Re: Sync Motor Wanted

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Arpit Thomas" <arpit-at-inzo-dot-org> 

Terry, If I can get this process working well, I might be able to make a 
few for people. I have a grinder and a vice, and a bit of time. If I got a 
job I'd be getting 12 buck an hour and not really enjoying myself, so its 
not a big loss to me if I make a few. I do have my final exams coming up so 
I cant spend all day on it though!

*********** REPLY SEPARATOR  ***********

On 17/04/2004 at 5:44 PM Tesla list wrote:

 >Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>
 >
 >Hi,
 >
 >Golly!  My 4" Makita angle grinder can do them a bit more "artistically"
 >in
 >like 30 minutes!!  The grinder has zero problems with the laminations but
 >the aluminum in the casting can clog the grinder a little.  However, I bet
 >with practice we all get a lot faster ;-))  The only thing that slows me
 >down is the rotor gets hot so I let it cool off.
 >
 >Thanks for sharing your experience.  Indeed, it appears that true machined
 >motors might be too pricey ;-(    However, for what a machine shop would
 >charge, you can get a big Harbor Freight* vice and a nice Mikitia
 >grinder...  Making sync motor is not rocket science:
 >
 >http://hot-streamer-dot-com/TeslaCoils/Misc/syncmot.zip
 >
 >http://hot-streamer-dot-com/TeslaCoils/Misc/sync_motor.txt
 >
 >BTW - Little milling machines cost just as much as big ones in the long
 >run
 >=:O  I wish I had more room...  But I can pick up the little one and stick
 >it the trunk of my car ;-))
 >
 >*Sorry to all the machinists for mentioning that place ;-))  I doubt I'll
 >be bumping into Ed Wingate there :o))  Just think of it as a machinist's
 >amusement park :-))))  And yes....  Their cheap twist drills really will
 >"un twist" :o))  I did get a dial caliper from there the other day.  You
 >may be confused!  Terry springs $250 for a Starrett caliper on Monday and
 >$19 for a Harbor Freight caliper on Tuesday??  The Harbor Freight on is
 >for
 >(quite literally) underwater use ;-)))  They all have their nich...
 >
 >Cheers,
 >
 >         Terry
 >
 >At 12:09 PM 4/17/2004, you wrote:
 >>Hello All,
 >>
 >>I had good luck cutting a rotor manual on a Bridgeport with a 2 flute
 >Ti-N
 >>high speed 3/4" cutter. Considering the 2 hours machine time (was being
 >>cautious I suppose on the expensive motor) I'm not sure someone could
 >sell
 >>these at a low cost and avoid a loss.
 >>If anyone goes the milling route, I recommend climb milling to avoid
 >>ripping out the laminations.  :-)
 >>
 >>I don't think steppers will have what it takes to run a good RSG, they
 >>just have too many high-speed slip problems...
 >>
 >>Best of luck,
 >>Gregory
 >>
 >msnip....