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#2285 06/30/01 01:43 PM
Joined: May 2001
Posts: 378
F
frank Offline OP
Member
what is the best condition for a commutator
a light straw
b jet black
c dull copper
d chocolate
i choose chocolate as we want to see a good commutator film graphite plus copper = brown

jet black was another possibility

dull copper would mean that there was no brush contact or it was new

light straw same as above

i have asked experienced electricains and motor builders who told me they would have picked jet black,dull copper and even shinny copper?

what do you think??

#2286 06/30/01 02:48 PM
Joined: Oct 2000
Posts: 5,392
S
Member
Frank;
i never really considered this finer point, it is very interesting...usually i am called when the 'smell' has differed

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