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Old 04-17-2025, 05:14 AM   #1
Piet
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Default model a cutat polarity sensitiv

just a double check. The cutout below is not polarity sensitive right? my ford is neg ground.

The cutout with diode is polarity sensitive, I know that. But the mechanical one I started to doubt now. But I don't think so.
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Old 04-17-2025, 05:32 AM   #2
fourfords
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Default Re: model a cutat polarity sensitiv

This looks like a reproduction cutout. In the photo on the left, The contact on the left goes to the battery. The contact on the right in the same photo goes to the generator.
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Old 04-17-2025, 06:02 AM   #3
nkaminar
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Default Re: model a cutat polarity sensitiv

There are two coils: one with small wire and many turns and one with larger wire and fewer turns. The one with small wire is voltage sensitive and closes the contacts once the generator voltage is high enough. The one with fewer turns has the full current running through it once the contacts close and keeps the contacts closed. Neither coil is polarity sensitive.
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Old 04-22-2025, 09:43 AM   #4
Piet
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Default Re: model a cutat polarity sensitiv

thanks. There are cut outs that are polarity sensitive right?
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Old 04-22-2025, 12:04 PM   #5
J Franklin
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Default Re: model a cutat polarity sensitiv

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Quote:
Originally Posted by Piet View Post
thanks. There are cut outs that are polarity sensitive right?
Ones that use a diode. You can use one for a Model T on -ground.
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