IS THIS A REACTIONLESS DRIVE OR A PERPETUAL MOTION MACHINE?

[George1]

1) Please have a look at the two links below:
https://www.youtube.com/watch?v=xX14NK8GrDY
https://www.youtube.com/watch?v=zPqEEZa2Gis&ab_channel=IthacaCollegePhysicsIthacaCollegePhysics
2) The second link suggests another possible method (among many others) for reducing of friction (inside the zigzag channels in the first link above) practically to zero. The key component of this method is liquid nitrogen. The latter however proved to be extremely cheap -- only $ 2.00 per liter.
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Looking forward to your comments. 

[nix85]

George, stop the disinformation.

[nix85]

As for reducing friction, electropolished stainless steel
+ low viscosity grease is the best.

[nix85]

It is not just back torque. He said device jumped in the air then back down.

Back torque can just lift one side and sink the other, NOT propel whole device up.

But this configuration is no good for reason already illustrated. Two points connected
by a spring will clash in straight line pushing the pivot down.

[nix85]

There is a workaround, using springs in different way.
Key being that springs here act purely in horizontal way.

Again, this is just for demonstration of the basic principle
which can be demonstrated without springs as well acting
on the axis.

This is of course not a solution for actual propulsion system.
There are better solutions, i already shared water one,
you did not recognize it. There is an even better one,
not mine idea, i am not sharing that one.