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Offline Scootyman

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Price rises on Stator and Flywheel kits from Germany
« on: 19 January, 2019, 11:05:08 PM »
Hello All,

I believe this is my first post on this forum but one that might be useful to some.
I recently debated selling my CBF and maybe downsizing but on reflection I just canít and donít want to do it. The CBF does everything I want well which is mainly touring with luggage, sometimes two up around the U.K. I have ridden all over the Highlands on it without issue apart from a dodgy plug cap on number one cylinder which reared itís head going up and over the Belach na Ba last year. Despite this I still have concerns over the dodgy stators and when my turn will be to have a failure. It looks like mine has been changed despite only covering 14500 miles from new so I called the dealer where the bike was sold and serviced But no knowledge on whether an updated stator and flywheel was fitted on replacement.
I was at a crossroads. Do I spend £1000 on a set of tyres, brake linings, a chain and sprocket kit plus replace both the flywheel and stator for peace of mind or ditch it and run for another bike? I did a search on here and found a few links on flywheel kits sourced in Germany however, most have now raised their prices in line with U.K. dealers.
I managed to find one that quoted £410 for the kit plus a genuine flywheel locking tool so I decided to order and see what happens. My gut feeling is they may come back to me next week and tell me the price is wrong and should be £xxxx but fingers crossed they will honour the price and all is well.
If anyone else was considering doing the upgrade then the link is
https://www.kfm-motorraeder.de/cms/en/genuine-spare-parts/honda-spare-parts?itemid=06311MFA309
Hope that helps
Scoots
« Last Edit: 19 January, 2019, 11:06:01 PM by Scootyman »

Offline Leofric

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Re: Price rises on Stator and Flywheel kits from Germany
« Reply #1 on: 19 January, 2019, 11:54:10 PM »
Would the work you mention cost £1000 ? I have read about the stator on mk1's but why would you need to change the flywheel ?

Offline Scootyman

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Re: Price rises on Stator and Flywheel kits from Germany
« Reply #2 on: 20 January, 2019, 11:27:51 AM »
Because if you just change the stator you will end up back to square one when it fails again. I am not the most expert person on this but after some research it seems there is a problem with heat and how the oil moves around the engine near the stator. I believe it was fixed on the mark two but the mark one needs an updated flywheel and stator to cure the problem which for some was covered under warranty. Iím guessing Honda changed the flywheel in some way to cool the running of the stator. Maybe itís less magnetic or itís changed size, Iím not sure. There are some YouTube videos of a chap in Germany with a funny laugh doing this modification if it helps. Iím pretty sure this has been more than well covered on this forum before.
« Last Edit: 20 January, 2019, 11:29:21 AM by Scootyman »

Offline Leofric

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Re: Price rises on Stator and Flywheel kits from Germany
« Reply #3 on: 20 January, 2019, 09:01:43 PM »
I have a mk2 so I hope I don't have to do it , I just wondered why the flywheel was a problem.

Offline alan sh

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Re: Price rises on Stator and Flywheel kits from Germany
« Reply #4 on: 30 January, 2019, 06:07:56 PM »
Because the magnets are too strong
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Offline Leofric

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Re: Price rises on Stator and Flywheel kits from Germany
« Reply #5 on: 30 January, 2019, 11:59:49 PM »
what do over strong magnets do ? sorry had to ask.

Offline Scootyman

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Re: Price rises on Stator and Flywheel kits from Germany
« Reply #6 on: 03 February, 2019, 02:31:33 PM »
That confirmed my suspicions then about the magnetic field being too strong.

As an update, my flywheel and stator kit is now on its way at the price they originally quoted so all is well with the link I posted. Itís now actually reduced to Ä397 but Iím happy just to get one at a reasonable price. I cannot see any reason why I wonít be keeping this bike now for quite some time as it should be good for high miles being a Honda.
Unless the price comes down on the CB1100....... :020:

Offline J-man

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Re: Price rises on Stator and Flywheel kits from Germany
« Reply #7 on: 03 February, 2019, 03:08:54 PM »
*Originally Posted by Leofric [+]
what do over strong magnets do ? sorry had to ask.
Stronger magnets result in a higher produced electrical power output of the generator.
Since the voltage regulation (keeping the bike at 12 to 14 volts) uses a generator-short-circuiting principle, if more power is outputted then more short circuit is necessary, and more load is on the coils of the generator.
With lesser strong magnets there's lesser short-circuiting of the generator necessary, hence lesser current loads on the coils. But your generator as a result can also produce less power if needed, seems Honda made a trade off with the newer flywheels to have a lower magnetic field.

I am not 100% sure (please correct me if I'm wrong) but I suppose the new flywheel does not improve more oil flow toward the stator coils. Just having lesser magnetic power.

There are other types of voltage regulators that don't work on the short-circuiting principle at all, these are called series-regulators, and with those you can throw strong magnets on them as much as you like no problem, but these regulators are somewhat more complex (read expensive) and need good cooling. A bunch of people here ( #metoo  :008: ) made the transition toward a series regulator but they are non Honda genuine.
« Last Edit: 03 February, 2019, 03:14:09 PM by J-man »

Offline iNCORRIGIBLE

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Re: Price rises on Stator and Flywheel kits from Germany
« Reply #8 on: 03 February, 2019, 04:51:16 PM »
Many Thanks J Man for your view on this problem. Is it possible to know what background/job knowledge/specialism you draw upon to give us this helpful & very useful information please! Best Regards.Edward.Essex UK (CBF 2009)

Offline Scootyman

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Re: Price rises on Stator and Flywheel kits from Germany
« Reply #9 on: 03 February, 2019, 07:03:08 PM »
So with that information about series regulators, does that mean a series regulator would solve the stator problem on the mark one CBF or is it not that simple?