[drbob]

Re: WFF2001 Commutator wear – too much?

After some thought I’ve decided to leave it alone.

I believed the motor was sparking due to the crackling sound coming from the machine as it turned – however that seems to have stopped now (I think it may have been a symptom of the brushes bedding in). I’ve since run it with the back off and could see no sparking.

When I went to pick up the comm stick from a local carbon brush manufacturer the kind gentleman there took a look at the above photo and recommended that unless it’s sparking a lot, I leave it be.

Given my limited knowledge of these things I’ve deferred to his judgement. I also took one of the brushes out and it seems to be bedding in quite well (smooth and shiny over 95{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} of it’s contact edge, small chip in one corner)

[drbob]

Re: WFF2001 Commutator wear – too much?

Thanks for your reply.

Should I be looking to run the motor on the bench to properly clean it with a comm stick, or would manually rotating the shaft whilst holding the stick in place be enough?

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