Alternator Rotor


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Jim-Jim
ICOA Member
ICOA Member
Posts: 178
Joined: Sun Mar 02, 2003 11:07 pm
Location: San Diego, CA
Location: San Diego, CA

Alternator Rotor

Post by Jim-Jim »

I have been talking to an R/R manufacturer 'tech' and have received some information I would like to confirm.

Does anyone have a 'BRAND NEW' Rotor -NOT- installed?

If they do:

Could you please measure across the Copper Slip Rings with a Digital Voltmeter and see what resistance you have.

According to the man., you should see no less than 4 ohms and no more than 5 ohms (4.8 ideal).

According to the TM, the spec is 3.5 - 4.8 ohms.

When I told him that, he said the TM is wrong and all Rotors today are wound to the 4-5 spec so the R/R's will all work correctly.

If the Rotor is below 4 ohms, it will draw too much current and shut the R/R down.

So, I would like to have some feedback from some of you who have NEW Rotors and can check them for me.

Thanks.

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