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Is Direct Drive Really Better?

I've been reading and hearing more and more about the superiority of direct drive because it drives the platter rather than dragging it along by belt. It actually makes some sense if you think about cars. Belt drives rely on momentum from a heavy platter to cruise through tight spots. Direct drive actually powers the platter. Opinions?
macrojack
drubin
3,285 posts
 
Macrojack, you are one fine gentleman.
zaikesman
3,017 posts
 
Dan, I wrote this dreadfully huge post disagreeing with your presumption that static inaccuracy in baseline speed is more of a factor than dynamic micro-speed variations. I don't want to post it the way it is, so I'm just saying so, and we'll see if I ever elaborate ;^)
drubin
3,285 posts
 
Then send it to me in email. I'm very curious to hear what you have to say on the subject.
mint604
59 posts
 
I use a SUPERIOR belt drive mechanism. under the platter a large 10lb. live rat (rodent) runs on a BELT, the heavy 50lb platter (and three ball govenor) does indeed smooth out any speed irreglarties. There is NO measurable rumble. Completely independant of powerline noise. Feeding and clean-up are manditory.
macrojack OP
1,303 posts
 
Mint604,
You bring up an interesting point. All (4 now) drive systems require some kind of maintenance and I suppose it should be a condideration in these comparisons. All the other motors need lubrication and yours requires nutrition. The IW has the most moving parts and would presumably be the highest maintenance system. BD probably only ever needs a new belt although I guess bearings and springs could also wear. With DD the only issue beyond lubrication would be the potential for motor failure and that would be fatal I imagine to a vintage table. Does your rat work quietly?
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