Skeletal vs Plinth style turntables

Dear Dover, No.

This armpod definitely moves

That is a 50cms/dyne x 10 (-6) cartridge on a JMW 12 tonearm.
Theoretically it has no business on this tonearm and in fact this cartridge was not playable (too high compliance) when it was played on the same arm on my full plinth TT.
Just saying...make what you want from it. I believe the Symposium jrs, managed to sink resonances.
The result here was music that was quite listenable.
A long time ago. My son 16 at the time is the camera man and gave me all of 10 minutes of his time to put cartridge on and do the test.
Could not find a needed cartridge bolt washer so I improvised. Pls excuse the crude setup of cartridge.
I now realize I should of just set the camera on the armpod and left it there.

Richardkrebs "The song, I got U BABE".
My dreams, shall we say, are usually more exciting in content.

Yes Richard, but I rarely remember the good ones after I wake.......the nightmares ....tend to linger.

I Got You Babe

the song has some significance for me.
I was 3? at the time, but I can still remember seeing this on my parents little circular screen black and white tv for the first time.
I believe their show made a lasting impression on me. I say this because when my wife and I got married we went away to Palm Springs. Sonny had a restaurant there. We made a point of having dinner there one night and having our picture taken with him.
Charming fellow. We were saddened later, not sure now how much later it was now after we saw him, to learn he had died hitting a tree while skiing.

Thanks for the number crunching.

Chris.
We all have songs lurking in our past that in some way stay with us.

Re the number crunching.

The figure given was for a perfectly inelastic collision. If the collision was perfectly elastic the new train speed would be around 99.99996 KPH. 0.00004% speed reduction.
It just goes to show that little things can influence big things, even if they are 10 million times lighter.

cheers.

Halcro and Dover are correct although both muddy the waters slightly.
Halcro, by explaining the principles of structural forces necessary to move a sufficiently large armpod and Dover by mentioning the speed-correction circuitry of a DD turntable.
Neither point is relative to the Timeline and a moving armpod.
A moving armpod will be displayed by the Timeline on a belt-drive turntable and idler both without servo control.

The mistake being made is concluding that the Timeline is measuring rotational speed.
It is not.
The rotational speed is pre-dialled into its algorithm so that the flashing strobe merely confirms any deviations.
The Timeline device actually measures 'movement' to a microscopic degree. That is why it is able to visually display the effects of stylus drag as 'movement'.
As Dover points out, in a closed-loop system, any movement of the dependent particles in relation to another will be displayed by a device designed to detect movement.