I can't leave well enough alone. I don't know whether increasing or
decreasing the control potentiometer's resistance lowers a Jet VS mini's
speed. I wonder if a fixed resistor in either series or parallel with
the pot would lower the speed without ruining the motor or VS control
electronics. Any experience or advice?

I've thought about adding Rube Goldberg smaller-motor/bigger-spindle
pulleys, but there's not much shaft or head casting space to mess around
with. The integral motor makes a clutch or epicyclic system
impractical. Replacing the ac motor on my 'pulley-jet', even with an
inexpensive Vega dc motor system seems wasteful.

Actually neither variable nor much lower minimum speed seems important
with the size and kind of things I turn, sand, polish or drill on my
Jets. Tweaking never seems much use and whatever pulleys are belted, I
seem to turn the pot either all the way up or down. So how come I prefer
my VS when I rarely change pulleys on either lathe? Probably it says
something about sloppy technique.

I guess using a different speed control resistance isn't workable or Jet
would have done it. "Where ignorance is bliss, tis folly to be wise",
but I can't help wondering why Jet opted for a 500 rpm minimum speed.
To keep costs down? To keep power up? Not asking us? I can't argue
with success and out the door as is, the Jet mini is a huge success.
What to do? Likely nothing. Arch

Fortiter,


http://community.webtv.net/almcc/MacsMusings