What is the best replacement stator?
Post by: The Poet on 15 May, 2015, 02:41:49 PM
Thanks for your replies, I have to say I don't have an issue at the moment (I hope), but having read the posts I guess it's only a matter of time so I'm trying to be prepared.

 :028:

.
Title: Re: What is the best replacement stator?
Post by: richardcbf on 23 May, 2017, 11:22:05 PM
2 years later....
http://m.ebay.co.uk/sch/i.html?_from=R40&_trksid=m4084.l1313&_nkw=stator+cbf1000+-cover
Title: Re: What is the best replacement stator?
Post by: Robo on 24 May, 2017, 09:42:45 AM
All old news  :028:
Title: Re: What is the best replacement stator?
Post by: Taurus66 on 13 July, 2017, 04:04:36 PM
I had a stator failed on me whilst ona tour in spain, lucky i had the sense to buy a spare one and had it and a reg/rec on the bike at the time, so was able to do a road side repair with some degree of ease..

However my replacement stator a g112 has decided its had enough too.. what is it with these bikes and stators, why do they fail so quickly..

First one was at 27500 miles , now at 36500 miles literally a 9000 mile life span..

Ive never had a bike do this so often..

Is there something that draws roo much current and overheats the stator coils? Or just a really s**t design and poor quality parts used in manufacture..
Title: Re: What is the best replacement stator?
Post by: Bifferman on 13 July, 2017, 05:12:36 PM
*Originally Posted by Taurus66 [+]
I had a stator failed on me whilst ona tour in spain, lucky i had the sense to buy a spare one and had it and a reg/rec on the bike at the time, so was able to do a road side repair with some degree of ease..

However my replacement stator a g112 has decided its had enough too.. what is it with these bikes and stators, why do they fail so quickly..

First one was at 27500 miles , now at 36500 miles literally a 9000 mile life span..

Ive never had a bike do this so often..

Is there something that draws roo much current and overheats the stator coils? Or just a really s**t design and poor quality parts used in manufacture..

If you care to do a simple search you will find more written on this subject than pretty much the rest put together - start here :001:


Next the VOSA Thread (if you have a couple of days to spare :028:) - https://www.cbf1000.com/index.php/topic,6340.0.html

Followed by Rev Ken's Confessional (another half a day of reading) - https://www.cbf1000.com/index.php/topic,13965.0.html

See reply 2 above or read on;

At least another 20 threads on the same subject but the bottom line is that the stator overheats mainly due to the fact that there is insufficient oil sloshing around the stator.  Honda resolved this issue with the MKII.  Hold onto your gears a bit longer and keep the revs a bit higher - generally put, revs below 4/5k and oil flow into the stator chamber is poor, above 5/6k and the oil flow significantly increases (there is a thread somewhere on this as well) and the only consistency that I have seen over the years is that those who ride their bikes a bit harder appear to get a better deal than those who pootle about.   Also some say that a replacement stator from Electrex is better made than the Honda one but even those are reported to have failed, others recon the regulator could be a better design and both these points may be so but there are lots of MKI  Biffers around still on their original stators and have done high-ish miles as well.   

Honda eventually recognised the issue and increased the warranty on MKI failed stators to 7 years (2 yrs + additional 5) and replaced both stator and flywheel with modified units which significantly improved matters but it was not until the MKII came along that the internal crankcase oil way to the stator was increased was the problem satisfactorily resolved.

Given that a replacement non Honda stator is £125 or less and it is a simple job to replace (2 out of 5 spanners difficulty on the Haynes service manual scale of difficulty) and the fact that you can get a little warning of imminent failure from the MIS light flashing at you or BETTER still fit a £15 Gammatronix or Sparkbright LED battery/charging warning light it is no longer the big deal that it was in the earlier days of the MKI.

 :149:
p.s. Enjoy the video :164:

 
Title: Re: What is the best replacement stator?
Post by: Taurus66 on 14 July, 2017, 04:59:31 PM
Its a simple question... thanks.. ive read pretty much all the post about it but it seems noone has an actual answer or at least none that i could see..my bad.. so to improve the oil flow .. is there a known mod with out the lose of oil pressure?
Title: Re: What is the best replacement stator?
Post by: Robo on 14 July, 2017, 05:08:20 PM
*Originally Posted by Taurus66 [+]
Its a simple question...


.. is there a known mod with out the lose of oil pressure?


And a simple answer NO.
Title: Re: What is the best replacement stator?
Post by: Taurus66 on 14 July, 2017, 06:36:17 PM
 :152:
Title: Re: What is the best replacement stator?
Post by: Bifferman on 15 July, 2017, 04:34:35 PM
*Originally Posted by Robo [+]

And a simple answer NO.

Or buy a MKII where Honda have solved the oil flow issue.  Exactly what they have done :187:.  Even if we knew what Honda have done it would involve a complete engine strip down at best in order to attempt a similar remedy.
Title: Re: What is the best replacement stator?
Post by: richardcbf on 15 July, 2017, 08:56:08 PM
*Originally Posted by Bifferman [+]
Or buy a MKII where Honda have solved the oil flow issue.  Exactly what they have done :187:.  Even if we knew what Honda have done it would involve a complete engine strip down at best in order to attempt a similar remedy.
Or buy a 'just' a complete MKII engine and put it in your MKI bike?
https://www.ebay.co.uk/sch/Complete-Engines/171108/i.html?_from=R40&_nkw=honda+cbf+%281000F+%2C+%221000+F%22%29+engine

 :164:
Title: Re: What is the best replacement stator?
Post by: SaturnV on 16 July, 2017, 08:43:46 AM
*Originally Posted by Bifferman [+]
Or buy a MKII where Honda have solved the oil flow issue.  Exactly what they have done :187:.  Even if we knew what Honda have done it would involve a complete engine strip down at best in order to attempt a similar remedy.

 :0461:
  Bike design vs car design - bikes use scalding hot engine oil to 'cool' an already hot stator whose coils are coated with varnish to insulate the individual wires that carry the electric current (i.e. prevent them from shorting out).  However the varnish has a certain melting point so if the coolant (in this case engine oil) flowing over the coils is not keeping the windings below this temperature then the varnish starts to melt and you get short circuits in the coils and that char-grilled appearance then 'bang'!

Car alternators on the other hand are air-cooled and they have additional fan blades on the spindle to assist with the cooling.  Never had an alternator go pop on a car and when I look at mine the windings are still looking in good condition after 95,000 miles. 

