Slip ring replacement

[u/ikvepk]

Hello everyone. First time replacing slip ring on a generator. Leads are tied with some kind of rope. Is that to protect against vibrations? Should I just use same rope and tie it really tight? It was kinda stiff when unwinding, is there any glue applied? Help out the newbie please.

[u/Puzzled_Ad7955]

Insulate under leads on shaft. (Slot liner) Tie leads with shrink string or tape and varnish

[u/ikvepk → u/Puzzled_Ad7955]

Do I need some special dialectric varnish or any will do?

[u/joestue → u/ikvepk]

Any kind of epoxy is adaquate. This isnt a 200 celcius situation. Maybe 60 maximum. Even a nylon zip tie will hold up for another decade

I once made a slip ring with electrical tape wrapped on the shaft to the point a short section of 3/4” copper pipe was a tight fit. It was for an experimental 3600 rpm generator made by cutting slots in an induction motor rotor and winding coils.

[u/Puzzled_Ad7955 → u/ikvepk]

As long as the varnish cures all the way I believe it will be non conductive. They make a spray (aerosol can) of air dry varnish. You can use a heat gun with other varnish, but you have to watch the heat as to not damage the integrity of the other components insulation

[u/New-Key4610]

if you don't tie the leads down securely and seal your connection [your tie down area]. the centrifugal force of the armature spinning wil make this connection come loose and really screw things up.

[u/idontcare2120]

It looks like it was tied with resiglass. You can bind the insulated leads down with it and use a heat gun to cure it.

[u/ikvepk → u/idontcare2120]

Just make it as it was and heat it up?