New rotors? was battery question.

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waylander
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My Motorcycle: 1983 Honda CB550SC
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New rotors? was battery question.

#1 Unread post by waylander »

This all applies to my 1983 CB550 nighthawk.

Ok, so I removed the stator and took it in to get a replacement. The shop tested it or me and found everything in working order. I have done the tests for the regulator/rectifier and it seems to be good.

My manual tells me that the only way to test the rotors is to swap them out with new ones. should I not be able to tell if these rotors are magnetized without swapping them?

The rotors that I have currently are original to the bike and do not seem to have any magnetic "charge" at all. When I took the stator in I was shown used rotors that they would sell me as a replacement but these also had no magnetic field to them.

How can I tell without shelling out $80 bucks for used rotors that may or may not be good?

And am I even on the right track??? I'm still only pulling 13.5 volts out of the charging system and I need help.

Tx
Waylander

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mydlyfkryzis
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#2 Unread post by mydlyfkryzis »

I looked at the microfiche for your bike. the rotors are only magnetic when the field coild is energized. You do not have a permanent magnet rotor.

so no magnetism when unenergized is normal.
Richard - Fully Dressed

Naked 1991 Honda NightHawk 750
Naked 1976 Honda CB360T

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waylander
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#3 Unread post by waylander »

Tx for that. I am going to re-test the regulator and make sure I did the tests correctly.

When I do the continuity tests for the stator is the field coil included? I assume that it is but nowhere in my manual does it even mention the field coil.

Is there a separate test for this?

Tx again for the help
Waylander

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mydlyfkryzis
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#4 Unread post by mydlyfkryzis »

I don't have a manual for your model. But on mine, the 3 wires for the stator are yellow.

The field coil that magnetizes the rotor are black and white.

The Stator coils are 0.4-0.6 ohms.

The field coil (B-W Wires) Are 2.1-2.6 ohms.

that's all I have on it.
Richard - Fully Dressed

Naked 1991 Honda NightHawk 750
Naked 1976 Honda CB360T

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