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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Thread pitch for microphone stand connectors NOPOL
I'm replying to an earlier question that I missed
Ted had asked: I'm planning to build myself a DC motor setup. Did you build yours or is it a comercial unit? The motor drive I'm using is a GE Statotrol Jr, 90VDC, 3/4 HP unit for use with 120VAC line voltage. It performs very well with the Indiana General PM 90V motor I'm presently using. It was problematic with a used PM treadmill motor I tried (rated 7000 RPM, 2.5 HP 130VDC). That motor may have a fault, but I'm not sure.. it was drawing too much current and blowing the 15A fuse in the Statotrol drive. It's a bit of an odd chassis configuration.. an unusually long rectangular board and heatsink. I had an unused flea market electric service panel enclosure that worked well for mounting the drive, relays, low voltage DC power supply and numerous terminal strips for a remote control box I made from a small aluminum enclosure (originally intended as an Apple disk drive enclosure). I've got a KB controller that I plan on using for this machine when/if I get around to mounting it in an enclosure. I started creating a web page for this sort of stuff, but can't seem to keep at it to get it completed. If I can provide any other info, I'd be glad to. WB |
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