UK Buell Enthusiasts Group :: 1125R charging questions

Yeh I read that in the electrical diag manual. 0.8 isn't much though, not like it's k or M ohms implying a break. It's on the bike lift now, slowly being stripped down. Looks like new stator, Hildstrom rotor mod and source a series r/r are all in order.

Any recommendations for a UK source for a series r/r? I found this on eBay 265204529011.

Be very careful when checking resistance on any item to make sure you take into account any resistance of the actual test meter leads

you might find if you put the leads together that your meter will read 0.6 just through it's own leads

Hi folks
A weird thing happened while investigating above. While running on the drive, I had a puff of something, not sure it was smoke under the air box. It carried on running fine but I shut it off quick. It fired back up ok but getting a few wisps of smoke from same area. Doesn't smell electrical but a little disconcerting.

Cheers

You did of course set your meter to read AC volts didn't you ?

Have you identified what has caused the "smoke " :shock:

Does sound as if your stator is within spec, so should be ok .
that leaves a Wiring loom fault or R/R failure to cause no AC voltage

barney wrote:

Have you identified what has caused the "smoke " :shock:

Does sound as if your stator is within spec, so should be ok .
that leaves a Wiring loom fault or R/R failure to cause no AC voltage

Short answer is no. Cables down to stator are in good order and there isn't that classic electrical burning smell in the area. It was more like a hose popping off and dumping something on the hot motor. It was quite a hot day when it happened and I could hear the fuel starting to boil in the frame and it was pushing petrol through the vent hose.

I'm gonna put the stator back on and run it to see what happens. I need to sanity check my stator AC readings anyway.

Is there an easy way to identify whether you have the earlier or later rotor/stator set up? I read somewhere 08s were more likely to pop r/r and 09-10s burnt stators. My bike was assembled Dec 08, VIN indicates 09 model and it's on a 2010 reg plate!

The r/r in mine is the Ducati version if that helps identify.

barney wrote:

Have you identified what has caused the "smoke " :shock:

Does sound as if your stator is within spec, so should be ok .
that leaves a Wiring loom fault or R/R failure to cause no AC voltage

Author:	billbofagends [ 05 Sep 2021 17:49 ]
Post subject:	1125R charging questions
Hi folks I've done 80 mi on my 1125R since purchasing it Thurs this week. Unfortunately, I've been struck by charging issues already with a sys voltage too low on the display. I was well aware of the problems with 1125 models before buying and checked the battery was charging before purchasing - it was showing 13.8v at the battery. 80mi later not looking so good. Anyhow, I've followed the electrical manual and: 1. Each stator phase to earth = open circuit so all good 2. Phase to phase resistance = ~0.8 ohms so would have thought this was acceptable 3. Phase to phase voltage while running - around 1v, for each combination. Certainly not the 40+v AC it should be. A little confused. Resistance check implies stator windings ok but no voltage. Does that mean my rotor is screwed? Wouldn't that mean either it's not spinning or magnets have all fallen out? 🤔 No horrible mechanical noises to suggest that though. A weird thing happened while investigating above. While running on the drive, I had a puff of something, not sure it was smoke under the air box. It carried on running fine but I shut it off quick. It fired back up ok but getting a few wisps of smoke from same area. Doesn't smell electrical but a little disconcerting. Kinda hoping I could enjoy it for what bit of summer is left before having to get hands dirty. Clutch slave leaking too but ordered an Oberon replacement. Cheers

Author:	Nutah [ 05 Sep 2021 21:17 ]
Post subject:	Re: 1125R charging questions
smoking sounds fucking bad , electrical fires cause massive damage get your money back from the vendor asap ...or start stripping it down to find the source at a guess as you have a charging issue & smoking cabling suspect its going to the voltage regulator good luck which ever way you choose

Author:	billbofagends [ 06 Sep 2021 22:59 ]
Post subject:	Re: 1125R charging questions
It's not r/r smoking as that was disconnected at the time. Also, no AC voltage getting to it at the moment. Smoke was emanating from the top of rear cylinder. I've started to strip it down, no obvious melted cables as yet. Anyone have any suggestions re the stator and the readings I've got? Hopefully will get it out the bike for a closer inspection tomorrow.

Author:	barney [ 07 Sep 2021 06:01 ]
Post subject:	Re: 1125R charging questions
viewtopic.php?f=8&t=23309&hilit=1125+charging viewtopic.php?f=8&t=22920&hilit=1125+charging bit of info for you

Author:	Maz [ 07 Sep 2021 12:25 ]
Post subject:	Re: 1125R charging questions
Resistance across windings should be 0.1-0.3 max.

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1125R charging questions https://ukbeg.com/forum/viewtopic.php?f=8&t=24963	Page 1 of 2

Author:	billbofagends [ 07 Sep 2021 18:14 ]
Post subject:	Re: 1125R charging questions
Yeh I read that in the electrical diag manual. 0.8 isn't much though, not like it's k or M ohms implying a break. It's on the bike lift now, slowly being stripped down. Looks like new stator, Hildstrom rotor mod and source a series r/r are all in order. Any recommendations for a UK source for a series r/r? I found this on eBay 265204529011.

