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garythomas8708(at)yahoo.c Guest
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Posted: Mon Aug 10, 2009 12:18 pm Post subject: Overvoltage |
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All,
I'm posting this on the Aeroelectric list also but, seeing as a number of us share this configuration, I thought I'd try my luck here too.
I have a 601XL/Corvair with the standard William Wynne configuration.� I have the John Deere alternator and regulator plus the PMOV overvoltage unit from B&C. I feel confident that I have it wired correctly since I would get 12V when I switched on the master, and then 14V when I switched on the alternator and started the engine. Recently I noticed my battery had a low charge, and the voltmeter showed a flat 12V, even with the engine running.
I had the battery recharged and load tested (it was fine), and I tested the alternator (around 40V ac on the two wires that lead to the regulator). The two wires that came out of the regulator and connected to the B&C capacitor were showing just 0.05V or so when I connected each of them separately through a voltmeter to a ground. Clearly a problem.
So I bypassed the entire overvoltage setup and connected these tabs dirrectly to the system bus. Now I get 14V when the engine is running.
I am at a loss to figure out where the problem is. I believe it must be somewhere in the B&C overvoltage system, but don't know where.� Fuses are all ok.
Any ideas?
Gary
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craig(at)craigandjean.com Guest
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Posted: Mon Aug 10, 2009 1:39 pm Post subject: Overvoltage |
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With the OV circuit installed can you monitor the current flow in the lead from the positive terminal capacitor to the “Normally Open” (NO) contact of the relay? Was there 12 volts across the coil of the relay?
“The two wires that came out of the regulator and connected to the B&C capacitor were showing just 0.05V or so when I connected each of them separately through a voltmeter to a ground. Clearly a problem.
It may be this (from Mark Langford’s site): “Subsequent tests have shown that pulling the 12V wire off of terminal 5 will stop the dynamo from charging”
http://home.hiwaay.net/~langford/corvair/dynamo.html
-- Craig
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of Gary Thomas
Sent: Monday, August 10, 2009 2:15 PM
To: zenith-list(at)matronics.com
Subject: Overvoltage
All,
I'm posting this on the Aeroelectric list also but, seeing as a number of us share this configuration, I thought I'd try my luck here too.
I have a 601XL/Corvair with the standard William Wynne configuration. I have the John Deere alternator and regulator plus the PMOV overvoltage unit from B&C. I feel confident that I have it wired correctly since I would get 12V when I switched on the master, and then 14V when I switched on the alternator and started the engine. Recently I noticed my battery had a low charge, and the voltmeter showed a flat 12V, even with the engine running.
I had the battery recharged and load tested (it was fine), and I tested the alternator (around 40V ac on the two wires that lead to the regulator). The two wires that came out of the regulator and connected to the B&C capacitor were showing just 0.05V or so when I connected each of them separately through a voltmeter to a ground. Clearly a problem.
So I bypassed the entire overvoltage setup and connected these tabs dirrectly to the system bus. Now I get 14V when the engine is running.
I am at a loss to figure out where the problem is. I believe it must be somewhere in the B&C overvoltage system, but don't know where. Fuses are all ok.
Any ideas?
Gary
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