Maybe  :451: to mention cars but the design comparisons are fun IMO - bike stator design is obviously like this to save space and weight I assume - any bikes ever had air-cooled stators anyone??
Title: Re: What is the best replacement stator?
Post by: richardcbf on 16 July, 2017, 08:55:57 AM
*Originally Posted by SaturnV [+]
.... any bikes ever had air-cooled stators anyone??
Yes, the Honda ST1100A (and ST1000)
For more information, Google search for st1100a+air+cooled+alternator
Title: Re: What is the best replacement stator?
Post by: SaturnV on 16 July, 2017, 09:29:03 AM
*Originally Posted by richardcbf [+]
Yes, the Honda ST1100A (and ST1000)
For more information, Google search for st1100a+air+cooled+alternator

Thanks  :028:
Title: Re: What is the best replacement stator?
Post by: shumba on 16 July, 2017, 09:47:22 AM
*Originally Posted by SaturnV [+]
:0461:
  Bike design vs car design - bikes use scalding hot engine oil to 'cool' an already hot stator whose coils are coated with varnish to insulate the individual wires that carry the electric current (i.e. prevent them from shorting out).  However the varnish has a certain melting point so if the coolant (in this case engine oil) flowing over the coils is not keeping the windings below this temperature then the varnish starts to melt and you get short circuits in the coils and that char-grilled appearance then 'bang'!

Car alternators on the other hand are air-cooled and they have additional fan blades on the spindle to assist with the cooling.  Never had an alternator go pop on a car and when I look at mine the windings are still looking in good condition after 95,000 miles. 

Maybe  :451: to mention cars but the design comparisons are fun IMO - bike stator design is obviously like this to save space and weight I assume - any bikes ever had air-cooled stators anyone??

 There is a difference between stators and alternators stators have a constant out put, alternators have field coils that are only energised when out put is required and so do not need much cooling .  Some of the Yamaha bikes use air cooled alternators that are far better than any of the Honda stuff.
Title: Re: What is the best replacement stator?
Post by: richardcbf on 16 July, 2017, 12:58:41 PM
*Originally Posted by shumba [+]
There is a difference between stators and alternators stators have a constant out put, alternators have field coils that are only energised when out put is required and so do not need much cooling .....
:084:  :110:

The alternator gets its name from the alternating current (AC) electricity that it produces.

"A traditional alternator uses a coil that uses DC power from the battery to produce a magnetic field....

...Motorcycles often require a lighter weight system that can produce power with no battery installed or with a small battery. This requires a slightly different way of making power.

The alternator on a motorcycle or ATV converts kinetic energy (power of motion) into electrical energy to charge the battery. An alternator is made up of two parts; the stator and the magnet rotor, also known as the flywheel.....
."
https://www.electrosport.com/technical-resources/technical-articles/motorcycle-stators

PERMANENT MAGNET GENERATOR

....The magnets themselves have north and south-poles and the flywheel is rotating around the stator. The stator is a metal core with a lot of metal poles that have windings of copper-wire on them. Because the flywheel is rotating and there are north and south-poles inside it, the windings of the stator are exposed to first a north-pole, then a south-pole, then a north-pole again etc. This is the varying magnetic field that is needed to let the winding itself produce AC-current. The windings themselves are connected in a star (one winding has two ends and the three ends of the three different windings are connected together) so the stator has only three output wires emerging from it.

This generator-setup we call a permanent magnet generator. This is because the flywheel contains magnets that are magnetic all the time. The output of a certain stator is depending on the engine-speed (the higher the speed of the magnetic-field variation, the higher the stator-output), and the force of the magnetic field (which is constant) Basically the stator produces a certain output at a certain rpm.

The Field Controlled Generator System

The other system used on motorcycles is the field-controlled generator. The system itself works on the principles as a permanent magnet generator, the only big difference is that there are no permanent magnets but instead there is an electromagnet that provides the necessary magnetism.

https://www.electrosport.com/technical-resources/technical-articles/how-motorcycle-charging-system-works

 :028:
Title: Re: What is the best replacement stator?
Post by: Bifferman on 16 July, 2017, 07:31:32 PM
*Originally Posted by SaturnV [+]
:0461:
 

Maybe  :451: to mention cars but the design comparisons are fun IMO - bike stator design is obviously like this to save space and weight I assume - any bikes ever had air-cooled stators anyone??

LAMBRETTA'S :164:
Title: Re: What is the best replacement stator?
Post by: SaturnV on 16 July, 2017, 08:12:18 PM
 :mfrlol:
Title: Re: What is the best replacement stator?
Post by: Taurus66 on 16 July, 2017, 09:51:48 PM
Im surprised some enterprising fellow has not come up with an additional oil cooler to feed colled oil directly into the stator case and spraying the stator with said cooled oil..

Ive been thinking about this myself , cant be to hard to make a sandwich plate and take the oil from its original cooler , to a 14 row external cooler with the return fed into the stator case..

Hmm me thinks a project is coming on..
Title: Re: What is the best replacement stator?
Post by: jm2 on 17 July, 2017, 11:35:09 AM
Air, well fan assisted, ones can fail too.

My Scorpio car (some 20-25 years ago) suffered an alternator failure (I didn't recongise the signs early enough!) and assumed Diode failure but on disassemly the windings were "well charred" and looked like they'd be burning out for ages (probably a winding at a time to begin with).
Fan, diode pack, bearings all okay.

I don't know who made those for that model/era Ford but doubt very much it any of the M/C manufactures.
Title: Re: What is the best replacement stator?
Post by: Robo on 17 July, 2017, 11:39:49 AM
Me thinks a silly topic  :430:

Tell me is there any kind of electrical product that doesn't fail ?

"How many people does it need  to change a light bulb" 

If you worry about and can't cope with a stator failing . answer buy a different bike. :028:
Title: Re: What is the best replacement stator?
Post by: J-man on 17 July, 2017, 03:02:07 PM
*Originally Posted by Taurus66 [+]
Im surprised some enterprising fellow has not come up with an additional oil cooler to feed colled oil directly into the stator case and spraying the stator with said cooled oil..

Ive been thinking about this myself , cant be to hard to make a sandwich plate and take the oil from its original cooler , to a 14 row external cooler with the return fed into the stator case..

Hmm me thinks a project is coming on..
Engine oil is usually around 100 deg C, which makes it a fine cooling aid but it just has to get onto the stator enough.
Even if you had cooler oil at disposal, same problem would be that it doesn't get to the place enough where it needs to be at lower revs.
If you make a better oil feed towards the stator, it doesn't have to be cooler than regular cater oil.
This is what they did on Mk2 as far as we suspect, just get it in there more. Maybe they also provided better insulation (more temp resistant) on the stator coils for Mk2?

Some brands bikes make the stator half submerged in normal oil level. Then if you would open the stator cover you lose a lot of oil.
Biffers you can open stator cover and see it's above normal oil level. Open cover and you lose only a drip of oil. Only on reving gets oil in there.
There is no dedicated oil channel coming from the oil pump discharge, so the oil getting there is from splashing around. Reving it up splashes more, so more cooling, this is no suspect because it has been measured (coil temp readings have been made in real time while riding).

