I have been told that using a AC Drive, you will not loose any torque
at the high or low end of the scale.
I will get some detailed information on this and post it after
christmas.
Jim
--- In southbendlathe@..., "Paul R. Hvidston"
<p.hvidston@i...> wrote:
jwtaylor,
Interesting idea, and I was considering using a 3-phase motor and
vari-drive
I could get for under $100. The problems are torque and price. At
lower
spindle speeds I'm not convinced that there will be enough torque to
machine
large workpieces using a vari-drive. Gear reductions should provide
more
torque than the flat belt can transmit w/o slip.
BTW, who is using flat belts (leather or other) on their lathe?
James Early
recommended (I believe) High-Speed Rubber Belts from McMaster-Carr,
page 827
for $0.26/inch pre-made. Any thoughts from anybody about that? I
called SBL
and they want over $100.00 for a 3/4" x 53" belt and cement kit.
Yikes!
Cheers!
Paul R. Hvidston
Upland, CA
----- Original Message -----
From: <jwtaylor61@h...>
To: <southbendlathe@...>
Sent: Tuesday, December 19, 2000 3:02 PM
Subject: [southbendlathe] Re: Headstock configuration and speed
range
discussion
Paul,
I checked with a local electrical supplier and there are a number
of
nice little AC frequency drive which will give you a variable
speed
control with any 110/220V AC motor. It will also give you
reversing
capablities and they are about $200- 300 dollars.
You can do away with all those counter shafts and jsut still with
one
speed.
