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955i 2003 - not charging battery

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8.6K views 13 replies 4 participants last post by  DEcosse  
I
#1 ·
Hi All,
looking for some advice ... searched the forum and read Decosse excellent article on RR and Stator testing, upgrading and so on ..... my problem is my battery went flat .. jump started drove few hours, went flat again ... new battery.
Few hours drive ... flat again. OK so charged the battery and got out the multimeter, 12.6 no load, 12.1 headlights on. 12.1 engine idling....
Then disconnected Stator cable and metered 1.2 ohm between 1-2 and 1-3 and 1.1 between 2-3 .... seems ok
Then measured resistance from each of the 3 pins to ground (battery -ve), infinite (ie open circuit) ... also seems ok
Then measured output AC voltage from stator pins with engine idling .... 0v, (zero volts) on any combination of the 3 pins.... clearly no longer OK .... kinda strange tho with the other tests seemingly working .. or what do ye think ?
No signs of overheat or fried connectors or such....
Next step ?? pull the stator ??
All comments welcome....:confused::confused:
Andy
 
Discussion starter · #7 ·
Quote :Hopefully checked the most simple thing first and validated Fuse 11 is good!

Where's fuse 11 ? mine go from 1 to 10 !
I have checked again and still getting results as in original post ... definitely using AC Volt setting on multimeter, tried two different multimeters, one digital one analogue, both measure 230V on my household supply, neither measure anything (at all) on any combination of the 3 pins from the stator connector (with the engine running, of course) .... absolutely mystifying. See pic

thanks for all replies
 

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Discussion starter · #9 ·
Quick update.... pulled the stator, looked OK to me (not fried) but a man who knows these things re-sleeved the tails and I refitted the stator and Eureka, AC volts again.
No DC out of the RR tho .. so I've ordered one of the Polaris 105C Series RRs I've been reading about wth the Triumph link lead .. waiting for it to arrive will post an update when it does.
 
Discussion starter · #10 ·
RegRect arrived .. fitted .. battery charging again .. 13.68V at idle and constant up to 5000 rev. Next step is to fit a charging indicator LED to give me a warning if this ever happens again.

Thanks for the advice and help folks
 
Discussion starter · #11 ·
Update to date - RR fitted was described as Polaris 105, stamped with SH775 on the body of it ... I believe it to be a 'series' device. I took the bike for an hours run last week after half hour the battery stopped charging.....
When I got home I checked with my meter, no DC volts from RR, AC volts from Stator, varying 25 - 60V with engine revs.
Ordered new RR .... ? This one .... anyone know if it should work with my 03 955i tiger ??
What happens is .. AC in, as before, DC output between 13 - 15V with nothing connected to RR output, ie at the terminals. Once i connect it to the bike, the voltage across the battery (with the bike running) is around 11.88V and increases to maybe 12.2V if I rev to 3000 or so.
This doesn't seem too healthy to me ... I'm not sure i really understand whats going on .... any thought ????
Andy
 

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Discussion starter · #12 ·
One extra thing ... I connected a multimeter set to DC Amps in line with the RR output and was reading 6A at idle, increased to 7A with increase in revs. Doesn't seem a lot for a RR spec'd to 35A, is it that the stator isn't generating enough under the load of the RR and battery / bike being connected ??
 
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