Since non OEM stators live significant longer than OEM, insufficient insulator material on OEM is most likely.
If there was only more oil stream to the stator housing, OEM's would probably have done pretty well.
Title: Re: What is the best replacement stator?
Post by: Taurus66 on 17 July, 2017, 06:00:36 PM
Thanks for decent reply rather than ... basically if you dont like it buy another bike!! Got to love these kind of asinine replies. I can cope fine with failures of componants,
However , i like to find a solution to the problem if possible.
Even the aftermarket part failed and relatively quickly too... so i think no matter how good the stator manfacturer is.. its going to fail prematurely.
Talking of a better oil supply, ive been thinking about this as i work with hydraulics i have the facilities and ability to add an extra oil supply.. and also having my own milling machine and lathe i think i can come up with some sort of oil supply. And making up the relavant hose work and fitting after market oil coolers is no problem as its my line of work.

Title: Re: What is the best replacement stator?
Post by: Robo on 17 July, 2017, 06:33:54 PM
Why don't you just enjoy the ride of the bike.

The last Honda Stator under warrenty lasted me 50k ! ...how long. if ever will that take you. :465:

Aftermarket ones are better and rarely fail.



Title: Re: What is the best replacement stator?
Post by: richardcbf on 17 July, 2017, 06:59:17 PM
*Originally Posted by Taurus66 [+]
Im surprised some enterprising fellow has not come up with an additional oil cooler to feed colled oil directly into the stator case and spraying the stator with said cooled oil..

Ive been thinking about this myself , cant be to hard to make a sandwich plate and take the oil from its original cooler , to a 14 row external cooler with the return fed into the stator case..

Hmm me thinks a project is coming on..
Here you go....
Re: Stator Heat Sink
« Reply #8 on: 07 September, 2011, 06:49:25 PM »

https://www.cbf1000.com/index.php/topic,11705.msg148275.html#msg148275
Title: Re: What is the best replacement stator?
Post by: J-man on 17 July, 2017, 08:46:39 PM
I made a lot of IR-gun readings too on the stator cover but that is not telling much, in the case of the biffer that is, because the contact area between stator and stator-cover is really small.
Maybe there are bike brands that do things differently like making that contact area max so the cover can actually be a cooling factor. Not so for the biffer where all your readings of the stator cover are mostly from the oil hitting it. Biffer stator cover is in no way representing coil temperatures.

That said, if you make the cover a huuuge cooling fin, the cover will be cooler yeah but that small contact area is not going to cool your stator very much I'm afraid.
Title: Re: What is the best replacement stator?
Post by: Taurus66 on 17 July, 2017, 08:47:07 PM
*Originally Posted by Robo [+]
Why don't you just enjoy the ride of the bike.

The last Honda Stator under warrenty lasted me 50k ! ...how long. if ever will that take you. :465:

Aftermarket ones are better and rarely fail.


Ummmm , newsflash... here.. i actually do enjoy the ride... and im so pleased for you that your stator has lasted you 50k.. and ill beg to differ on the fact that aftermarket ones last longer.. if you bothered to read .. you see the electrex one only lasted a few thousand less than my last one..

But thank you for your replies.. but they dont really help anything.. i do so appreciate your the cbf god.. but ...
Title: Re: What is the best replacement stator?
Post by: Robo on 17 July, 2017, 09:46:42 PM
one of my 8 stators lasted more than 50k. one didn't het the bike of the service ramp.

If you read what this forum is mainly made up of, you may understand Stators and all the q +a's

Some people waste time worrying about breakdowns and stators.

"Ummmm , newsflash... here.. i actually do enjoy the ride.."  :062: good

No reply can help some people  and I can't help you with a stator problem.it lays behind the cover :087:

Perhaps if you read the 1000's of threads about Stators you may understand more



Thanks for the God status ,  but  :084: :420: :481: :192:

Title: Re: What is the best replacement stator?
Post by: kurt on 18 July, 2017, 03:25:52 AM
I recently bought one from eBay-US for $78 US,, plus shipping, on sale.
Title: Re: What is the best replacement stator?
Post by: Bifferman on 18 July, 2017, 08:01:35 AM
*Originally Posted by kurt [+]
I recently bought one from eBay-US for $78 US,, plus shipping, on sale.

Hi Kurt, how are you mate ?  Good to read that you are still around.   I paid about the same (£50) for my spare stator.  Brand new, unused Honda unit and still in its wrapping :015:.

FWIW, for all newer members, Kurt is the guy who originally and mysteriously magicked up the MKI Service Manual which has been a life saver for so many members on here.   All :020: to Kurt :008:.

 :031:

Andy
 :149:
Title: Re: What is the best replacement stator?
Post by: SaturnV on 18 July, 2017, 08:20:49 AM
 :460:
That's interesting to know, Andy!
Like you say, a lot of guys here (myself included)  owe Kurt a massive debt of gratitude then  :028:
Title: Re: What is the best replacement stator?
Post by: Robo on 18 July, 2017, 10:10:38 AM
*Originally Posted by SaturnV [+]
:460:
That's interesting to know, Andy!
Like you say, a lot of guys here (myself included)  owe Kurt a massive debt of gratitude then  :028:

Yep you'd be buggered without those nice pictures :047:
Title: Re: What is the best replacement stator?
Post by: SaturnV on 18 July, 2017, 07:26:50 PM
*Originally Posted by Robo [+]
Yep you'd be buggered without those nice pictures :047:

 True but if I only wanted pretty pics I'd read my Haynes manual but tbh I have more faith in the Honda one  :mfrlol:
Title: Re: What is the best replacement stator?
Post by: Robo on 19 July, 2017, 10:51:59 AM
Wait til your Stator fails  :151: All doom and gloom. massive job to take on :138:

Somewhere on here there are a few pages about it.

You may have to use the search button or ask richard to put up a link.

All very hard to find.

Glad I've got a Suzuki

Good luck :028:
Title: Re: What is the best replacement stator?
Post by: Bifferman on 19 July, 2017, 11:21:07 AM
*Originally Posted by Robo [+]
Wait til your Stator fails  :151: All doom and gloom. massive job to take on :138:

Somewhere on here there are a few pages about it.

You may have to use the search button or ask richard to put up a link.

All very hard to find.

Glad I've got a Suzuki   :160: :104: :008: :008:

Good luck :028:
Title: Re: What is the best replacement stator?
Post by: shumba on 19 July, 2017, 01:19:14 PM
*Originally Posted by Robo [+]
Wait til your Stator fails  :151: All doom and gloom. massive job to take on :138:

Somewhere on here there are a few pages about it.

You may have to use the search button or ask richard to put up a link.

All very hard to find.

Glad I've got a Suzuki  ,That comes with go electrics that work properly ,and with a better gearbox as well.

