Subject: RE: Eldo Charging Dilemma
Author: Derek Hamlet
Date: Aug 30, 2001, 1:31 PM
Post ID: 1708062724
Tom et al,
Thanks so much for this info. It's amazing the little but important things
we learn from each other that keep our rides running.
I followed your advice. The first connection showed as you predicted very
little action. Grounding out the field lead shot the voltage output up to
35 or something. So, generator looked good. So, apparently both of the
old Bosch regulators were faulty. A quick trip to napa found me a
mechanical regulator part no. VR502. It's direct swap for mounting except
for one connector that wanted a screw on instead of slip on. A light
modification to the connector and it was done. I polarized the regulator
as per the instructions that came with it and fired it up. Shazamm the
little red light went out.
I'm happy again.
Now I can move back to my BMW magneto to battery coil ignition backup
rewiring job.
At 01:20 AM 8/30/01 +0000, you wrote:
| Derek, There are two wires which go from the regulator to the generator. One goes to the D+ terminal and is the "armature" lead. This is the one that delivers the current to the battery, etc.. The other lead goes to the DF terminal on the generator and is the "field" lead. Disconnect the leads from the regulator. Get a voltmeter and connect it between the armature lead and ground. Slowly rev the engine up to about 3000 RPM and see if the output voltage from the generator increases to at least 15 volts. (Chances are that nothing much will happpen.) Next, ground out the field lead and do the same test. This should yield a significantly higher voltage. Don't do this for long or you may damage something. If you find after doing the second test that the ouptut voltage of the generator is up around 15-18 volts (or more), chances are the generator is OK, but the regulator is kaput. You can try touching up the points in the regulator with some 600 grit wet-or-dry sandpaper or a points file. Just make sure that you do not alter the spacing between the contacts when you do it or the regulator will over or under charge the battery. Clean the contacts again and see if it works. Living in Victoria, i.e. maritime climate, you may have some internal corrosion in the regulator that needs to be removed in order to get the thing working. Tom '70 (July '69) Ambassador 99.8% Complete, 10% Left To Go '82 V50-III Shelby Township, Michigan Derek Hamlet wrote:
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Victoria, British Columbia