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stator overheating

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Brian Cairns:
1978 Cb550 four K3 ( American import)

Hi,
I am a newbie to the forum.

Recently bought the bike above, soon after the stator burnt out, got stator rewound, and it burnt out again.
I managed to find another unused original stator and replaced the regulator and rectifier with a 2 into one reg/rec (bought from David Silver parts). I did not do the work on this bike, an experienced mechanic did.
Also fitted with electronic ignition.

The stator side casing is now running extremely hot, so hot that you cannot touch it for more than a second.
I don't want to ride bike in case I do damage....is the heated casing normal?

Thanks

Brian

Trigger:
I would put everything back to standard, including points and then start a investigation  ;)

deltarider:
Some aftermarket rec/reg units simply have the alternator work a full 100% all the time and shunt excess to the frame. Not a good situation imo. OEM REC and REG are well designed and usually outlive a bike. Please specify what electronic ignition you have. Not that that would worry me much. What's the state of your battery? I'm asking because it does not make much sense to comment when battery is partially depleted. You may want to read the charging specifics in the Shop Manual Cb500-550 on p. 94 (bottom): https://www.dropbox.com/s/lirtu1euydi0rol/Honda%20CB500_CB550%20%20Four%20Service%20Manual%20Ammended.pdf?dl=0

McCabe-Thiele (Ted):
Assuming you have a good battery I would be checking all the connections for poor contact. Not just at the first block out of the stator.

I am a fan of keeping such things as regulators & rectifiers standard.

Brian Cairns:
Ok thanks all and will check and get back to group.
Got a motorcycle spark for this Friday.
Cheers

Brian

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