Good luck :028:
Title: Re: What is the best replacement stator?
Post by: Jumbo on 21 July, 2017, 09:25:22 PM
Hi there, all ye merry Biffer riders. It's been a while. I've been busy being retired and such jolly stuff.
What brings me back here today is my own sorry tale of a fried Biffer stator....... without chips!

Last week I was returning from a 300 mile flit. When 20 miles from home my Gammatronix battery monitor
suddenly went into the orange zone. Within minutes it was showing red. Occasionally the red flashed or orange showed.  But, worryingly, green was now a colour consigned to history.

"This is not good", thought I.
And yet, there was no other indication of any malfunction showing on my instrument panel. 

So, at last, it looked like the infamous Honda stator saga had come to visit me...... up close and real personal, like!
Anyway, I nursed my baby home, avoiding using indicators, and braking as little as possible, in the hope that the battery's last few amp.hours might just make it.

I arrived home safely and left the engine running (somewhat erratically!) while I got a multimeter onto the battery's external charging socket.
There were all of 8.5 volts left. And yet the engine managed to keep its little heart beating. Oh, and the headlamp was still on, but very yellowish dull by now.
When I was about to ride into my workshop, I stuck her into first gear......... and all went Silent... Nada.... Not a sound.... Totalmente hush.... A quietude beyond quietness!
...Except for the sound of me exhaling a deep sigh of relief at having made it home, that is.

By the way, my bike has only 23,000 miserable miles on it since new in 2009..... Hardly run in really! LOL..

Next morning, I did all the usual diagnostics and quickly found the stator was indeed shagged, and all shorted to ground with the three coils gone open circuit in sympathetic empathy!

So, the question here; What's the best replacement stator?
I have no clue. I went on-line and now have a new stator installed. I ordered it from Brooksbarn.co.uk
It arrived withing 4 days. It turns out to be a stator made in Canada by RMSATOR.com
They say they give a 1 year warranty.

The stator works. I'm getting 14.7 volts at the battery. However, it did come with a too short cable.
Fortunately, the box included a female connector for the regulator end (if needed in case of fried connector, they say. Mine was fine)
So, I was able to lengthen the cable by making up an extension lead using this redundant female connector and a length of cable from the old stator.
All very enjoyable for an old mechanical head like me, but not exactly a swap out job. You'll need to solder!

I enjoyed playing bike fixer again. I'll be monitoring that very useful Gammatronix closely for a while.
I'm really glad I fitted it about 6 years ago.
What would it be like to not know your battery is discharging as you fly down a motorway, overtaking all in sight,
only to suddenly have your engine hesitate and die under you in the fast lane at 70+ MPH ???

""This is not good", might be your first thought......... or your last!
 :031:
Title: Re: What is the best replacement stator?
Post by: SaturnV on 21 July, 2017, 09:42:05 PM
Amen to the wisdom of a battery voltage monitor  :mfrlol:
Glad u got home safe & sound mate  :028:
How's the battery now, did it survive the ordeal?
Title: Re: What is the best replacement stator?
Post by: Jumbo on 21 July, 2017, 10:02:12 PM
Hi, SaturnV. The battery survived the abuse. It charged up quickly, and starting the engine now seems quicker than before.
Just instant!
Maybe the new stator has more OOMPH in it than the original. The coils and wiring look neater than the Honda OEM.

Or... maybe it's my imagination and exuberance at getting to fix a broken bike again after all these years of abstinence    :300:

Title: Re: What is the best replacement stator?
Post by: SaturnV on 21 July, 2017, 10:07:37 PM
 :062:

The proof of the pudding will be whether your battery holds its charge but hopefully ok  :001:

Title: Re: What is the best replacement stator?
Post by: Jumbo on 21 July, 2017, 10:17:59 PM
Anyway, running a battery down to 8.5 volts should hardly kill it.
However, it is 8 years old, and despite my low mileage, batteries can have a habit of giving up with time alone.
That said, I once ran a car for 13 years on the same battery. But I doubt they make 'em like that anymore.
After all, money has to be made!

Yes, I'm a cynic  :164:
Title: Re: What is the best replacement stator?
Post by: richardcbf on 22 July, 2017, 05:53:24 AM
*Originally Posted by Jumbo [+]
...So, the question here; What's the best replacement stator?
I have no clue. I went on-line and now have a new stator installed. I ordered it from Brooksbarn.co.uk
It arrived withing 4 days. It turns out to be a stator made in Canada by RMSATOR.com
They say they give a 1 year warranty.

The stator works. I'm getting 14.7 volts at the battery. However, it did come with a too short cable.
Fortunately, the box included a female connector for the regulator end (if needed in case of fried connector, they say. Mine was fine)
So, I was able to lengthen the cable by making up an extension lead using this redundant female connector and a length of cable from the old stator.
All very enjoyable for an old mechanical head like me, but not exactly a swap out job. You'll need to solder!

I enjoyed playing bike fixer again. I'll be monitoring that very useful Gammatronix closely for a while.
I'm really glad I fitted it about 6 years ago.
What would it be like to not know your battery is discharging as you fly down a motorway, overtaking all in sight,
only to suddenly have your engine hesitate and die under you in the fast lane at 70+ MPH ???

""This is not good", might be your first thought......... or your last!
 :031:
For others who neither want or have the ability to make an extension of the Stator output lead (cable)....
Some manufacturers of Stators have recognised that a 'longer' lead is necessary for the CBF1000 (the same Stator is made and sold for fitment to other bikes for which a shorter lead is fine) and advertise them as such.
i.e., A DIY extension with Soldering (of the new lead with its pre-fitted connector) with those ones should not be needed.
A search (e.g., Google) for cbf1000 stator longer lead 700mm should find them.

 :028:
Title: Re: What is the best replacement stator?
Post by: SaturnV on 22 July, 2017, 09:14:07 AM
*Originally Posted by Jumbo [+]
Anyway, running a battery down to 8.5 volts should hardly kill it.
True but lead acid cells prefer to be kept topped up all the time

However, it is 8 years old, and despite my low mileage, batteries can have a habit of giving up with time alone.
That said, I once ran a car for 13 years on the same battery. But I doubt they make 'em like that anymore.
My Toyota went for 10 years on the original battery, only replaced it last year! Calcium technology
After all, money has to be made!

Yes, I'm a cynic  :164:
Me too , but a cynic is just what an idealist calls a realist...
Title: Re: What is the best replacement stator?
Post by: Jumbo on 22 July, 2017, 10:50:48 AM
*Originally Posted by richardcbf [+]
....  A DIY extension with Soldering (of the new lead with its pre-fitted connector) with those ones should not be needed.

