EMT 927 vs. Micro Seiki 5000 or 8000 - different?

My Kuzma Stabi Ref. has 2 motors driving the sub-platter with an single belt. I check the speed with the Clearaudio
Stroboscopic record with the stylus on the record. I am not
able to see any speed variation. The platter is 8 kgr.
I have difficulty to grasp how, say, 2 gr. stylus pressure
can influence the inertia of the platter. The belt creep I
can emagine by the start of the TT but not as caused by the
stylus pressure when the platter is 'on speed'. Some data
about forces involved?

Dear Nandric: IMHO only an audio myth ( I mean with heavy mass TT designs. ): not proved theory.

I tested ( posted somewhere at least twice. ) that myth not with one cartridge running but with three cartridges running at the same time with no speed minute changes in different recordings and at different position in the Lps: near the spindle, outer tracks and in the middle.

Even, now that I remember, I made other tests where I changed the cartridge VTF using it at maximum ( on its specs. ), I run too a test with the motor switch-off and even with the platter with out " belt/thread " to test its time to stop.
I really made several tests, for different reasons, and the cartridge drag when in playback did not showed influence. Where I detected influence was with out motor/belt and even differences ( tiny tiny very tiny ) due to a diffrent cartridge stylus shape and VTF.

Regards and enjoy the music,
Raul.

Raul,

Use to import Martin Logan/Apogee/Conterpoint/Conrad Johnson/Krell/MIT/Kimber/Quicksilver/Sota/Sumiko/Pink Triangle/Proac/Carnegie/Zeta/Alphason/SME and shop was agent for Linn/Roksan/Harbeth/Onix/Musical Fidelity/Townsend plus probably forgotten a few - about 20 odd years ago. Pre digital hence fairly extensive experience on the turntables from that age. Plus heaps of oddball imports for customers such as VTL, Jadis,Dynaudio etc.
Biggest learning from shop - synergy in system particularly analogue is vital and everyone hears differently.

Dear Dover and Raul, Dover wrote, " My turntable speed never changes so I only check it once a year or so " I am happy to hear that, but the statement is not relevant to the issue of "belt creep" and does not necessarily mean that there is no variation in platter speed at the micro level. However, if you love the sound of your tt, that's all that counts. Pay close attention to piano reproduction. The capacity of a bd turntable to accurately convey the sound of a decaying note struck on a piano is for me a measure of its goodness. Pitch should be unwavering until the note dies below the audible level.

Lewm -

Please define belt creep. I have no slip and no stretch in the belt. I listen to heaps of classical and piano and in my previous posts I have mentioned that piano music often often lays bare wow and speed instability in turntables which is precisely why I dont do suspended decks, rubber or other stretchy belts and direct drive. But what do you actually mean by belt creep.