Bye Bye Rect-O-fier

fyv0h · March 16th, 2012, 03:49 PM

Or something like that...

We had an issue a while back where the battery would die while riding. Never enough to kill the bike, but enough to not want to start back up. So we tested the 4 year old battery. It wasn't doing too well. We replaced it and went on our merry way. Fast forward a couple weeks and the battery is dead after a ride. I check voltage, it's reading 7v. I put it on the tender. I yank the fairings to test the Recto and the Alt, but I only got as far as the rectifier before I noticed that the connector that runs into the Recto has a fried wire. It's a yellow one. Positioned on the front right side of the connector. The connector is burnt through.

I'll order a rectifier, if for nothing more than peace of mind. But the questions are as follows: If this is an alternator wire, would the alternator be shot? And with the connector melted at this port (exposes adjacent ports slightly), what are my options for repair? I REALLY don't want to replace the harness.

loz944 · March 16th, 2012, 03:58 PM

If you are lucky you maybe able to find a replacement connector block (just the plastic part)

or even get one from a breakers yard

alex.s · March 16th, 2012, 05:13 PM

when i replaced my fried VRR, my connector block was also melted. i used terminal block connectors to replace it. my stator was fine. but i also had a fried crank position pickup coil and i had to replace that which comes as a single part stator+pickup coil. you probably dont need to replace it but its pretty quick to test the stator, just use an ohm meter across each of the 3 coil leads. testing one set at a time (ie- 1 and 2, 2 and 3, 3 and 1). if any of them are open / no connection, you know the stator is bad. oem stators are pretty expensive. you can pick up fine used ones from the wrecker or aftermarket stators from places like rickystator or electrosport.

fyv0h · March 17th, 2012, 12:01 PM

Put the meter on the battery. At 5k revs, voltage changes very little, even dips slightly when held at 5k. So I checked the alternator output. Book calls for ~40vAC across the three yellows. "Output voltage much higher...the rectifier is damaged" says the book. Define "much higher." I'm reading ~50vAC. Is 25% high tooooooooo dang high?

alex.s · March 17th, 2012, 12:32 PM

50vac is kinda high. the book should list resistance values also. check the resistance of each coil to make sure one is actually bad.

Mountain Dew · March 17th, 2012, 12:37 PM

I always call it the rectal fire :3

fyv0h · March 17th, 2012, 12:48 PM

book calls for 0.05 - 0.6 ohms, measuring across all yellows shows spot on 0.6.

alex.s · March 17th, 2012, 01:51 PM

Quote:

Originally Posted by fyv0h

book calls for 0.05 - 0.6 ohms, measuring across all yellows shows spot on 0.6.

sounds fine to me. like i said mine was fine after i fried the VR/R.

March 16th, 2012, 03:49 PM	#1
fyv0h ninjette.org member Name: Jesse Location: Nash Co, NC Join Date: May 2011 Motorcycle(s): 2008 250r, of the blue variety (bestowed to Ninja_Duck22), 1998 CBR Smokin' Joe Posts: 58	Bye Bye Rect-O-fier Or something like that... We had an issue a while back where the battery would die while riding. Never enough to kill the bike, but enough to not want to start back up. So we tested the 4 year old battery. It wasn't doing too well. We replaced it and went on our merry way. Fast forward a couple weeks and the battery is dead after a ride. I check voltage, it's reading 7v. I put it on the tender. I yank the fairings to test the Recto and the Alt, but I only got as far as the rectifier before I noticed that the connector that runs into the Recto has a fried wire. It's a yellow one. Positioned on the front right side of the connector. The connector is burnt through. I'll order a rectifier, if for nothing more than peace of mind. But the questions are as follows: If this is an alternator wire, would the alternator be shot? And with the connector melted at this port (exposes adjacent ports slightly), what are my options for repair? I REALLY don't want to replace the harness.

March 16th, 2012, 03:58 PM	#2
loz944 ninjette.org guru Name: Laurence Location: Bangbuathong Thailand Join Date: Jan 2012 Motorcycle(s): Green 2012 Ninja 250SE and a Yamaha fino scooter (my wife's really) Posts: 355	If you are lucky you maybe able to find a replacement connector block (just the plastic part) or even get one from a breakers yard __________________________________________________ Be safe ride smart .....a dumb rider is a dead rider

March 16th, 2012, 05:13 PM	#3
alex.s wat Name: wat Location: tustin/long beach Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much. Blog Entries: 5 MOTM - Oct '12, Feb '14	when i replaced my fried VRR, my connector block was also melted. i used terminal block connectors to replace it. my stator was fine. but i also had a fried crank position pickup coil and i had to replace that which comes as a single part stator+pickup coil. you probably dont need to replace it but its pretty quick to test the stator, just use an ohm meter across each of the 3 coil leads. testing one set at a time (ie- 1 and 2, 2 and 3, 3 and 1). if any of them are open / no connection, you know the stator is bad. oem stators are pretty expensive. you can pick up fine used ones from the wrecker or aftermarket stators from places like rickystator or electrosport. __________________________________________________

March 17th, 2012, 12:32 PM	#5
alex.s wat Name: wat Location: tustin/long beach Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much. Blog Entries: 5 MOTM - Oct '12, Feb '14	50vac is kinda high. the book should list resistance values also. check the resistance of each coil to make sure one is actually bad. __________________________________________________

March 17th, 2012, 12:37 PM	#6
Mountain Dew Ambrosia. Name: Jaymie Location: Oahu, Hawaii Join Date: Aug 2011 Motorcycle(s): 1974 Honda CB550K0 W.I.P. Posts: A lot.	I always call it the rectal fire :3 __________________________________________________ Life's better on the Mountain.

March 17th, 2012, 12:01 PM	#4
fyv0h ninjette.org member Name: Jesse Location: Nash Co, NC Join Date: May 2011 Motorcycle(s): 2008 250r, of the blue variety (bestowed to Ninja_Duck22), 1998 CBR Smokin' Joe Posts: 58	Put the meter on the battery. At 5k revs, voltage changes very little, even dips slightly when held at 5k. So I checked the alternator output. Book calls for ~40vAC across the three yellows. "Output voltage much higher...the rectifier is damaged" says the book. Define "much higher." I'm reading ~50vAC. Is 25% high tooooooooo dang high?

March 17th, 2012, 12:48 PM	#7
fyv0h ninjette.org member Name: Jesse Location: Nash Co, NC Join Date: May 2011 Motorcycle(s): 2008 250r, of the blue variety (bestowed to Ninja_Duck22), 1998 CBR Smokin' Joe Posts: 58	book calls for 0.05 - 0.6 ohms, measuring across all yellows shows spot on 0.6.

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