Help with crazy motor project please

On Wed, 20 Jan 2016 06:19:38 -0800 (PST), George Herold
<gherold@teachspin.com> wrote:

On Tuesday, January 19, 2016 at 2:31:25 PM UTC-5, et...@whidbey.com wrote:
On Tue, 19 Jan 2016 05:50:32 -0800 (PST), George Herold
gherold@teachspin.com> wrote:

On Monday, January 18, 2016 at 5:26:49 PM UTC-5, et...@whidbey.com wrote:
On Wed, 13 Jan 2016 23:00:14 +0000 (GMT), Terminal Crazy
Terminal_Crazy@sand-hill.freeserve.co.uk> wrote:

In article <pmjd9b9d2lkd8nplo3tqrokrhn4lq6j41l@4ax.com>,
etpm@whidbey.com> wrote:
I am also considering making
the lathe a foot operated machine. To do that I need to find a 2 foot
diameter, 5 inch wide, three step flat belt pulley. I am still looking
for one, even one I can modify.
Eric

Really ?
You have a lathe sat there. Machine one. Isn't that what they do best?

Mitch
I don't have a lathe with a 2 foot swing so turning a pulley that big
would be problematic. However, I may have a solution. I could mount
the pulley to the 4th axis on my big mill. With the 4th axis
horizontal and a stationary lathe type tool in the spindle I could use
the mill like a vertical lathe. I might do this if I get crazy enough.
Eric

Hi Eric, Re: turning a big diameter.
This is probably a silly idea, but I needed to wind some big magnetic field coils.
I had a wood lathe and I was able to turn the head around so it stuck out the
back end. (There was some "creative" pulley arrangement to get it power.)
I then wound some ~2' diameter coils... And yeah, you'd
have to rig up some sort of tool rest also.

George H.
I have a wood lathe that has the swivel headstock. It is meant to be
turned around for large work and a floor mounted rest is indeed needed
for turning the work. But there is no way I would attempt machine a 2
foot diameter cast iron pulley with the machine. If I was making a
wood pulley I would do it though. And I have thought about making a
wood oulley and adding lead weights.
Eric

My mistake, I thought you were making a wooden pulley.
You need the weights because you want the pulley to be a fly
wheel too?

George H.

The lathe was available from the factory with either foot drive or
overhead drive. For foot power the large diameter pulley was indeed a
flywheel. It was common practice when foot powered lathes were being
built to have an apprentice provide the power while the journeyman
made the parts. Anyway, my lathe was sold with the overhead sheave
(pulley) option but the legs for the lathe were also machined for the
foot powered option. It appears that the only difference between the
two options is that the foot powered models came with the treadle,
large sheave, and the connecting bits while the overhead drive option
was the same lathe but missing the foot stuff. Apparently the overhead
drive option included the overhead sheave mounted on a short shaft and
a couple bearings to support the shaft. I gleaned this info from
pictures of advertising in various publications.
Eric