I took the motors to a local engineering works last week and had the coms turned and the splined shafts turned down to 19mm. Saturday morning I set about milling a 6mm keyway into the shafts. Nightmare job. The shafts are glass hard
. Got there in the end so i'm into scraping out the com segments and replacing the brushes.
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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
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