Author:	Nutah [ 07 Sep 2021 19:41 ]
Post subject:	Re: 1125R charging questions
viewtopic.php?f=17&t=146 give this a read it explains it good luck

Author:	kevmean [ 07 Sep 2021 20:24 ]
Post subject:	Re: 1125R charging questions
billbofagends wrote: Yeh I read that in the electrical diag manual. 0.8 isn't much though, not like it's k or M ohms implying a break. It's on the bike lift now, slowly being stripped down. Looks like new stator, Hildstrom rotor mod and source a series r/r are all in order. Any recommendations for a UK source for a series r/r? I found this on eBay 265204529011. Be very careful when checking resistance on any item to make sure you take into account any resistance of the actual test meter leads you might find if you put the leads together that your meter will read 0.6 just through it's own leads

Author:	billbofagends [ 07 Sep 2021 22:11 ]
Post subject:	Re: 1125R charging questions
kevmean wrote: Be very careful when checking resistance on any item to make sure you take into account any resistance of the actual test meter leads you might find if you put the leads together that your meter will read 0.6 just through it's own leads Good shout. For some reason I thought my multimeter read 0 ohms through the test leads but it reads 0.5. Given that, seems my stator windings are in spec on the resistance front. Shame I've already taken it out the bike What I don't understand is why no AC voltage with the engine running. Rotor is all intact and very magnetic. Unless I need to go back to multimeter school

Author:	Maz [ 08 Sep 2021 00:41 ]
Post subject:	Re: 1125R charging questions
You did of course set your meter to read AC volts didn't you ?

Author:	barney [ 08 Sep 2021 06:14 ]
Post subject:	Re: 1125R charging questions
billbofagends wrote: Hi folks A weird thing happened while investigating above. While running on the drive, I had a puff of something, not sure it was smoke under the air box. It carried on running fine but I shut it off quick. It fired back up ok but getting a few wisps of smoke from same area. Doesn't smell electrical but a little disconcerting. Cheers Have you identified what has caused the "smoke " Does sound as if your stator is within spec, so should be ok . that leaves a Wiring loom fault or R/R failure to cause no AC voltage

Author:	billbofagends [ 08 Sep 2021 08:25 ]
Post subject:	Re: 1125R charging questions
Maz wrote: You did of course set your meter to read AC volts didn't you ? Yep, I'm sure I did. For sake of my sanity I might wack it back on and retest.

Author:	billbofagends [ 08 Sep 2021 16:31 ]
Post subject:	Re: 1125R charging questions
barney wrote: Have you identified what has caused the "smoke " Does sound as if your stator is within spec, so should be ok . that leaves a Wiring loom fault or R/R failure to cause no AC voltage Short answer is no. Cables down to stator are in good order and there isn't that classic electrical burning smell in the area. It was more like a hose popping off and dumping something on the hot motor. It was quite a hot day when it happened and I could hear the fuel starting to boil in the frame and it was pushing petrol through the vent hose. I'm gonna put the stator back on and run it to see what happens. I need to sanity check my stator AC readings anyway. Is there an easy way to identify whether you have the earlier or later rotor/stator set up? I read somewhere 08s were more likely to pop r/r and 09-10s burnt stators. My bike was assembled Dec 08, VIN indicates 09 model and it's on a 2010 reg plate! The r/r in mine is the Ducati version if that helps identify.

Author:	Jazzbutcher [ 08 Sep 2021 17:26 ]
Post subject:	Re: 1125R charging questions
billbofagends wrote: barney wrote: Have you identified what has caused the "smoke " Does sound as if your stator is within spec, so should be ok . that leaves a Wiring loom fault or R/R failure to cause no AC voltage Short answer is no. Cables down to stator are in good order and there isn't that classic electrical burning smell in the area. It was more like a hose popping off and dumping something on the hot motor. It was quite a hot day when it happened and I could hear the fuel starting to boil in the frame and it was pushing petrol through the vent hose. I'm gonna put the stator back on and run it to see what happens. I need to sanity check my stator AC readings anyway. Is there an easy way to identify whether you have the earlier or later rotor/stator set up? I read somewhere 08s were more likely to pop r/r and 09-10s burnt stators. My bike was assembled Dec 08, VIN indicates 09 model and it's on a 2010 reg plate! The r/r in mine is the Ducati version if that helps identify. If you have the airbox bottom off check the engine breather, it just slots in about 2 inches from the rear & the little foam filter that's in the end can clog with oil & drip onto the engine. Just take the foam bit out & clean it. It's worth doing anyway even if it isn't that. Hope you get it sorted.

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Author:	kevmean [ 08 Sep 2021 19:27 ]
Post subject:	Re: 1125R charging questions
billbofagends wrote: barney wrote: Have you identified what has caused the "smoke " Does sound as if your stator is within spec, so should be ok . that leaves a Wiring loom fault or R/R failure to cause no AC voltage Short answer is no. Cables down to stator are in good order and there isn't that classic electrical burning smell in the area. It was more like a hose popping off and dumping something on the hot motor. It was quite a hot day when it happened and I could hear the fuel starting to boil in the frame and it was pushing petrol through the vent hose. I'm gonna put the stator back on and run it to see what happens. I need to sanity check my stator AC readings anyway. Is there an easy way to identify whether you have the earlier or later rotor/stator set up? I read somewhere 08s were more likely to pop r/r and 09-10s burnt stators. My bike was assembled Dec 08, VIN indicates 09 model and it's on a 2010 reg plate! The r/r in mine is the Ducati version if that helps identify. 08 will have a blue frame , 09 model will be black frame.