SOHC.co.uk Forums > CB500/550

CB550 K0 - Generator de-rust

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JamesH:
Hi Alan. I'll let you know this evening - have let the windings soak for a few days. Going to remove the rotor tomorrow and leave to soak in the same fluid for a few days before checking for clearances etc...

JamesH:
5days of soaking in Metal Rescue...not bad at all!!

ST1100:
Now I'd apply some ACF-50 on the stator and parts for conservation...

Green1:
Impressive I expected the glue to breakdown soaking in that rust remover.

Mick

AshimotoK0:

--- Quote from: Green1 on May 10, 2016, 10:54:53 PM ---Impressive I expected the glue to breakdown soaking in that rust remover.

Mick

--- End quote ---

Stator has epoxy coating and magnet wire coating is pretty tough, should be OK.  Your problem will be if the rust has abraded through the magnet wire coating, as it did on 2 of my 400/4 stators that were only about 8 years old at the time. Just do the test I detailed earlier.

Currrently rewinding two Harley Davidson 50 Amp stators at work with both PEEK coated wire and PTFE coated wire, as we are running a test in some nasty aggressive refrigerant at 150 Deg C. for a project. Bike alternators seem to be permanent magnet rotors these days, must be the advances in rare-earth magnets, that were not around in the 70's

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