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Making a slip ring connector
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7
comments (7 topical, editorial)
revisions
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#7
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by Chuck on Mon Sep 15th, 2003 at 12:52:39 PM MST
(
User Info
)
http://www.greeleynet.com/~cmorrison
After a 70mph storm and a failure of the slip rings shown above, I have a few revisions for this design to deal with higher amperage. The failure was due to sparking near the ring joint, resulting in a melting of the ring and the plastic brush holder melting onto the brush, siezing it in place.
Use solid copper rings if possible. The use of copper sheet may be OK if you can solder the joint and sand it smooth with the curve of the ring. Size can be a problem getting appropriate copper pipe for the rings.
A metal sleeve between the plastic holder and the brush will keep changes to the plastic from affecting the brush's ability to move. Assuming things get too hot. A thin copper sheet might suffice for this.
Larger wires on the brushes should reduce the resistance and thus the heat buildup in the brushes. This unit was passing over 20 amps when it failed.
Chuck
Making a slip ring connector
|
7
comments (7 topical, 0 editorial)
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