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Post by nosubfor3 on Aug 5, 2019 15:47:37 GMT -7
Hey Does anybody know anybody who can center com plates on pancake arms? I have a bunch of NOS motors with off center com plates
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Post by dave632 on Aug 5, 2019 16:45:12 GMT -7
Have not had or not noticed the problem. Are they concave in the center like some I have seen?
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Post by nosubfor3 on Aug 6, 2019 3:16:28 GMT -7
Have not had or not noticed the problem. Are they concave in the center like some I have seen? No the shaft is not centered in the hole of the com plate. |
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Post by dave632 on Aug 6, 2019 11:46:15 GMT -7
I don't know how you could fix that without changing the com plate. I have several old pancake arms that have bad windings. If you want the com plates off some of them I could sent them to you. I wonder if bending the tabs that hold the plate on would help any?
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Post by nosubfor3 on Aug 6, 2019 15:24:09 GMT -7
I don't know how you could fix that without changing the com plate. I have several old pancake arms that have bad windings. If you want the com plates off some of them I could sent them to you. I wonder if bending the tabs that hold the plate on would help any? Bending the tabs is tricky. Once the com plate is centered the trick is bending the tabs back into place.Haven't figured out what type of tool to use to do that. |
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Deleted Member
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Post by Deleted on Aug 6, 2019 18:08:30 GMT -7
I think trying to bend the tabs is not a good idea.
rather, cut the "slots" on the comm plate to better fit the tabs, centering it and then use an epoxy or similar to hold it in place.
I used to cut new "slots" in the comm plate to advance the timing, gently pry the plate off (barely) without breaking wires and super glue it in the advanced state.
not to say I didn't break wires, but had many more successes than failures.
similarly, when trying to advance timing on an inline armature (only the tyco, wizzard and similar style) one holds the shaft in the back where the gear goes and then turns the stacks in order to advance the timing.
done gently this can be accomplished.
you should not try to turn the commutator on an inline armature.
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Post by gnome on Aug 7, 2019 5:34:38 GMT -7
I use a hammer and beat it into place just like truing a pinned crank shaft in a 2 stroke. You'll find you need to hit it harder then you think .
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Post by dave632 on Aug 7, 2019 7:09:03 GMT -7
Never tried that, looking forward to trying it.
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