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312Icarus
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Joined: 07/15/2016
Posts: 408

On my ‘68 r50US I’m only getting ~6.8 volts at the battery at ~3000 rpm with the headlight off. Riding for a couple of hours with the headlight on, the battery voltage drops to ~5.8 vdc. The generator has new brushes and puts out over 7 volts testing it.

I’ve cleaned the contact points on the regulator to no avail. I’m wondering (absent a new regulator) what I should consider tweeting?

Icarus

Daves79x
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VBMWMO #9030
Joined: 08/09/2015
Posts: 340
I Read

I read everything about adjusting these regulators that I could find when I was having a similar problem on my R50. There was a lot to wade through, but unless I was missing the golden nugget - nowhere did anyone actually describe exactly what and how much to adjust on the stock regulator. I gave up and got a modern electronic one and haven't looked back.

Dave

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Dave

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6737
In the summer 2013 VBMWMO

In the summer 2013 VBMWMO magazine, there was a discussion of a /2 mechanical regulator. I'm not near the article, but my thought is that the features of the regulator and how to adjust it were provided. Could be wrong...

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

Twocams
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VBMWMO #8750
Joined: 03/16/2014
Posts: 706
On Duane Ausherman web site

On Duane Ausherman web site he talks about how to adjust the /2 Bosch regulator. What the points gaps should be etc.

twocams https://w6rec.com/bosch-voltage-regulator-adjustment/

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Twocams
69 R69S
92 R100RT
2004 Aprilia Atlantic 500cc Scooter

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