----- Original Message ----- From: Horace Heffner <[email protected]> Date: Tuesday, August 18, 2009 7:21 pm Subject: Re: [Vo]:BB motor - surprising experiments
> > On Aug 18, 2009, at 11:34 AM, Harry Veeder wrote: > > > > > > > If you reduced the diameter of the axle would that make it more > > "efficient"? > > Less efficient, because more energy will go into heat. Yes. but wouldn't it allow you to use less current? Determining the minimum current you need to keep the motor turning seems like important parameter to me. (Please excuse me for asking if you have already done this. (-: ) > Thick is > better than thin, solid is better than tube, and short is better > than > long. Aluminum or copper is better than steel most likely. > > > > > > > >> I've definitely nailed down the effect > >> > >> is electromagnetic. > > > > I'd say you have demonstrated a necessary condition but not > > necessarily > > a sufficient condition for the effect. > > > The effect works with magnetic bearings and not with non-magnetic > bearings. That is sufficient to establish the effect is > electromagnetic. Further, a back-emf is produced, which confirms > it > is electromagnetic. How can these facts be if the effect is not > electromagnetic in nature. Heat is totally ruled out as a cause. > I'll try to think of an analogy. Harry
