Working Magnetic Motor on you tube??

[gdr]

Wow! that is huge!

Thought I'd drop out of lurker mode and throw a couple of pennies in.

From that video, it seems somewhat obvious to me that the rotor is pulling at and then pushing against the stator to gain it's motion.  I think that the amount of friction in the stator bearings are probably the most important factor.  If the stators spin too easily, then the magnetic interaction between the rotor and the stator will simply effect the speed of the stator, and have little effect on the rotor.  However if the stator has a certain amount of friction, then the rotor will get pushed around a bit by the stator.

I think the optimal setup would be to have as much friction in the stator as possible, while still being able to sync up AWG with the rotor.  This will allow the rotor to pull/push against the stator without putting all the force of the magnetic interaction into effecting the stator speed only.

Have any of you talented replicators considered devising a way to adjust the friction on the stators to control how easily they spin?

Best of luck all you replicators (no Stargate reference intended).

[ken_nyus]

Won't the dampers play this role, automatically adding in drag when things want to speed up? and at the same time adding no drag at low speeds to allow startup?

[gotoluc]

I have noticed that if the Stator Magnets are 1/2 inch then the Rotor magnets are longer. Look over pictures and judge for yourself ... to me they look like a mm size or they are 5/8 inch long, which could make much difference.

Luc

[gdr]

Won't the dampers play this role, automatically adding in drag when things want to speed up? and at the same time adding no drag at low speeds to allow startup?

I guess the dampers do help, but only after the unit already gets the effect ('the effect' being acceleration of the rotor).  Al said that the dampers are there because the rotor/stator speeds up too much and then loses sync (we should have such a problem ). My thought is that adjusting the friction in the stators may help to get the effect to start with.  I actually think some of the replicators are too good at what they do, and might have trouble getting things working because their stators spin too freely.

[PolyMatrix]

Looks to me like the stator magnets are just above the rod magnets, which would be in keeping with some the conclusions I had while testing out some ideas with magnets. The stator magnet in my theory has its bottom edge just above the top edge of the rod magnet.

Edit Also concerned that whether the rod magnets are precisely cantered. It would only take 0.25mm to be significant.