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Fried Battery - Honda SH232 R/R New Stator

  • Thread starter Thread starter oohsam
  • Start date Start date
O

oohsam

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Hi Guys,

Have pretty much finished my build (gs1100 Romsey) and I took the bike out for a ride.
I got back and my battery was pouring out smoke and leaking acid.
Managed to calm it all down and get the battery out.

I have a brand new stator and I bought a Honda sh232 (from ebay... )

From all the reading I've done, it looks like there was too much voltage going to the battery and this would have caused the problem.
I've read lots of doc's on GSR, but still not sure where to start.

I'm thinking I should start up the bike (with a new battery ofcourse!) and test voltage and different RPM's. But how much voltage is too much?
What is the optimum voltage for charging ?

Thanks guys.
 
Have you gone through the stator papers out on the main GS Resources page (In the Garage area) yet? If not, I would start there as I believe it talks about voltage between 14 and 15 at 4000rpm.

That would just be my suggestion anyway.
 
Thanks cowboyup.
I've gone through them yeah, lots of info just want to ensure I'm doing the right thing.
 
If you have gone through the stator papers AND DONE THE TESTS that are called for, you should know what the voltages should be, as that is about the first thing that you check.

Technically speaking, anything over 12.8 volts will charge the battery. The question is "how well and how quickly". It is much better for the battery if the voltage is over 13.6. Suzuki called for voltage in a range from about 14.0 to 15.5, but that is a bit high. 14.0 to 14.5 is near-perfect. If you are running a sealed AGM-type battery, they are a bit more tolerant of high voltage, but I would still keep it under 15.0
 
Ran the stator papers.
Stator is producing everything as per normal (as per basscliffe's papers)
R/R is outputting 16+ volts to the battery when increasing RPM's. It even went up to 17Volts at one point before I decided to kill it....

This to me sounds bad...New R/R >?
 
At Idle I have 14 .3 volts ...

at 2k rpm i have 16.9 volts
at 5k I have 17.2 volts

Some googling tels me that 17 volts is quite ok...is this the case?
 
oohsam said:
Some googling tels me that 17 volts is quite ok...is this the case?
Click to expand...
Just what are you Googling that is telling you that 17 volts is OK?

Also, are you going to believe some random Google searches or a bunch of guys that have very intimate knowledge of these bikes?

Does your R/R have 5 wires or 6? It makes a difference how you hook them up.

.
 
That may be your problem there. The sense wire is supposed to aid the RR in letting it know how much voltage is getting to whatever circuit it's connected to, if it sees nothing, its going to pour voltage until it sees 12.5 volts or whatever amount it's supposed to be looking for. Ideally, you want to connect the sense wire to a SWITCHED power source. So when you turn the bike off, the battery doesn't have a slow drain. You'll want to test for the cleanest switched source possible, meaning one without a lot of voltage drop, or it may still slightly over charge the battery depending on how much drop there is. Most people hook it up to the tail light wire, but many have found that there is a significant enough voltage drop on this circuit to still cause over charging. I tap into the orange switched feed to the fuse block as this is a fairly short run and pretty clean.
 
ur joking right?
I was under the impression (mis understanding) that the sense wire just tels the R/R when the bike is on or off and was not really required.

well then egg on my face.
 
OH dear lord.
I just went out and hooked in the sense wire to the brake light. Steady 14.6 volts at 5k rpm.

Damn you Sam you stupid moron (abusing myself).

Thanks for the help guys....
 
I may be going thru this same thing. I hooked my sense wire up to the tail light wire that only has power when the light is on.

I am getting 19 volts with it as is, light off and no power to the sense. I was searching to see if that could be the cause of the problem.

I wanted to get advise before turning the light on, and powering the sense wire and then trying it again.
 
That's def ur problem. Hook it up.yo.the cable of the brake light that is always on not when u press the brake only. Ur issue will then go away. Cheers.
 
I hope it works I will try it again with power to the sense.

I think my problem is I have read a ton of stuff over the last 6 months on the charging system and my options.

The mistake I made was picking the wrong wire. When my stator went out originally it blew my low beam headlight and the tail light. That circuit was powered when I went looking for the sense connection and I did not realize I was hooking up to a non switch wire as there was no headlight or tailight actually on.

Other than that I have it hooked up just like Bassclifs recomendations.

Anyway I will try it with the sense hooked up correctly, if it still reads high then i will check the stator, which I have not been able to do since the ignitor was blown.

If stator checks out I will get another R/R perhaps the one I got is bad. We will see.
 
Ok, I ran out and tried it with the sense powered up and the voltage at the battery at idle was 13.02 just off idle it actually drops to apx 12.9 or so then at apx 4k or so I am seeing 13.8.

This makes me think the stator is getting week. I will do the test recommended on Basscliff's site and see if it still meets the parameters set out in that paper.

What do you guys think, if it checks out then perhaps I can get a bit more time out of it? Or should I just bite the bullet and buy a new one.

I got to say this 500$ bike has turned into quite the investment. LOL, but honestly I have really enjoyed tinkering with it.
 
Briars said:
Ok, I ran out and tried it with the sense powered up and the voltage at the battery at idle was 13.02 just off idle it actually drops to apx 12.9 or so then at apx 4k or so I am seeing 13.8.

This makes me think the stator is getting week. I will do the test recommended on Basscliff's site and see if it still meets the parameters set
Click to expand...
Those readings could mean bad/corroded connections, so reclean and retest. A liitle less than 13 volts at idle is OK, but it should perk up to 14 to 14.5 volts by 3 k. Since you have a sense wire, you've likely got a Shindengen R/R, so it's probably OK.
 
I did my stator test per BassCliffs guide and it checks out good! I wonder though if the battery being practically dead had anything to do with the low voltage readings. I highly suspect that is the case.

Anyway the bike is running beutifully I only need to get a new battery and a petcock kit. Then hopefully I will be good to go.

Thanks guys for helping me out on this. I knew the sense wire needed to be powered and doing its thing but when I accidently tried it unpowered and got 19 volts it scared me. I though there may be somthing else wrong as I found no other post with readings that high. I wanted to get confirmation before powering the sense wire and starting it again to take another reading.
 
I had a problem with cooking my battery a little, had to add distilled water regularly. I then realized that my sense wire was hooked to a source that had voltage droop (tail light). It(the R&R) was 'seeing' 1v+ less voltage than was actually at the battery, and so it sent 1v+ too much into the system. I hooked it up to my switched undrooped battery source at my coil relay mod, and havent overcharged my battery again.
Check your running voltage after the battery is charged and make sure the voltage is not too high 14.5v +
 
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