 :028:
Just to clarify; I didn't need to solder the new lead. They supplied a spare female socket connector. So all I had to do was make up an extension lead and fit that between the new stator's short lead and the voltage regulator connector.
The important point here is that the new stator's warranty has not been sacrificed by my modification.  :046:
Title: Re: What is the best replacement stator?
Post by: hondacbf on 22 July, 2017, 11:09:47 AM
Mmmm...so for anyone carrying a spare non original stator, it would be wise to make sure the cable length to the regulator is adequate., otherwise it may not be a straight forward roadside repair !.
What is the correct length of cable? .
Title: Re: What is the best replacement stator?
Post by: Robo on 22 July, 2017, 11:48:18 AM
For a road side repair

If the wires are to short, cut the conector off the new stator and fit stator on bike.

cut the lead off the old stator.

Plug the old cut off lead into the bikes loom and then join the old lead  to new stator wires using a choc block.

Job done in no time at all. :490:
Title: Re: What is the best replacement stator?
Post by: J-man on 22 July, 2017, 01:57:48 PM
If you switch 2 of the 3 wires accidentally, they're all same color, the the battery will be charged backwards, you will not notice, but stopping and then first time starting engine again it will run in the opposite direction, so far you will not notice, but then you engage 1st gair and depart the bike will run back wards  :138:
:186: I guess I draank too much  :430:
Title: Re: What is the best replacement stator?
Post by: SaturnV on 22 July, 2017, 03:47:55 PM
*Originally Posted by J-man [+]
If you switch 2 of the 3 wires accidentally, they're all same color, the the battery will be charged backwards, you will not notice, but stopping and then first time starting engine again it will run in the opposite direction, so far you will not notice, but then you engage 1st gair and depart the bike will run back wards  :138:
:186: I guess I draank too much  :430:
  :mfrlol: You must start drinking early in the day over there Jurgen, or is it a due to a combination of the time difference and the fact it's the weekend?  :031:
Title: Re: What is the best replacement stator?
Post by: Jumbo on 22 July, 2017, 07:08:18 PM
*Originally Posted by J-man [+]
If you switch 2 of the 3 wires accidentally, they're all same color, the the battery will be charged backwards, you will not notice, but stopping and then first time starting engine again it will run in the opposite direction, so far you will not notice, but then you engage 1st gair and depart the bike will run back wards  :138:
:186: I guess I draank too much  :430:
But, of course, all the other gears, apart from first, wont notice any change in charging direction and will drive the bike forwards as normal  :087:
Just avoid first gear in future and Bob will be your uncle...... Hic! hic! hic! or was it your aunt?

Actually, with this alternator, 65 volts AC (ish) comes off the combined 3 wires (65/3 = 21v from each wire), so no bother which wire goes were into the input side of the regulator, which puts out only DC.
I trust you are now totally flumoxed  :157: 
Title: Re: What is the best replacement stator?
Post by: hondacbf on 22 July, 2017, 07:45:18 PM
*Originally Posted by Jumbo [+]
But, of course, all the other gears, apart from first, wont notice any change in charging direction and will drive the bike forwards as normal  :087:
Just avoid first gear in future and Bob will be your uncle...... Hic! hic! hic! or was it your aunt?

Actually, with this alternator, 65 volts AC (ish) comes off the combined 3 wires (65/3 = 21v from each wire), so no bother which wire goes were into the input side of the regulator, which puts out only DC.
I trust you are now totally flumoxed  :157: 

Thats it  :087: I'm goin on the whisky now .
Title: Re: What is the best replacement stator?
Post by: ivor hugh jarse on 23 July, 2017, 07:04:55 PM
I have a Mk1 2008 13,000 miles with original stator and on today's ride the bike was lacking at low revs when cold for the first  couple miles (kind of bogging down as though the oil was treacle). On higher revs everything was perfect but it was lacking sparkle lower down the revs while cold. It did appear to clear when warm but I did wonder if these are symptoms of a dodgy stator?   
Title: Re: What is the best replacement stator?
Post by: Robo on 23 July, 2017, 07:06:06 PM
Hope so . :062:

You may join the club :010:
Title: Re: What is the best replacement stator?
Post by: SaturnV on 23 July, 2017, 09:31:42 PM
*Originally Posted by ivor hugh jarse [+]
I have a Mk1 2008 13,000 miles with original stator and on today's ride the bike was lacking at low revs when cold for the first  couple miles (kind of bogging down as though the oil was treacle). On higher revs everything was perfect but it was lacking sparkle lower down the revs while cold. It did appear to clear when warm but I did wonder if these are symptoms of a dodgy stator?

Have you done the voltage & resistance checks yet?
Title: Re: What is the best replacement stator?
Post by: Robo on 24 July, 2017, 08:50:32 AM
*Originally Posted by SaturnV [+]
Have you done the voltage & resistance checks yet?
   

Forget that . Just joint the Rac

 :720:
Title: Re: What is the best replacement stator?
Post by: ivor hugh jarse on 24 July, 2017, 10:30:22 AM
I'm changing it anyway, this was the push that I needed - Why wait for the inevitable spoiled day.. is there a You Tube video?
Title: Re: What is the best replacement stator?
Post by: richardcbf on 24 July, 2017, 05:49:36 PM
*Originally Posted by ivor hugh jarse [+]
I'm changing it anyway, this was the push that I needed - Why wait for the inevitable spoiled day.. is there a You Tube video?
Ja hier ist es,....
Title: Re: What is the best replacement stator?
Post by: ivor hugh jarse on 25 July, 2017, 09:26:28 AM
Thank you its fully explained whats required - is there a gasket to use or is it just red gasket cement?
Title: Re: What is the best replacement stator?
Post by: Bifferman on 25 July, 2017, 09:40:53 AM
*Originally Posted by ivor hugh jarse [+]
Thank you its fully explained whats required - is there a gasket to use or is it just red gasket cement?

Red ?  They do red now :187: - oh Red Hematite (probably work but... ) :164:.  Naw, go for the BLACK RTV, looks like the original.  Honda's own variant may have a 'special' ingredient and considering the price it should be called platinum, however the normal run of he mill RTV from any motor factors or even Halfords will be absolutely fine.  I keep a tube of Locktite MR5922 on my shelf just in case my stator ever fails and I have to fit my spare.  It cost me £5.99 from Halfords - compare that to Honka's rip off price :164:.

Just remember, cleanliness is the key to success as with all matters engineering.

Andy
 :149:
Title: Re: What is the best replacement stator?
Post by: ivor hugh jarse on 25 July, 2017, 12:19:01 PM
I'm putting aside a day because I have fairing lowers and I'm doing oil and filter and plugs while its off then bringing the bike back to mint - anything else I can do before the reassembly of the fairing lowers I will use ACF 50 protection on the hidden parts?
Title: Re: What is the best replacement stator?
Post by: Westbury71 on 25 July, 2017, 12:48:25 PM
*Originally Posted by ivor hugh jarse [+]
I'm changing it anyway, this was the push that I needed - Why wait for the inevitable spoiled day..

