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Offline cbrog

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Non starter
« on: 15 August, 2019, 09:54:21 AM »
All kitted up for my marshalling duties at Croft circuit last week , and what happens , slow turn over  ! stuck it on Optimate for 2 days , test across battery 12.5 v , started up fine , tested with bike running 14v , no fancy electrical gadgets on bike , this is Mk 2 supposedly with  no stator etc problems .

Offline Westoneboy

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Re: Non starter
« Reply #1 on: 15 August, 2019, 02:59:09 PM »
Sounds like it might be your battery...

Offline Art

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Re: Non starter
« Reply #2 on: 15 August, 2019, 09:40:19 PM »
I'd suspect a faulty battery too but before writing the battery off with multimeter to hand and a fully charged battery with an initial voltage >12.5v test for

Standby current drain - For the MKII (SC64) that should be < 0.002A.
Cold Cranking Amps - Battery voltage should remain >9.5v while cranking the starter motor for 15 seconds.
Electrical load test - Expect >0.5v above the initial level of charge with all electrics turned on and engine revving to 1,500 revs.

Offline phild

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Re: Non starter
« Reply #3 on: 15 August, 2019, 09:47:52 PM »
Same symptoms as mine......battery was on its way out, replacement sorted it.

My MK2 as never been one for bursting into life.........it’s more of a whimper.  :001:


Offline cbrog

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Re: Non starter
« Reply #4 on: 16 August, 2019, 12:13:13 PM »
Thanks for the advice , I was thinking battery , went out and did a blast round 50 miles and seems ok. possibly too many short rides as used to do 30 mile commute to work most days .
Bike is just under 5 years old and only done 15k , will use optimate for a while and see how it goes when colder weather starts .

Offline jm2

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Re: Non starter
« Reply #5 on: 16 August, 2019, 10:28:50 PM »
Did you change that battery two years ago or not ?
If not, it is your battery.

I think it is time you got a known good multimeter accross it and put that 'S' niggle to bed check out the charging system.
Only do it right - no bodging please.   Keeper of the failed stator list.   John.

Offline cbrog

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Re: Non starter
« Reply #6 on: 17 August, 2019, 10:18:52 AM »
*Originally Posted by jm2 [+]
Did you change that battery two years ago or not ?
If not, it is your battery.

I think it is time you got a known good multimeter accross it and put that 'S' niggle to bed check out the charging system.
Never changed battery , I have had the bike since April 2018 with no problems . voltmeter 12v stationary 14.5 when running . Going on holiday soon will check when I get back

Offline Art

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Re: Non starter
« Reply #7 on: 17 August, 2019, 05:56:13 PM »
Add a little standby current drain to 12v at rest and its no wonder it doesn't want to come out and play, 12v is virtually flat. That battery needs to be fully charged to >12.5v and tested for Standby current drain, Cold Cranking Amps and load tested to confirm its nothing more sinister before shelling out on hard earned for a new battery.

Offline jm2

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Re: Non starter
« Reply #8 on: 18 August, 2019, 02:46:34 PM »
*Originally Posted by cbrog [+]
Never changed battery , I have had the bike since April 2018 with no problems . voltmeter 12v stationary 14.5 when running . Going on holiday soon will check when I get back
Oh. Different bike (or mixed up users/bike this end) ? :005:

Anyway, check out the charging and any drain whilst switched off will point you in the right direction.
- a 5-year old battery isn't any youngster.
Only do it right - no bodging please.   Keeper of the failed stator list.   John.

 


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