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Making a slip ring connector | 7 comments (7 topical, 0 editorial)

Re: Making a slip ring connector (none / 0) (#1)
by DanB (danb@*no spam*otherpower.com) on Fri Jul 18th, 2003 at 12:09:29 PM MST
(User Info) http://www.otherpower.com/

Thats nice Chuck! Probably not an issue, but my concern would just be... the possibility of high current overheating it. Probably not an issue, especially at higher voltages, but it would be interesting to bench test the assembly with the highest possible current you'd expect from the turbine for a while and see if things heat up at all. I get surprised sometimes how even big chunks of carbon get pretty hot under fairly low current.

Someone on this board suggested using the brushes from Automobile starter motors... they seem like some kind of copper/graphite substance (or something) -but they take higher current.

I like my "dangling wire" :-) but it might be a problem if I had to leave it for an extended period of time.

Thanks for the cool pictures and good ideas! Be fun to see how it works... bet it works fine.

Re: Making a slip ring connector (none / 0) (#2)
by Chuck on Fri Jul 18th, 2003 at 01:35:26 PM MST
(User Info) http://www.greeleynet.com/~cmorrison

Dan,

Thanks for the comments.

Yes, high current is an issue I'm very concerned with, especially with plastic brush holders (I've seen plastic brush holders melted in motors). That's one reason I went with 2 brushes for each side of the circuit. It would be easy enough to make it 3 or 4 per side if need be, or just find higher capacity brushes like you suggest.

I have a 24 volt system and don't expect this generator to put out much over 20 or 30 amps, about 10 - 15 amps per brush. Still might be too much, I don't know, but I should find out soon.

Chuck
chuck
[ Parent ]

Making a slip ring connector | 7 comments (7 topical, 0 editorial)

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