9 track tape drive motors - suitable for a go-kart?
Paul_Koning at Dell.com
Tue Aug 5 10:31:43 CDT 2008
>>>>> "Brad" == Brad Parker <brad at heeltoe.com> writes:
Brad> This has only a little to do with classic computing, but it
Brad> seems like it could generate epic amounts of email, so what the
Brad> Does anything know much about the construction and capacity of
Brad> a typical 9 track tape drive motor? Like the big 1 foot x 6"
Brad> tubes which I've seen a kennedy or DEC drive?
Brad> I don't know anything about how they are constructed, but I
Brad> assume they are high RPM and high torque. And probably some
Brad> sort of DC stepper.
Brad> I have a racing go-kart frame which is currently missing a
Brad> motor (a CRG if anyone cares). It occurred to me that it might
Brad> be fun to grab a large number of high capacity batteries and
Brad> somehow rig one of the tape drive motors to the live axle. I
Brad> assume via a reduction gear and chain.
I believe they are servo motors, not steppers. Yes, pretty high
torque. Not all that high RPM for the reel motors, higher for the
capstan motor (if you're looking at vacuum column drives with
start-stop capstans, as opposed to streaming drives, or drives like
the 360-era IBM ones that had continuously turning capstans and
solenoids that would push the tape against the capstan).
I would assume they only a few hundred watts if that -- considering
that they are run from low voltage supplies (12 volts or so) with
drive transistors that are likely to be good for order of 10 amps or
thereabouts. Not bad for spinning tape drive parts, but probably not
good enough for a go-kart.
Maybe Tesla has some castoffs? :-) Now *that* is a high power
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