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

Dear Geoch: Agree, speed stability in the " short time " is the main problem/target/issue for TTs and what we choose on it.

DD makes " things " really well on that subject. You DP-80 is a good example, I can't talk on the Thorens one because I never heard it in my system but I take your opinion as " mine ".

Regards and enjoy the music,
Raul.

Dear Geoch: I'm with you, the very " short time " speed stability is more important that that long year.

IMHO this characteristic in a TT is " elusive " in some BD designs and less in a DD one like your DP-80.

Regards and enjoy the music,
raul.

Dear Raul,
My mistake to expose such a dangerous post here.
I think Dover explains this precisely at his 05-04-11 reply.
Please lets pretend that the case has closed by that post, as there is not much to be said further about and we should stop walking in this mine field. Too many of us have invested great deal of money having great expectations and no more than perhaps a handfull of us can realise and accept the fact.
I apologise and I wish to stop this discussion here.
I'm sorry.

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.