The bearing motor

[PiCéd]

I hope to be wrong, but if there were two separate devices in series on the same circuit I do not think one of them would turn as fast as if there was only one on the circuit and with the same value in amperes.
Especially if it's half as fast.

[minnie]

   Silly Tinman,
                   burning PCDD's in the confines of his shed.
    Also looked like at one point he was running a high speed
    rotor without bearing caps?
    Please take care Tinman.
               John.

[Magluvin]

Glad you popped in Mag's,i was hoping you would.
Here is the first run with the bearing motor.
It dosnt seem to go to well at all on 30 amp's  I have a feeling that it is the aluminum pully upsetting the magnetic fields some how  I also found it odd that the pully got warmer than the bearing housings.

https://www.youtube.com/watch?v=ZkrJ_uI9nWs

Hey Tin

The bearings in Roberts vid seem larger in diameter. Maybe that is the difference in performance here.    That is a 'maybe'. Since you have said that the pulley was warmer than the bearings, its possible something else is happening to make it turn.

Ive put aside the issue with the idea of current flowing through one bearing differently than the other, being that since the thing will go in either direction, so the bearing current direction should not matter.


How about no pulley? That would narrow things down a bit as to what is happening. If it spins faster, then most likely the pulley is not an actor in the motoring going on. or how about a short axle shaft and bearings closer to the pulley, or just closer to each other.

I have a large bearing from a car belt tensioner ill try some things with. It has been cleaned out and worked in with graphite. So it should move with little effort. These are roller pin bearings.  Im just going to work with the bearing alone first.

Neat stuff though. TK made a vid of one a while back.

It would be good to fully understand the function.  Like, could it be possible to have magnet spheres as the balls in the bearing and if we give it a spin, would it keep on going?  Imagining the fields around the balls as current flows through them, it would be difficult to create a magnet as such.  Just thinking though of the possibilities.

Mags

[Pirate88179]

For some reason, I think this is like a homopolar motor except, there is no magnet.  Unless the shaft is acting as an electromagnet somehow?  I think the bearings are just passing the energy through to the shaft and the balls in the bearing are nothing more than contact areas which allow the current to pass to the shaft.

Total guess on my part though.  Very cool motor Tinman.

Bill

[shylo]

Nice set-up Tinman easy to switch out rotors.
Could you mount 2 magnets around the outside of the armature ,the poles lined up with the legs of the coils wound on it , put some brushes on the commutator, see what comes out?
Also I liked the way you tested for current.LOL.
Great vids thanks.
artv