2008 RSV Factory unsteady idle

BrianRSA · Jan 17, 2019

The bike has had a consistant idle and was a pleasure at stop lights. yesterday the idle falters after a while and then the engine cuts. I have checked for faults on diagnostic and all is clear. I find not leaks on the vacuum piping and bike starts well. The battery charges at 12,5V.
the bike drives great in motion and throttle response is good.

I just need to figure out the reason for this change in idle.

Will check the stator output and voltage regulator tonight.

any advice will be appreciated to help save me effort and time.

Thanks

Duggers · Mar 18, 2019

Hi Brian,

The battery charging at that voltage is a problem. You'll get problems with idle and cutting out. Something is away with the charging circuit, be it stator, rectifier or battery. Stator is a known issue with Gen 2 and there are loads of posts about it. You should have approx 60v AC at 4k rpm on all 3 phases or the stator is toast. Fitting a new stator no matter how industrial it claims to be will not fix the issue as the rotor generates so much current converts them into smoke if you're well heeled there's an updated stator and rotor combo available. Or it may just be the battery or the rec!

As I'm not a millionaire I fitted a linear rectifier and a stator cooler, and mine's been spot on ever since, charging at 14v.

Regards
Ian

Sent from my SM-G965F using Tapatalk

BrianRSA · Mar 24, 2019

Charge definitely the problem

Duggers said:
Hi Brian,

The battery charging at that voltage is a problem. You'll get problems with idle and cutting out. Something is away with the charging circuit, be it stator, rectifier or battery. Stator is a known issue with Gen 2 and there are loads of posts about it. You should have approx 60v AC at 4k rpm on all 3 phases or the stator is toast. Fitting a new stator no matter how industrial it claims to be will not fix the issue as the rotor generates so much current converts them into smoke if you're well heeled there's an updated stator and rotor combo available. Or it may just be the battery or the rec!

As I'm not a millionaire I fitted a linear rectifier and a stator cooler, and mine's been spot on ever since, charging at 14v.

Regards
Ian

Sent from my SM-G965F using Tapatalk

Thank you Duggers

I have checked and got 12,4V charge back to the battery. The cycle is at the repairers now to get the charging sorted out. I have a repairer that specializes in our bikes. His brief report was that he will re-locate the voltage rectifier, repair the stator and install LED headlamps that draw less power.
Thank you very much for your advice, I will probably collect my cycle Friday

Cheers

Brian

Duggers · Mar 24, 2019

Hi Brian,

Thanks for responding.

Many people don't understand the problem with the Gen 2, and changing the headlights to draw less power is the exact wrong thing to do! This will cause the standard rectifier to shunt its load to ground even more, and cause the stator to overheat and burn up even quicker. Seriously I advise against this approach.

Regards
Ian

Sent from my SM-G965F using Tapatalk

2008 RSV Factory unsteady idle

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