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slip rings
By Bruce Downunder, Section Homebrewed Electricity Posted on Thu May 8th, 2003 at 03:46:41 PM MST
slip rings -how I made mine.

Slip Rings are resistive--- just you measure the difference -you'll be surprised. I'm saying around 1 Ohm . But , if you go away and want piece of mind , way to go . I made these out of copper sewerage pipe 3 inch. epoxied onto base of ford 4 cyl front hub ;centralised by eye with chop sticks to hold them and filled with car bog. Brushes were old black and decker portable tool type from local hand tool repairer for nothing --he had a bucket full. wiring --soldered inside the 1/4 inch rings of copper -6mm gauge.. I have three ,but next time will be ,say six or eight. -what the hell , it's only a hobby and I will want to run a tacho ; pwm power to get the mill revolving on light days --instead of cursing it !-- and sometime a series /parallel Cct and maybe a electric brake mech for shut down . have Fun -it's all part of living . Bruce.

slip rings | 4 comments (4 topical, 0 editorial)

slip rings (none / 0) (#1)
by Bruce Downunder on Thu May 8th, 2003 at 03:59:49 PM MST
(User Info)

forgot some things I installed two brushes per ring @ 180 degree's. that way --as in my case ,before I had a lathe -- you get at least one brush contacting all the time -hopefully. check out your runi-run out with a fixed point ,like a screw driver shaft while you turn the hub. Now ,with a lathe , you simply turn the high spots off -carefully though ,the pipe wall thickness determines the amount of run-in / run out you can tolerate. Also, periodically check for tightness of the little securing screws for the brushes-use locktite and nyloc nuts. Mine came loose, after a year, dammed if i could work out why no current !! took a packet of asprin and two days to discover the above fault was responsible. And clean the rings with rag and brasso occasionally-at least it will look good !! bye bruce.

Very Nice (none / 0) (#2)
by TomW on Thu May 8th, 2003 at 04:14:04 PM MST
(User Info)

Hey Bruce;

They look to be on a par with your usual fine workmanship. Great use of easily obtainable components!

Trying to figure out how you get voltage out of that wheelstud to those cables ;=).

See you on IRC.

Cheers.

TomW

"Education consists mainly of what we have unlearned."--Mark Twain

Brushes (none / 0) (#3)
by RobC on Thu May 8th, 2003 at 10:36:38 PM MST
(User Info)

If you use the brushes that come out of car starter motors I think you will find almost no resistance at all. They have a very high copper content and are designed to handle very high currents. Nice Job!

slip rings (none / 0) (#4)
by ADMIN (info74 at otherpower.com) on Tue May 13th, 2003 at 11:44:48 AM MST
(User Info)

will add this thread to the renewable energy FAQs!

(yes, they are in progress)

ADMIN

slip rings | 4 comments (4 topical, 0 editorial)

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