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Post by theswede on Dec 2, 2011 10:06:38 GMT -5
Last night I had my Yamaha Giggle/C3 scooter apart, and among other things checked the battery. Turns out it seems to have been overheating, some acid had leaked out of the vents.
Checking the charging voltage showed that it is stable at 15V, the service manual says it should be 14V so obviously something is wrong.
The battery seems OK though, scooter starts and runs fine.
The scooter had hardly been used at all and had been sitting outside in a shed for about a year when I bought it, since then I have some 2000km's on it.
I am thinking it might be a bad ground or other connection on the rectifier so I'll check that first but otherwise I think I need to replace it.
It seems strange though that the charging voltage was stable, I would have imagined that with a busted rectifier it would vary with the RPM...?
Otto
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Post by Rebel on Dec 2, 2011 11:21:06 GMT -5
When electronics are broken I guess they can do funny things. At least you didin't get stranded someplace. Is the rectifier very expensive? If it is cheap, I'd go for just putting a new one in and see if it is back in specs. Also check you voltmeter and make sure it is calibrated correctly.
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Post by theswede on Dec 2, 2011 13:35:28 GMT -5
Well, there doesn't seem to be anything but Genuine Yamaha parts available, the cheapest I have found online so far is $151, but that does not include shipping from the US.
I need to contact my local Yamaha rep and see what the thing costs here...
The voltmeter wasn't mine so I can be 100% certain but I believe it was ok.
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Post by tvnacman on Dec 4, 2011 15:37:05 GMT -5
Thes,
Did you happen to notice a balast resistor , what part of the country are in is it hot weather where you are ? Here in NYC I would be very happy to have 15VDC charging voltage in the cold .
John
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Post by Rebel on Dec 4, 2011 23:19:55 GMT -5
He is in Sweden, probably not too hot there.
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Post by theswede on Dec 5, 2011 2:54:12 GMT -5
Not sure if the setup includes a balast resistor or not, but I see you point. I'll have a look at the wiring diagram in the service manual. Replacing a resistor should be cheaper than replacing the rectifier...
Thanks!
PS Temps here are down to about 30F this week. Still no to bad.
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Post by tvnacman on Dec 5, 2011 13:50:38 GMT -5
You could add the resistor with a switch . NYC gets on the cold side . I ride till ice or snow .
John
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Post by theswede on Dec 6, 2011 10:57:25 GMT -5
Checked the service manual, the system has no balast resistor... And Yamaha Sweden wants $390 for a new rectifier  . Suddenly shipping one in from the US seems cheap! |
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Post by Rebel on Dec 6, 2011 11:28:10 GMT -5
lol, nice to know we get cheaper prices than some places do, sorry that they beat you up with the prices though.
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Post by tvnacman on Dec 6, 2011 16:19:50 GMT -5
post a pic of your regulator , i have some connections for parts . That goes for anyone reading the post , in need of parts .
John
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Post by theswede on Dec 19, 2011 13:48:15 GMT -5
The battery died completely over the weekend, and I replaced it with a new gel-type scooter battery of the same rating. I had an idea that perhaps the high charging voltage was related to a malfunctioning battery rather than an bad rectifier. Not so, unfortunately. Charging voltage hit 14.9v when I tested... However, I did find a used rectifier on eBay for $25 which I bought. I Love eBay! 10 years ago I would never have have imagined I'd be buying used scooter parts from a breakers yard in Indiana  |
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Post by Rebel on Dec 20, 2011 3:14:59 GMT -5
Great price on the part. Back when I was on a very tight budget and had cars/trucks that broke down often I would go to the auto grave yard and buy used parts if it was an expensive one I had to replace. Had lots of good luck with that. I've been to the local motorcycle wrecking yard/dismantler looking for parts too, mostly because the motorcycles I rode were so old the local shop often times didn't stock the parts for it, again had good luck with that too.
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Post by tvnacman on Dec 22, 2011 3:41:50 GMT -5
The how many wires are on the regulator , and what color are they ?
John
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CAN YOU HELP ME OUT MAN,AS i LOST ME JOB DUE TO NOT BEING ABLE TO GET THERE?ANY INF