tape drive motors

Thanks guys!
I really haven't decided yet. I have a lot more iron that I have fire so
wanted to get an idea of what they would do in order to make the best match
possible. Right now, I am assembling a 10 x 54 Atlas lathe bought on "Smith
Credit" (one part at a time on eBay when I could spare the money), have a
pretty good sized antique horizontal mill and am building a small vertical
knee mill. Hopefully, the vertical will wind up CNC. If adequate, they could
provide the main power on two of the three.

I was a little bit shocked to find these motors were plain old two-wire
motors with no encoders or obvious means of control. I figured the 5/8
shaft meant they made some torque so probably could best be used for power
instead of control. If they were not up to snuff for the three main tasks, I
still have plenty of needy projects left :o)

WDSmith

> WDSmith wrote:

in quest of some info on the old Amtek/Lamb Electric 50 volt DC motors used
in the old tape drives. I have a couple of them and hate to let them
languish when I have plenty of places to use them.... But, I need to have
some idea of what they will do and what kind of power they need to do it.

>>Can anybody help? Reply off-list to mediasmith@... if you want to

minimize list clutter.

>>
>>
>
> No, this is actually ON topic for a change. These motors are probably

quite good for most purposes.

> They had a little higher armature resistance than I thought was a good

idea for commercial use on

> a Bridgeport Series-I size machine, but will almost certainly work fine in

hobby use even on that

> size of machine. These motors were wound for low RPM, high torque use,

which is a bit rare

> in servo motors, but ideal for CNC'ing milling machines and lathes.

> I think some people have used these with Gecko servo drives with good

results. You could also use them

> with Westamp, Servo Dynamics or Copley Controls servo amps, and an

analog-out servo interface

> board like the Servo-to-Go or my PPMC board set.

What sort of machine are you planning to use them on?