You may very well be right. Something I've considered for my 06 bike with 19k.

I noticed that the oil has gone black quite quickly post change. Could that be a hint of burnt stator coils perhaps?

I'll have a watch of the kindly posted video.
Title: Re: What is the best replacement stator?
Post by: richardcbf on 25 July, 2017, 06:33:21 PM
*Originally Posted by ivor hugh jarse [+]
I'm putting aside a day because I have fairing lowers and I'm doing oil and filter and plugs while its off then bringing the bike back to mint - anything else I can do before the reassembly of the fairing lowers I will use ACF 50 protection on the hidden parts?
Honda CBF1000 GT Oil Change (with removal of right side fairing lower)

 :028:
Title: Re: What is the best replacement stator?
Post by: Westbury71 on 26 July, 2017, 09:23:32 AM
*Originally Posted by richardcbf [+]
Ja hier ist es,....

 :460: I have viewed the excellent video and have some questions which I know that those of you that have changed your stator will know the answer to!

1) 5 min 36 - Is that the amount of oil that will come out, or has he already drained the sump?
2) 9 min 08 - Is he using WD40 on a rag to clean the engine mating surface?
3) 13 min 17 - Appears to be using a Dremel type device, is this needed? How hard is the gasket residue to remove?
4) 17 min 47 Is that enough liquid gasket and is it in the right place? Also, I note that none is used on the engine mating surface?

 :031: in advance for your help.
Title: Re: What is the best replacement stator?
Post by: ivor hugh jarse on 26 July, 2017, 01:50:50 PM
*Originally Posted by richardcbf [+]
Honda CBF1000 GT Oil Change (with removal of right side fairing lower)

 :028:

Very helpful (he works more cluttered and impulsive than I do) but it looks a trouble free exercise 
Title: Re: What is the best replacement stator?
Post by: J-man on 26 July, 2017, 05:46:46 PM
*Originally Posted by Westbury71 [+]
:460: I have viewed the excellent video and have some questions which I know that those of you that have changed your stator will know the answer to!

1) 5 min 36 - Is that the amount of oil that will come out, or has he already drained the sump?
2) 9 min 08 - Is he using WD40 on a rag to clean the engine mating surface?
3) 13 min 17 - Appears to be using a Dremel type device, is this needed? How hard is the gasket residue to remove?
4) 17 min 47 Is that enough liquid gasket and is it in the right place? Also, I note that none is used on the engine mating surface?

 :031: in advance for your help.
1) No need to drain the sump, just a few drops come out;
3) use whatever you have just dont take metal away, normally the gasket residu is not hardened out and still rubbery;
 :158:
Title: Re: What is the best replacement stator?
Post by: Bifferman on 26 July, 2017, 06:05:42 PM
*Originally Posted by richardcbf [+]
Honda CBF1000 GT Oil Change (with removal of right side fairing lower)

 :028:

Job done ?  Fairing on, no oil level level check - can you see the sight glass with the lower fairing on ? I don't know cos I don't have a lower fairing :027:.

Is this Rich's vid or one he has found on oootube :187:

Andy
 :149:

p.s.  Have to say though in 48 years of oil changes on cars and bikes this is the first time I have seen anyone use a pair of torque wrenches to tighten a sump plug and oil filter :164:.
Title: Re: What is the best replacement stator?
Post by: richardcbf on 26 July, 2017, 06:10:06 PM
*Originally Posted by Bifferman [+]
Job done ?  Fairing on, no oil level level check - can you see the sight glass with the lower fairing on ? I don't know cos I don't have a lower fairing :027:.

Is this Rich's vid or one he has found on oootube :187:

Andy
 :149:

Not this Rich. https://www.youtube.com/results?sp=CANQFA%253D%253D&q=Honda+CBF1000+GT+Oil+Change
  :123:
Title: Re: What is the best replacement stator?
Post by: Westbury71 on 27 July, 2017, 09:49:04 AM
*Originally Posted by J-man [+]
1) No need to drain the sump, just a few drops come out;
3) use whatever you have just dont take metal away, normally the gasket residu is not hardened out and still rubbery;
 :158:

Thanks JMan for the response.  :031: Good to know re small amount of oil, at least I know what to expect.

As I've not used any before, I've purchased some RTV instant gasket to have a play with and get the feel of. Doesnt sound too tricky to remove by all accounts.

The last point from my prior post:

4) 17 min 47 Is that enough liquid gasket and is it in the right place? Also, I note that none is used on the engine mating surface?

Any thoughts? It clearly worked for Mr Youtuber, but doesnt look like enough liquid IMO.



Title: Re: What is the best replacement stator?
Post by: shumba on 27 July, 2017, 10:58:22 AM
*Originally Posted by Westbury71 [+]
Thanks JMan for the response.  :031: Good to know re small amount of oil, at least I know what to expect.

As I've not used any before, I've purchased some RTV instant gasket to have a play with and get the feel of. Doesnt sound too tricky to remove by all accounts.

The last point from my prior post:

4) 17 min 47 Is that enough liquid gasket and is it in the right place? Also, I note that none is used on the engine mating surface?

Any thoughts? It clearly worked for Mr Youtuber, but doesnt look like enough liquid IMO.


