>
> Just so happens that I got one Friday.  I was about to tear it apart
> just to see how it worked, but I'll restrain my curiosity and look at a
> diagram or something.
> It works on the order of the rotary engine, has 3 or 4 (can't remember) vanes on an eccentric shaft and as they spin, they move in and out like large apex seals and in a sort of elliptical orbit. Don't know why they don't recommend lubrication, there is definitely friction to the side walls although the vanes seem to be made of some type of plastic like phenolic.

> I have no idea how good it is.  Just noticed that it pull your tongue so
> hard it hurts when you spin the pulley.
>
> Ernest (No. I didn't test the pump that way.  Just joking guys 8*)
>
Keep me in mind, if Kelley Troyer doesn't have one.

Wendell