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Old 20th Jan 2021, 2:28 pm   #16
ex 2 Base
Heptode
 
Join Date: Nov 2009
Location: Scarborough, North Yorkshire, UK.
Posts: 510
Default Re: DC motor rewind help ?

One of the problems with DIY rewinds, is finding a supplier of new copper wire in small quantities. So, keep all wire and weigh it, then add 10/25% as your bound to waste some. Try and remove the windings such, as to obtain the stepping of the slots and spacing of the com connections. Also, modern machine wound armtures don't use slotting, which as a hand winder you would need to protect the wire as you insert it into the slots, so space is a problem. Then there is varnish and stoveing before and after then balance. I notice that modern armature windings are not soldered to the com any more sort of crimp. Not so easy as it looks, I hope I haven't put you off. Ted
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