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Very cool question. Without having any rational justification to make any educated guess I would pull idea out of my ass – just because the idea make sense to me.

If I make a massive palter I would go for very tall vertical shaft to minimize the platter’s latitude bearing. As the example might be taken the EMT 927 with a long tail below – I love the idea. However the longer shaft, the more shaft surface the more tension in the shaft - so it should be balanced somehow.  No ball bearing would care >150poinf, unless you want to fix it each two years. So I would use some kind of other methods – air or magnetic. But there is a ketch in it. I still believe that the platter should not be decoupled from the base – I have written about it in the beginning of the thread. A platter should be grounded, not electrically but mechanically and it should have path of mechanically ground. So, if I go for an ultimate solution then I would suspend the platter with air for insane in order the air to care 95% of the platter mass. Then I would have the ball bearing that would care the reminding 5-10 pounds. Sure when the platter is not spinning I should be not lower to the flimsy bottom bearing but somehow maintained in a lifted position.

Rerurn to Romy the Cat's Site