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Shinglejohn · 08-10-2009, 11:10 AM

My 81 CB650 isnt charging, once again.

It put a new rotor on it, as well as an R/R. Both aftermarket. It worked beautifully for about 3 months. Now all of a sudden no more charging. Its putting out about 12.4v at 5000.

the new rotor is showing no resistence between the copper rings. The brushes are damn near new as well and are making good contact.

The bike seems to be running into this problem when it gets hot, rides over 50 miles or so. Could this be causing a short?

seruzawa · 08-10-2009, 11:49 AM

Might be a crappy rotor. Sounds like it is shorted. Low quality wire that isn't coated properly... incompetent winding where the wires get nicked... poor construction... who knows? Rotor should have several ohms. Is your ohmmeter accurate?

Dang, man. You ARE persistent. I'd have given up by now and found another bike. I'm not getting sucked in again like I did on a Magna. It seems like the bike is almost good.... will only take a couple hundred more bucks.. again... and again... and again....

Shinglejohn · 08-10-2009, 12:17 PM

Yeah, i want to throw the damn thing into the lake. It worked great for the past four months... I almost started liking the bike.

upon firther inspection, i did find a nicked wire on the stator. Would this have caused my rotor to short? My ohmmeter is accurate(fairly anyway), it is showing no reading between the rings. But i tested it on other known working parts, it reads properly.

sarnali2 · 08-10-2009, 12:25 PM

If there's no resistance between the windings then you have a short in there. Time for the ol' match in the gas tank weenie roast and a newer bike.

The_AirHawk · 08-10-2009, 12:27 PM

Quote:

Originally Posted by Shinglejohn

Yeah, i want to throw the damn thing into the lake. It worked great for the past four months... I almost started liking the bike.

upon firther inspection, i did find a nicked wire on the stator. Would this have caused my rotor to short? My ohmmeter is accurate(fairly anyway), it is showing no reading between the rings. But i tested it on other known working parts, it reads properly.

It could. If it's in an easily repairable spot; I'd re-solder it, paint the whole thing again with varnish (or some of that insulating paint that's available in spraycans - look here for an example: Varnish,Insulating,Red - Rubberized Coatings & Industrial Varnish - Paints - Janitorial & Painting : Grainger Industrial Supply ), double-check the resistance again on all the phases - and if it checks OK - reassemble and ride it.

Or change the stator again, being sure to triple-check for the same problems.

seruzawa · 08-10-2009, 12:41 PM

If there's one nicked wire there are likely to be more. I'd avoid this aftermarket company like the plague.

Google around. I'm pretty sure there's a place that rewinds these things and does a good job.

Kenneth_Moore · 08-10-2009, 12:57 PM

There's a company in CO I used for the old Connie. I'll see if I can dig up their name. However, googling motorcycle electric repair seemed to find them. Estes, CO is the city and state.

The_AirHawk · 08-10-2009, 01:08 PM

I've successfully used these guys: RM Stator - Stator, High Performance CDI Box, Regulator Rectifier, High Output Generator, Yamaha Stator, Honda Stator, Stator Repair, Arctic cat ZR stator, Arctic cat thundercat stator, Ski-doo stator repair,Yamaha Warrior stator,Yamaha Grizzly stato

08-10-2009, 11:10 AM	#1
Shinglejohn Registered Member Join Date: Jul 2008 Location: Cleveland, OH Posts: 73	CB 650 charging woes continue My 81 CB650 isnt charging, once again. It put a new rotor on it, as well as an R/R. Both aftermarket. It worked beautifully for about 3 months. Now all of a sudden no more charging. Its putting out about 12.4v at 5000. the new rotor is showing no resistence between the copper rings. The brushes are damn near new as well and are making good contact. The bike seems to be running into this problem when it gets hot, rides over 50 miles or so. Could this be causing a short?

08-10-2009, 11:49 AM	#2
seruzawa Robby Join Date: Nov 2001 Location: 8501 ft. Posts: 16,803	Might be a crappy rotor. Sounds like it is shorted. Low quality wire that isn't coated properly... incompetent winding where the wires get nicked... poor construction... who knows? Rotor should have several ohms. Is your ohmmeter accurate? Dang, man. You ARE persistent. I'd have given up by now and found another bike. I'm not getting sucked in again like I did on a Magna. It seems like the bike is almost good.... will only take a couple hundred more bucks.. again... and again... and again.... __________________ I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tanhauser Gate. All those moments will be lost in time, like tears in the rain.

08-10-2009, 12:25 PM	#4
sarnali2 Aging Cafe` Racer Join Date: Jun 2007 Location: Sittin' down by my window, lookin' at the rain. Posts: 8,132	If there's no resistance between the windings then you have a short in there. Time for the ol' match in the gas tank weenie roast and a newer bike. __________________ "Carpe` Throttelum -Loud Suits Save Lives" "All the BMW riders in the room, I want you to leave. Now. Out. "

08-10-2009, 12:41 PM	#6
seruzawa Robby Join Date: Nov 2001 Location: 8501 ft. Posts: 16,803	If there's one nicked wire there are likely to be more. I'd avoid this aftermarket company like the plague. Google around. I'm pretty sure there's a place that rewinds these things and does a good job. __________________ I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tanhauser Gate. All those moments will be lost in time, like tears in the rain.

08-10-2009, 12:57 PM	#7
Kenneth_Moore Registered Member Join Date: Jun 2007 Location: VIsiting the GIft Shop in the Pit of DIspair Posts: 7,118	There's a company in CO I used for the old Connie. I'll see if I can dig up their name. However, googling motorcycle electric repair seemed to find them. Estes, CO is the city and state. __________________ www.kennethmoore.org

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08-10-2009, 12:17 PM	#3
Shinglejohn Registered Member Join Date: Jul 2008 Location: Cleveland, OH Posts: 73	Yeah, i want to throw the damn thing into the lake. It worked great for the past four months... I almost started liking the bike. upon firther inspection, i did find a nicked wire on the stator. Would this have caused my rotor to short? My ohmmeter is accurate(fairly anyway), it is showing no reading between the rings. But i tested it on other known working parts, it reads properly.

08-10-2009, 01:08 PM	#8
The_AirHawk Founding Member Join Date: Jun 2007 Location: Livin' in a Van: down by the Mariana Trench Posts: 10,891	I've successfully used these guys: RM Stator - Stator, High Performance CDI Box, Regulator Rectifier, High Output Generator, Yamaha Stator, Honda Stator, Stator Repair, Arctic cat ZR stator, Arctic cat thundercat stator, Ski-doo stator repair,Yamaha Warrior stator,Yamaha Grizzly stato __________________ *Parfois, on fait pas semblant* Sometimes, it's not pretend Oderint Dum Metuant Let them hate so long as they fear политики предпочитают безоружных крестьян Politicians Prefer Unarmed Peasants Nothing to see here, Citizen. Move along now...