There is more than enough sealant being used ,and it should only be applied to one mating surface. I have worked on vehicles where serious engine damage has been done by owners and sealant , I remember a Ford Pinto engine where the owner had used to much sealant on the camshaft cover , the sealant had found its way into the oil passages blocking off the oil supply and wrecking the engine as far as I can remember the vehicle was scrapped because of cost.
Title: Re: What is the best replacement stator?
Post by: Robo on 27 July, 2017, 03:45:02 PM
 :mfrlol: :129: :129:
Title: Re: What is the best replacement stator?
Post by: Westbury71 on 27 July, 2017, 07:06:17 PM
Thanks for your advice Shumba.  :031: I will use the video as a point of reference for quantity as its my first time with liquid gasket. Certainly don't want to do any damage.  The rest of the job certainly looks easy enough and I have read its as simple as changing a light bulb. Time will no doubt tell!
Title: Re: What is the best replacement stator?
Post by: Hondaxr on 27 August, 2017, 05:05:38 AM
 :490: Hi I am new to the forum I just bought a 2008 CBF1000 in Australia and it doesnt want to rev over 6000rpm while riding in neutral it revs all the way and the battery isnt charging much . I bought it yesterday happy with the bike. I was wondering if I should get a U S or Europe spec aftermarket stator thanks in advance
Title: Re: What is the best replacement stator?
Post by: Hondaxr on 27 August, 2017, 11:46:45 AM
I found the battery is getting charged the positive battery terminal was loose. It starts easily now will test ride to see if it revs over 6000 rpm
Title: Re: What is the best replacement stator?
Post by: J-man on 27 August, 2017, 12:52:33 PM
Fingers crossed Hondaxr  :028:
Title: Re: What is the best replacement stator?
Post by: Hondaxr on 30 August, 2017, 07:57:33 AM
the bike goes back to the dealer this Saturday they will fix it for me no charge and are giving me a loan bike
Title: Re: What is the best replacement stator?
Post by: J-man on 30 August, 2017, 09:14:40 AM
Sounds like good service. The loose positive is more complex than simply fastening a crew then?
Title: Re: What is the best replacement stator?
Post by: Hondaxr on 01 September, 2017, 08:59:16 AM
it has a Motobatt battery and it has a bracket that bolts to the positive on the battery then the lead bolts to this, the bracket was loose . The shop gave me an FZ6 Yamaha to ride home
Title: Re: What is the best replacement stator?
Post by: J-man on 01 September, 2017, 11:04:48 PM
Thanks for the heads up. That must have been a different ride experience on the FZ6  :300:
Title: Re: What is the best replacement stator?
Post by: Hondaxr on 04 September, 2017, 09:08:27 AM
The CBF is fixed it was a clogged fuel pump filter sock it runs really well now. I rode 4 different bikes in 2 days, the CBF , FZ-6, Vstrom 650 , KTM 1090R Adventure bike, interestingly each bike has its own strong points so they are all enjoyable to ride
Title: Re: What is the best replacement stator?
Post by: Boris on 06 August, 2018, 02:19:05 PM
*Originally Posted by Jumbo [+]
Next morning, I did all the usual diagnostics and quickly found the stator was indeed shagged, and all shorted to ground with the three coils gone open circuit in sympathetic empathy!


I know it's been a while but could you expand on that? How to definitely diagnose a failed stator? (yes, mine most likely failed yesterday).
Title: Re: What is the best replacement stator?
Post by: Jumbo on 06 August, 2018, 07:43:42 PM
Oops! bad luck, Boris.
Yes, it's been a while, but not so long a while as you might imagine. My stator failed again within 1000 miles.
I think the mistake I made was in not replacing the R/R at the same time as the stator.

I now have new genuine Honda branded stator and R/R installed. I have'n done many miles yet, so don't know how this will pan out.
I ordered my parts from nutjob.ie in Dublin. Very fast delivery and the best price I could find online for genuine Honda parts.

How to check your stator;
You can do this without removing the stator.
Disconnect the 3P connector, the one with the 3 yellow wires coming off the stator.
Measure the resistance across each pin in pairs.
In other word, measure across 1st to 2nd pin, 1st to 3rd pin, and then 2nd to 3rd pin in turn.
You should read between 0.1 and 1.0 Ω on each.
A failed/burnt out coil may show infinite Ωs  / open circuit..... or all shorted together giving zero Ωs

Then check the resistance between each of the 3 pins and the bike earth/frame.
This should be infinite  Ωs.  As in no continuity.   i.e. an open circuit.
Typically, with a failing stator, you may find a short to ground from one or all of the three yellow wires.

I hope that makes sense.
Jumbo
Title: Re: What is the best replacement stator?
Post by: STrep on 07 August, 2018, 01:45:07 AM
The stator went on my wife's 2009 CBF last week. We were in the middle of a trip circumnavigating Lake Superior.

The Honda dealer in Thunder Bay ordered the OEM replacement from Toronto (charged us $927 CND for the install). Unfortunately we had no other timely cost effective options. I don't know if the OEM is better than aftermarket alternatives.

STrep
Title: Re: What is the best replacement stator?
Post by: jm2 on 07 August, 2018, 02:44:09 PM
Jumbo.  Was that the ramstor stator that failed you ?

STrep.  Going by the above, probably.
Title: Re: What is the best replacement stator?
Post by: Jumbo on 07 August, 2018, 04:18:57 PM
It was an RMSTATOR. But at this point I suspect that the R/R (the original from new) may have been a factor.
I had used 2 RMSTATORs on the same R/R. Both burned out in short periods.
The RMSTATORs have heavier cabling than Honda's. They look really durable too.

But given the long history about this issue, and the myriad of opinions good, bad and silly, I decided to replace both stator and R/R at the same time with Honda parts.

Still waiting to give the bike some long runs , though.
Jumbo
Title: Re: What is the best replacement stator?
Post by: Boris on 10 August, 2018, 05:22:45 PM
I've just replaced mine. As far as I know from service history, this is the second time it's happened to this bike. 34k miles on the clock, I've owned it for the last 12k.

Title: Re: What is the best replacement stator?
Post by: Jumbo on 10 August, 2018, 06:26:20 PM
I'd suggest replacing the R/R as well. It might save you money.... ..But no guarantee that it will.

One (of the many!) theories about why bike stators of ALL manufacturers burn out so often is that something goes  bad in the R/R.
A bad R/R  will probably cause any replacement stators to fry themselves in time.

Static testing of these R/Rs with a diode tester will often show no fault.
There is a limit to what we owners can test without more sophisticated electronic equipment.
Ideally dynamic testing under real world riding conditions.
I suspect there are some complex electronics involved in there besides the diodes.

Google any bike manufacturer you can think of. You will find they ALL have hits concerning stator burn outs.
This is not only a Honda issue.
I'm surprised that, as far as I know, no one has yet taken a legal case on health and safety grounds.

Suggestion; never ride a bike without a battery monitor. And cast an eye at the monitor regularly.
It might save your life. I believe it has saved mine twice already.

Maybe I should take up golf  :087:
But somehow I just can't picture my man shed workshop filled with golfing gear  :005:
Title: Re: What is the best replacement stator?
Post by: J-man on 10 August, 2018, 06:57:41 PM
Jumbo, I think we all accept a normal level of failure on any bike, car, whatever, but we're not talking about that anymore.
The MK1 failing stator statistics fall far and wide out of the normal and Honda acknowledged that (by extending to a 7 years warranty for it).
I think your generalizing attempt that it's all normal like with other bikes is somewhat misplaced in case of MK1-stator.







Title: Re: What is the best replacement stator?
Post by: davyayr on 17 August, 2018, 12:28:42 AM
Evening all

Interesting thread going back a while.

Think my stator has given up the ghost, going on my searching on here.

Replaced the battery about a month ago, as it wouldn't hold a charge, and all was well. Now its not getting charged and bike wont start after a few short runs. It's like its losing a bit every time and charge not getting replaced.

Tonight as I got home from work, she was running like a sick pig, like a chronic misfire, and cut out as I parked her up.

Going to do the checks, but assuming I'm right, what is the current best replacement stator.

I'm thinking of changing both the stator and the R/R together as a precaution.

