RE: Hard Drive Motors, RSGs and Stuff

["Christopher Boden" <chrisboden-at-hotmail-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Great idea! I have a permenantly twisted finger from an old Tascam 16 track 
biting me a few years ago :) Those motors have a ton of torque, but no sync 
(that's why we have capstans and pinch rollers)

The drives off of the AS-400 we tore apart used regular 220 input to the 
drive itself and the power supply for the motor was at 110 so direction 
isn't an issue there, but the BIG ones I can remember hearing about. I was 
born too late for that though. :)

We have made a great ASRG from a pair of SUPER efficiant 0-50 VDC motors 
scrounged from a "Washing Machine" IBM tape drive. Also in this drive, the 
Capstan motor is a VERY unusual thing capable of incredible speeds and may 
be interesting for light duty in a high speed ASRG. It spins faster than a 
dremel and has usable torque, but not too much.


Original poster: "Basura, Brian" <brian.basura-at-unistudios-dot-com>
>
>The old disk drive motors Chris mentions would work great but they are a 
>bit
>big (90lbs. if my memory and back serves me correctly). The only other
>problem is most were 3-phase (more than one tech had a head crash due to 
>the
>platters spinning backwards)...
>
>If you want a variable speed RSG then get one of the DC Reel motors from an
>old reel-reel computer tape drive. These things run from 4v-24v and have
>tons of torque.
>
>Regards,
>Brian
>
>-----Original Message-----
>From: Tesla list [mailto:tesla-at-pupman-dot-com]
>Sent: Monday, July 17, 2000 4:01 PM
>To: tesla-at-pupman-dot-com
>Subject: Re: Hard Drive Motors, RSGs and Stuff
>
>
>Original poster: "Christopher Boden" <chrisboden-at-hotmail-dot-com>
>
><snip>
>
>If you do a little hunting, try to find an old AS-400 mainframe or 
>something
>
>similar. They have >100LBS hard drives that take up like 8U rack spaces.
>These drives work on 240VAC and the drive motors will spin happily on 110
>and have there own power supply units. We have tinkered with this idea for 
>a
>
>while. With one of the large drives it should work. The plattens are about
>14"dia and have tons of inertial mass. The motors are VERY powerfull and
>maintain a rock-solid RPM and will live just about forever.
>

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