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64 R50 generator problem

johnab9hh@att.net
Posts: 3
Joined: Mon Nov 08, 2021 9:13 am

64 R50 generator problem

Post by johnab9hh@att.net »

I've had multiple gen problems.
My red light started flashing on. I found that the brushes were worn to the end.
I ordered a new set from MAX. after the third type shipped to me, i had a set that fit. They were hanging up in the carrier a little bit, so i sanded slightly with emery cloth, then cleaned the brushed and carriers with alcohol on swabs.
The light then went out.
When I would run the engine up to about 3k rpm (guessing) it would open the fuse to the battery. 
I put my good fluke meter to measure voltage. about 7.2 volts steady.
I put my good fluke dc ammeter on, about 2.8 amps, steady.
When I slowly would it up, everything was steady, then POP, the fuse to battery plus would open. I could not record the peak.
I looked for corrupted wiring, since I was in there, but found none. 
I have a new voltage regulator, from Vech's old stock at Max, but I don't want to throw parts at it. I'm not that type of guy. 
Ive read the Doug Rinckes manual, but it seems lacking in this area.
Thank you for your time

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wa1nca
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Re: 64 R50 generator problem

Post by wa1nca »

Fuse size ?
Tommy Byrnes
54 R51/3, 55 R50/Velorex 560 sidecar, 64 R27, 68 R69US, 75 R75/6
Ashfield, Ma
USA

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vechorik1373
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Re: 64 R50 generator problem

Post by vechorik1373 »

I agree, what amp fuse do you have installed? It may not be heavy enough.
Vech
Technical Adviser, Former owner, Bench Mark Works
662 312 2838 cell 9 am to 4pm CST PLEASE!

johnab9hh@att.net
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Joined: Mon Nov 08, 2021 9:13 am

Re: 64 R50 generator problem

Post by johnab9hh@att.net »

20 amp, and it makes an audiable POP
Any Clue?

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wa1nca
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Re: 64 R50 generator problem

Post by wa1nca »

Charging reading look good
20 amp fuse also good
Seems like a short somewhere in wiring harness
1st
When key is down terminal 15/54 is hot
power to :
disconnect one wire at a time
Horn
Stop light switch
neutral light switch
red charge light
directional flasher
2nd
key down turned for taillight
check tail light bulb and circuit
running light in headlamp
3r d
key down turned for headlight
check headlight circuit
Tommy
Tommy Byrnes
54 R51/3, 55 R50/Velorex 560 sidecar, 64 R27, 68 R69US, 75 R75/6
Ashfield, Ma
USA

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vechorik1373
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Re: 64 R50 generator problem

Post by vechorik1373 »

I agree, 20 amp is a big fuse for the bike. You have a DEAD short to ground somewhere.
Vech
Technical Adviser, Former owner, Bench Mark Works
662 312 2838 cell 9 am to 4pm CST PLEASE!

johnab9hh@att.net
Posts: 3
Joined: Mon Nov 08, 2021 9:13 am

Re: 64 R50 generator problem

Post by johnab9hh@att.net »

Thanks for the tips. Ill start checking. But its odd that this started IMMEDIATELY after replacing the brushes.
Also Tommy, de AB9HH 73

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wa1nca
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Re: 64 R50 generator problem

Post by wa1nca »

de AB9HH 73
Ham ?
Tommy Byrnes
54 R51/3, 55 R50/Velorex 560 sidecar, 64 R27, 68 R69US, 75 R75/6
Ashfield, Ma
USA

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schrader7032
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Re: 64 R50 generator problem

Post by schrader7032 »

wa1nca wrote:
Wed Dec 07, 2022 7:02 pm
de AB9HH 73
Ham ?
Look it up!!

https://wireless2.fcc.gov/UlsApp/UlsSea ... icense.jsp
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.

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wa1nca
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Re: 64 R50 generator problem

Post by wa1nca »

tnx Kurt
John 73
Amateur Extra Class
_.. . wa1nca
Tommy Byrnes
54 R51/3, 55 R50/Velorex 560 sidecar, 64 R27, 68 R69US, 75 R75/6
Ashfield, Ma
USA

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