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I have a 929 I am experiencing some odd issues with. I am having trouble tracking down the problem. The battery seems to be draining while the bike is running. I know the alternator is doing its job because the bike never cuts off or loses power. But after riding or running for 30 min or so it wont start back up. I got a new battery because i thought the one i had was old but that isn't making a difference. If I pop the clutch it run just fine I just can't figure out where the hell the drain could be coming from. Anyone out there had a similiar problem??
 

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I have a 929 I am experiencing some odd issues with. I am having trouble tracking down the problem. The battery seems to be draining while the bike is running. I know the alternator is doing its job because the bike never cuts off or loses power. But after riding or running for 30 min or so it wont start back up. I got a new battery because i thought the one i had was old but that isn't making a difference. If I pop the clutch it run just fine I just can't figure out where the hell the drain could be coming from. Anyone out there had a similiar problem??
How do you know the alternator is working just because the engine runs for thirty minutes? It's just running off the battery. Check your voltage at the stator and across the battery terminals with the engine running, but my bet is bad stator.
 

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If it was running off battery it would still show power issues. And even when battery is dead you can pop the clutch and it always runs. Its even run for like 45 min after popping the clutch when the battery died. I was starting to think starter relay might be bad. Any other thoughts?
 

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If it was running off battery it would still show power issues. And even when battery is dead you can pop the clutch and it always runs. Its even run for like 45 min after popping the clutch when the battery died. I was starting to think starter relay might be bad. Any other thoughts?

It will run off the battery just fine, I don't have the charging system on my race bike at all, it doesn't need it as long as the battery is charged.
 

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Its the regulator/rectifier... this is like the most basic/common problems to check when this happens. Honda R/R's dont really last long til they die out. i would say 4-5 years max til it has to at least be swapped out for most people...

Most people are opposed to it but personally, I bought the cheap Hong Kong Regulators from ebay for like 26 bucks and its been on my 954 for almost 2 years no problem, had a hong kong one on my f2 for 3 years and it still worked when i sold it. OEM r/r will run you almost $150 tho. IMO, if it goes bad ill just buy another one for $26
 

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Its the regulator/rectifier... this is like the most basic/common problems to check when this happens. Honda R/R's dont really last long til they die out. i would say 4-5 years max til it has to at least be swapped out for most people...

Most people are opposed to it but personally, I bought the cheap Hong Kong Regulators from ebay for like 26 bucks and its been on my 954 for almost 2 years no problem, had a hong kong one on my f2 for 3 years and it still worked when i sold it. OEM r/r will run you almost $150 tho. IMO, if it goes bad ill just buy another one for $26

It's more likely to be the stator in my experience.
That's on the 929/954/1000RR/F4i.
On the 900RR and earlier 600's it tends to be the regulator
 

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Bladracer, you probably have more experience but if it was the stator, wouldn't it shut off mid ride and not when you turn the bike off and on? The stator keeps the energy from the engine flowing. Kind of like a car. A good battery will start the car but a bad alternator wont keep the car running.
 

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Bladracer, you probably have more experience but if it was the stator, wouldn't it shut off mid ride and not when you turn the bike off and on? The stator keeps the energy from the engine flowing. Kind of like a car. A good battery will start the car but a bad alternator wont keep the car running.


Nope, the main power draw is the starter motor followed by the fuel pump.
It'll run just fine down to around 10.8V before the electrics shut down, that's way too low to power the starter motor.
A good battery will both start the car and keep it running, the alternator has _nothing_ to do with starting or running the engine - it just charges the battery.
 

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Stator has 3 wires, probably one of the wire is broken and it charges battery very slowly, you need to change stator I would buy rebuild because it doesn't have any specific parts its just wire on the metal and new cable, this will fix your problem, there is nothing else involved in charging battery
 
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