Imo000

My newest project is a motorcycle that might need the rectifier/regulator changed. Doesn't have to be the same as the bike as most rectifiers work the same way but the plugs might be different. If anyone has a spare one that they want to sell, let me know. It needs to have 5 wires coming out of it and from something that has a simmillar displacement/power as a Suzuki GS500E twin.

69gaugeman

Wow. That's convoluted. Can't buy one on the internetz?

69gaugeman

LIKE THIS?

69gaugeman

OR THIS?

69gaugeman

WAIT! HERE ARE A COUPLE MORE!

Adamant1971

Is it a honda. I know my last VFR would kill them quickly, so much that I started carrying a spare under my seat.

69gaugeman

It's a suzi.

Imo000

I'm too lazy to shop online anymore. Hate the wait BUT dug into the bike last night and looks like the revious owner's diagnosis was wrong there is spark and the engine fired up on srarter fluid.

Torontoworker

I changed the kids unit on her SV 650S last year - they go bad because they are mounted in an area that doesn't receive enough cool air to flow across the heat sinks - not bikes you want to idle too long. They're a bitch to remove and reinstall as they mounted the bolt heads towards the inside of the frame with a cly in the way. WTF?

You have to verify that it *is* giving you unregulated 12V output before I would spend time and money changing it.

Imo000

Will do Adam. First step was to get it running and then see what is going on. Bike was parked in a dry garage for over 5 years.

theiceman

A rectifier wont stop it from starting , only stop it from charging the battery.

if you have a ton of AC ripple on the DC or have a sin wave or even half sin wave when you scope the DC , you have a bad rectifier. If you charge the battery it will start even with a bad rectifier.

Torontoworker

Agree.

Plus whats starter fluid? Wouldn't that be gas?

Imo000

I finally figured out what was going on. The rectifier must have went at some point and the PO replaced it. The fried rectifier overloaded the stator/alternator and the wires (not the windings) got crispy. These wires over time (after the PO put a new rectifier in it) slowly snapped and the battery stopped charging. The PO at this point parked it and 5 years later I bought it. He told me the dealer diagnosed it as a bad rectifier and I took his word for it. Over the weekend I did a bunch of testing to narrow down one of the stator wires as being a problem. Took the stator out and sure enough, one was broken and all were crispy. Got lucky as the windings were good. Got some spare wires and some fibreglass expandable sleeves and replaced the charred wires. All is normal and well with the charging system. In the mean time pulled the carburetors and cleaned them (they were pretty clean), re sealed the intake flanges and put better clamps on them. Drained the tank and with fresh fuel, it runs very nice. Buying a new battery tomorrow and if the bike sells near the asking price I'll put new tires on it. I forgot how easy it is to work on bikes.