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RE: Odd Motor Mod...
Original poster: "David Dean by way of Terry Fritz <twftesla-at-uswest-dot-net>" <deano-at-corridor-dot-net>
That would be a six pole motor. Six flats will get you 1200 RPM. Use the
high speed wire and cap off (wire nuts are OK) the other speed wires. If
1075 is the highest speed listed, or the only speed listed, then that will
be the high speed. The other speeds use more inductance (windings) on the
run winding to lower the current and increase the slippage. The high speed
is the only one of interest for sync mod use.
> -----Original Message-----
> From: Tesla list [mailto:tesla-at-pupman-dot-com]
> Sent: Tuesday, February 13, 2001 7:24 PM
> To: tesla-at-pupman-dot-com
> Subject: Odd Motor Mod...
> Original poster: "Mike Novak by way of Terry Fritz
> <twftesla-at-uswest-dot-net>" <acmnovak-at-msn-dot-com>
> Hello All,
> I was hoping someone might provide me with some info on modifying this odd
> motor I aquired. The specs on the nameplate are as follows...
> HP 1/2 HZ 60 PH1 CAP 10.00/370
> V 115 RPM 1075/4SPD
> A 7.9
> But here's where things get sticky... The 4 speed thing. I want to modify
> this thing for salient pole operation, but am unsure on the flats. I'm not
> sure how many/ how big the flats should be. Although the RPM is listed as
> 1075, it has 3 speeds: "HI, MED, LO". What should I assume the RPM is?
> This thing is made by GE and it has some really nice bearings, so
> I'm kinda
> reluctant to scrap it. The shaft is like 5" long with a flat for a set
> screw. I've done 7-9 motor mods so far and this one should be
> easy, pending
> I can figure out how...
> -Mike Novak