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Search took 0.00 seconds. Search: Posts Made By: rotorwrench
Forum: Model A (1928-31) 05-03-2023, 10:32 AM
Replies: 53
Views: 13,641
Posted By rotorwrench
Re: Parasitic Drain?

Another common problem is the brake light switch. Some of the reproductions don't work well and can just have enough contact to allow juice to flow to the brake light. I've seen more than one with a...
Forum: Model A (1928-31) 07-28-2021, 05:36 PM
Replies: 53
Views: 13,641
Posted By rotorwrench
Re: Parasitic Drain?

On most alternators 50 miliamps is considered normal leakage. Anything above 80 miliamps in too much.

I quit using the 6-volt conversion alternators due to the high charging level of the voltage...
Forum: Model A (1928-31) 07-27-2021, 08:08 AM
Replies: 53
Views: 13,641
Posted By rotorwrench
Re: Parasitic Drain?

A 6-volt lead/acid battery will have a higher voltage reading right after a full charge but will lose a tenth of a volt after it sets a while. This is normal from my experience.

The newer the...
Forum: Model A (1928-31) 07-25-2021, 07:31 AM
Replies: 53
Views: 13,641
Posted By rotorwrench
Re: Parasitic Drain?

Alternators also have residual magnetism in the rotor & stator. This is similar to the residual magnetism in the generator field pole shoes. This is generally what excites the field to start with....
Forum: Model A (1928-31) 07-24-2021, 05:15 PM
Replies: 53
Views: 13,641
Posted By rotorwrench
Re: Parasitic Drain?

I don't know about you all but less than 50 milliamps is negligible. An electric clock draws more than that. A car should be able to set for 14 days with little or no loss of starting capability.
...
Forum: Model A (1928-31) 07-24-2021, 02:49 PM
Replies: 53
Views: 13,641
Posted By rotorwrench
Re: Parasitic Drain?

I've worked on many old GM vehicles that had the 10si and repaired dome light switches that showed a current draw but there was never a draw after the repair completion. Now I'm not a fan of the...
Forum: Model A (1928-31) 07-24-2021, 10:25 AM
Replies: 53
Views: 13,641
Posted By rotorwrench
Re: Parasitic Drain?

Alternators with a bad diode can have a parasitic draw but a well functioning unit will have no draw at all. It is not in their nature to have a problem like that but it can happen over time with...
Showing results 1 to 7 of 7

 
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