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Unread 12-13-2018, 01:38 AM   #1
Not Yet Wild
Harley Davidson
 
Join Date: Dec 2016
Location: Nebraska
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Default Diode across solenoid?

Is adding a flyback diode across solenoid coil necessary on 36v HD carts?
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Unread 12-13-2018, 08:14 AM   #2
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Default Re: Diode across solenoid?

It is not necessary however I would recommend doing it as it is another way to protect the motor controller, just make sure you get the polarity correct.
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Unread 12-13-2018, 11:45 AM   #3
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Default Re: Diode across solenoid?

The little micro switch on speed board is only vulnerable part I see and I did have to replace it last year. Figured it was just age but maybe flyback helped kill it (?).

Yep, figured to solder correct diode end (-) to the feed wire so direction can never be changed.

...thing is, this 12v coil (factory 6v) only has a 9v drop and around 900ma across it so is there even much of a flyback to be concerned with?
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