Quote from: happyfunball on March 03, 2010, 11:32:30 AM
I think the rest are aware of the fact that a cam requires energy input which can't be extracted from a spinning SMOT array.

A cam just have to overcome the friction with the upper piece without slowing down the wheel too much, just a little...

The cam is just spinning with the wheel, and the only "trouble" the cam will face is friction with the upper piece, when the cam touches it in order to lift it.

It's only a matter of reducing the friction between the cam and the upper piece during the brief moment that this pieces are touching each other. If friction is minimal, the wheel will slow down very little. And the acceleration caused by the magnetic forces during the rest of the rotation will compensate for that little slowing down.

I believe there is a real possibility that it could work.

Quote from: Rapadura on March 03, 2010, 12:24:41 PM
A cam just have to overcome the friction with the upper piece without slowing down the wheel too much, just a little...

The cam is just spinning with the wheel, and the only "trouble" the cam will face is friction with the upper piece, when the cam touches it in order to lift it.

It's only a matter of reducing the friction between the cam and the upper piece during the brief moment that this pieces are touching each other. If friction is minimal, the wheel will slow down very little. And the acceleration caused by the magnetic forces during the rest of the rotation will compensate for that little slowing down.

You're forgetting that there's no real torque here. It's just spinning on bearings. Any load, you hit the wall.

Quote from: happyfunball on March 03, 2010, 01:31:33 PM
You're forgetting that there's no real torque here. It's just spinning on bearings. Any load, you hit the wall.

Any load? What you mean with "any"?

Take a bike and lift the front wheel so that it can rotate freely. Give a little push to the wheel, leaving it spinning slowly. Then, take a small toy car and put one of the little wheels of the car in contact with the bicycle wheel for just 2 seconds and see if it will stop the bicycle wheel... It won't.

With a very light plastic platform for the stator, and with the cam surface covered with rubber and the little wheel of the lifted platform also made of rubber, friction will be small. It won't stop the flywheel.

Quote from: Rapadura on March 03, 2010, 02:32:20 PM
Any load? What you mean with "any"?

Take a bike and lift the front wheel so that it can rotate freely. Give a little push to the wheel, leaving it spinning slowly. Then, take a small toy car and put one of the little wheels of the car in contact with the bicycle wheel for just 2 seconds and see if it will stop the bicycle wheel... It won't.

With a very light plastic platform for the stator, and with the cam surface covered with rubber and the little wheel of the lifted platform also made of rubber, friction will be small. It won't stop the flywheel.

A bicycle wheel is not working against magnetic forces. A flywheel only has temporary torque. Rickoff has an extremely low friction, moving stator setup. Couldn't get it to work.