Jet VS Mini - Reversible?

"Ron Williams" wrote: (clip) the answer is, "Sure. Just figure out which two wires to reverse" (clip) ^^^^^^^^^^^^^ To reverse a DC motor, reverse the current flow in either the armature or the field (but not both.) If it uses perrmanent magnets for the field, then reverse the armature wires, which should be easy, since they will the the same as the input power wires to the motor.

Martin, I had asked re reversing both JML1014 & JML1014VS motors on two turning groups and got what the little boy shot at.

Jet technical help recommends against reversing both their ac & dc motors because of excess heating. Your surmise seems logical to me, but perhaps the motors could be run in reverse for short periods of sanding, but would be risky for long periods such as 'right side' turning.

FWIW, I was told that a schematic for the VS can be seen at Jet's consumer woodworking tool site -> manual->parts. WebtTv & I don't seem to find it and it's not in my owner's manual.

If someone here has reversed these motors PLEASE respond. Arch

Fortiter,

Assuming one could reverse them, why would you want to do such a thing? A faceplate or chuck could come loose and back off the lathe... I don't think that would be a very pretty site at all....

Ron found the schematic site. Maybe he will post both PDF & HTML formats (pretty uptown technospeak for this WebTVer!)

Mark I'm not sure if your question is rhetorical or a query for info. If the latter or maybe for somebody else:

Reverse can sometimes improve sanding or polishing and clean up 'laid back' fibers or smirched finishes. Turners who use (outmoded ,G.) lathes with fixed beds or headstocks can sometimes hollow easier by reverse turning on the 'other side' of the lathe. You can see the wall at 2 O'clock better than at 10 O'clock without contortions and leaning over. At least, in most time zones. ;)

Many fixtures with a Morse taper can be secured with a draw bar and often the tail center can add security with reversed rotation. I certainly don't recommend it, but a non-aggression policy re cuts & scrapes doesn't usually loosen faceplates. Which of you _do or _don't reverse your lathes? Why? Why not? Sometimes? Often? Never? I expect and not just hope for some answers. That includes lurkers jumping in. If one fool can post to rcw, another can. Arch, COC 1st.

Fortiter,

"Martin Rost" wrote: (clip) running in reverse may affect the cooling of the motor.(clip) ^^^^^^^^^^^^ The cooling fans on all motors I have examined consist of a set of radial vanes. The air flow is induced by centrifugal force, so air coming off the outside of the impeller is directed through or over the motor. Reversing such a fan will not reverse the flow, so cooling will not be affected.

Now, if we extend the system modification to include speed control, then cooling will definitely be an issue.