Thuchan,
Have you tried the 927 with the plexiglass-plate? That does decrease the weight. Some people say that glass on platters is "wrong" but the studio turntables EMT 927 were delivered for the disc-recording industry as a measurement studio turntable the EMT 927 D equipped with a glass-plate instead of a plexiglass-plate.
When you tap on the plexiglass-plate it is not that solid, a bit flimsy to be honest. Okay it offers the added brake, but know needs that at home??? The total mass of the platter is not that high even with the glass platter plate, much less that our cherished SX8000s. I have from good sources learned that the 1st R80s platter was heavier, that the 927s were even less than the R80 and the last 927s even less.
I would like to talk about a few other aspects that are, from my modest perspective, important.
1) The torque of the motor: This is one 3-phase workhorse and when you attempt to slow the platter with your hand you see how strong the drive is. Do this on a belt drive and.....you know! When done on a Garrard you can slow it quite easy, and other idler drives are in same category. The 927 has a huge torque and power and as such does offer a great control on rotation. Once documented you realize that the 927 offers rotational stability that is amazing, in fact far greater that that of the TT used for the record making!
2) Bearings of the idler mechanism: Look at those bearings and levers...this offers very solid and stable basis for the power and stability of the motor to get to the platter
3) Distance of idler from stylus: Well the 927 was made for 16 records but we only use them on 12 or 10 (those good mono ones!) and this offers another advantage; the stylus is further away from mechanical contact point of the idler and the inside of the platter.
4) Chassis construction: The cast aluminium is a very solid and high mass base for the tone arm. The fact that the motor is mounted on isolation supports prevents it from transmitting energy to the tone arm. The motor is overpowered; the variations in drag generated in the groves do not strain the motor and introduce the potential adverse consequences.
5) The bearing: It is large diameter and very long offering an extremely stable foundation. Apparently the next best thing is a Neumann lathe that the ultra hard core analogue boys use as a TT, your next step?
But to conclude: All of this means nothing in reality. The 927 sounds spot on. Is that objective or subjective? We always attempt to come to rational answers to understand why, I offered some above. The rarity of the 927 (and even more so the R80) make these hard to come by. Many have not been serviced and show the toil of time, I have seen quite a few of those! Thuchan, we both went for fully serviced and as per factory specification machines that work as they were designed, this is the only way to go and it requires a particular dedication. You know that I jumped into the "927" following advice from around the world and from one person in particular with whom I share taste in music, but I needed to experience it in my setting and to my agenda. I am glad that at this stage we agree; that you considered that my ears were a valid enough reason for you to jump onboard...
And "YES" I am looking forward to engaging my ears with your R80 & Lamm etc
Maybe we will have another pair of EMTied ears with us?
The Kondo testing is on the agenda, work for the time being guess this hobby needs funding!
All fun!