I ran two clean tests with cavity mounted CW and CCW.

What looks like thrust on the first sight turns out to be a parasitic force that turns the platform always in the same direction :(



So it must be some current or thermal effect in the system. My guess are lorentz forces.

I don´t know how to get rid of this effect, it will make measurements really hard.

I could compare the differences between the ON/OFF phases of the two tests to get some clues, but because the baseline is always fluctuating it´s hard to see.

And the baseline also changes when the cavity is turned around due to the different mass distribution on the platform (magnet gets realigned a little and causes slight position change?)

Do you have any suggestions?

X-Axis: on/off phases, ca. 30min each

Y-Axis: platform angle in 1/100°

Means of the first graph: 11563 11743 11554 11569 11644 11723 11506 11724 11589 11814 11683 11767 11525 11710 11512 11591

and of the second graph: 11456 11727 11605 11772 11680 11894