Spring Generator Motor on YT.

[Magluvin]

Interesting but

Hey Luc

They look like bearings with the seals off and maybe cleaned of grease to reduce viscosity to run more freely.  See my prev post.

It does look like it could hold a motor in those tubes, or it could just be bearing holders. So without knowing for sure, we can 'assume' one way or the other.

It is an interesting fact that the crank most likely sees less pressure pushing down on the farther end of the spring, and the spring should have more force pushing up on the upward swing of the crank as that area of the spring is closer to the spring base. I had to go back and look again after I had those thoughts and see if the wheel was being spun the right way, and it is.

And if resonance of the spring has something to do with it, it sure looks like the adjustment of the weight toward the spring base would raise the freq, and when he did, it spins at a faster rate.

Mags