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Generators & Electric Motors General Discussion Antique Generators and Old Electric Motors: Questions and answers about restoring and showing old power generation systems.

Generators & Electric Motors General Discussion


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Old 02-07-2013, 11:26:48 AM
Radiomike Radiomike is offline
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Default Delco-light


At our museum, (In southern Alberta) where I volunteer we have just started to restore a Delco 850 watt 32 volt unit. It runs really well now with one exception; the shunt holding coil on the main switch. The winding is open circuit. Does any one know of a source for these coils? If not perhaps someone has rewound one and may know some details of the winding. I have measured the wire and it is 0.005'' and appears to be in at least five layers with paper between each layer. I would like to know the resistance of the coil so we can either attempt a rewind ourselves or get it done at a rewind shop.


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Old 02-07-2013, 02:30:37 PM
Jim Rankin Jim Rankin is offline
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Default Re: Delco-light

I believe you will want to count turns as it is disassembled. Seems likely that for a one-off like this, someone could take on that project and make a success of it as opposed to hiring it out.

Might even find the fault at the beginning of the winding.
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Old 02-13-2013, 10:59:38 PM
pbruxer pbruxer is offline
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Default Re: Delco-light

These series field shorting/starting switches are fairly common on e-bay and other places. The 2 coils are wound in opposite directions, when the switch is held up to crank the current through each coil goes in opposite directions so they oppose or buck eachother. When engine starts and comes up to speed current comes out the postive brushes then the coils work together to hold the ignition flipper switch up. Then the series field is shorted and the motor becomes a generator. Also lots of information on the web on delco light stuff.

Good Luck
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