Any help appreciated.   :183: :183:

Cheers 

CBF1000 FA 2011 Mk1
Title: Re: What is the best replacement stator?
Post by: Jumbo on 17 August, 2018, 12:54:25 PM
*Originally Posted by davyayr [+]
Evening all

Going to do the checks, but assuming I'm right, what is the current best replacement stator.

Cheers 
CBF1000 FA 2011 Mk1
Unfortunately, I think that it is impossible to answer this simple question conclusively.
When I was buying a replacement stator and R/R, I went for genuine Honda parts in the hope that by now Honda will have got a grip and improved the design of these vital organs.

Meanwhile, my bike is running beautifully right now.
And when this bike is good, oh boy is she a thing of life affirming fun to ride  :300:

Jumbo
Title: Re: What is the best replacement stator?
Post by: davyayr on 19 August, 2018, 08:50:36 PM
*Originally Posted by Jumbo [+]

How to check your stator;
You can do this without removing the stator.
Disconnect the 3P connector, the one with the 3 yellow wires coming off the stator.
Measure the resistance across each pin in pairs.
In other word, measure across 1st to 2nd pin, 1st to 3rd pin, and then 2nd to 3rd pin in turn.
You should read between 0.1 and 1.0 Ω on each.
A failed/burnt out coil may show infinite Ωs  / open circuit..... or all shorted together giving zero Ωs

Then check the resistance between each of the 3 pins and the bike earth/frame.
This should be infinite  Ωs.  As in no continuity.   i.e. an open circuit.
Typically, with a failing stator, you may find a short to ground from one or all of the three yellow wires.

Jumbo

Well using the above test procedure, I got a reading on the bit in red. Instead of zero, I got 0.1 - 0.2 Ωs on all the wires to earth. So I assume this means stator is gubbed.

She's going to dealers tomorrow for their confirmation, just to be sure, but I'm not hopeful..
Title: Re: What is the best replacement stator?
Post by: jm2 on 20 August, 2018, 01:19:13 PM
*Originally Posted by davyayr [+]
... CBF1000 FA 2011 Mk1
No, you've contradicted which bike you have. You can't own an FA mkI.

Either way (but you need to know what you have got when asking for help), as it is a 2011 you are on the edge of getting an extended warranty replacement - ask about that and see what Mr H say.  You may be fortunate.  If it is a mkI as about the modified flywheel.  Read up on this forum and go forewarned, find out what is what.

Short each to earth, yes - it is hard for run of the mill multimeters (and leads) to differentiate 0, 0.1Ω and 0.2Ω, so any phase winding, anywhere short to frame may look like that.  Note also, as the 3ph cable leaves the stator cover (earthed whilst bolted up) if damaged it may show those readings.
* You did check it unplugged ?

I'm guessing a mkI (cbf1000a), a fair few miles (7 yrs), as likely out of warranty extention.  So get them to quote a repair as (any) stator will be cheaper (but you need to do it yourself - and have no bike in the meantime).
Title: Re: What is the best replacement stator?
Post by: davyayr on 22 August, 2018, 01:26:33 PM
*Originally Posted by jm2 [+]
No, you've contradicted which bike you have. You can't own an FA mkI.

Either way (but you need to know what you have got when asking for help), as it is a 2011 you are on the edge of getting an extended warranty replacement - ask about that and see what Mr H say.  You may be fortunate.  If it is a mkI as about the modified flywheel.  Read up on this forum and go forewarned, find out what is what.

Is indeed a CBF 1000A, 29,938 miles, Full Service History etc etc

Dealer has checked the stator and is knackered.

https://photos.google.com/photo/AF1QipPiitzOfYScFnZrMzyw3kfHhTY9ssw6ABS9zlY0

I'm in communication with Honda to see if they will cover this given the bike has never had the stator replaced, or at least offer some sort of goodwill gesture.
Not hopeful, but we'll see how it goes..

Cheers all
Title: Re: What is the best replacement stator?
Post by: jm2 on 22 August, 2018, 09:35:28 PM
404 on google image but your attached photo is proof.

Worth asking and asking again for a freebie especially as you could do with the upgraded flywheel.





Oh for brain typos - of course my post should have read multi not milli meters.
Title: Re: What is the best replacement stator?
Post by: davyayr on 30 August, 2018, 09:22:38 PM
Wee update folks

After some emails back and forth with Honda Customer Services, they have agreed to replaced the stator and flywheel as per the extended warranty that they had in place.

They will pay for the parts (flywheel and stator) and I'll pay for the oil change and labour.

She's due an oil and filter change anyway so I'm happy with that.

Happy days  :001: :001: :001: :031: :046: :046: :031: :031:
Title: Re: What is the best replacement stator?
Post by: jm2 on 30 August, 2018, 10:00:20 PM
After a stator has gone pop big time you need an oil and filter change anyway - if if you've only just changed it.

Happy.  I say that is a result, and  a good one at that (always worth asking isn't it).
Cheer up and take your mrs/mistress/best mate/cat out for a drink !!
Later you'll realise ...
Title: Re: What is the best replacement stator?
Post by: davyayr on 30 August, 2018, 10:14:40 PM
Definitely a good result jm2, and you're correct. You don't ask, you don't get, as they say

Could not believe the price to replace flywheel and stator retail.

Best part of £1K....inc Labour and Oil change  :005: :005: :005: :005: :005:

Should have her back early next week, just in time for days off  :046:.......just need the weather now.. :016:
Title: Re: What is the best replacement stator?
Post by: wpbrown on 31 August, 2018, 10:41:22 AM
*Originally Posted by davyayr [+]
Wee update folks

After some emails back and forth with Honda Customer Services, they have agreed to replaced the stator and flywheel as per the extended warranty that they had in place.

They will pay for the parts (flywheel and stator) and I'll pay for the oil change and labour.

She's due an oil and filter change anyway so I'm happy with that.

Happy days  :001: :001: :001: :031: :046: :046: :031: :031:

Excuse my ignorance of the fact but was there a recall or anything on the stator and fixed under extended warranty? My bike is a 2012 mk1 with 8k miles. Reading past posts on here, I'm wondering is it inevitable that the stator will go at some stage?
Title: Re: What is the best replacement stator?
Post by: davyayr on 31 August, 2018, 12:16:09 PM
Not a recall but Honda will replace stator and flywheel on bikes up to 7 yrs old, but only if dealers confirm the failure.
I was lucky as my bike was 4 months over the 7 yrs but I got a goodwill gesture.
My symptoms started as me thinking battery was knackered as it was the original.
When stator failed it was after a couple of short runs to work and shops.
Charged battery just to get her to dealers. Wouldn’t start again when tech tried.
Quick diag and casing off confirmed it as in my pic.
Title: Re: What is the best replacement stator?
Post by: wpbrown on 31 August, 2018, 12:39:25 PM
Thanks for the heads up. I guess will just deal with it when or if it happens.