Why does the VPI motor thump


Why is it when I turn off my VPI motor I hear a thump through the loudspeakers? The only direct connection to the stereo is the belt.
last_lemming
@Stan (Stringreen) -- does your Classic 3 motor get very warm to the touch? Been playing my TT. It occurs to me that the new 300 rpm motor gets pretty warm to the touch, actually quite warm. The old 600 rpm motor, while warm, did not get as warm as the 300 rpm motor.

I'm trying not to use the word "hot", but the motor almost feels hot after use.

Any thoughts or comments??

Thanks
Bifwynne.....Actually, I have a modified Superscoutmaster rim drive.....doesn't get warm at all. Never heard of an overheating complaint from others I know who own a Classic 3
I had 2 VPI's and they both did that. I now have a Basis and it never does it. Simple answer: Bad design on the VPI's.
I don't necessarily think the tables are a bad design because they have a turn on / off thump. I usually judge a component by how it sounds when it's used as intended.

The thump is related to a capacitor required in the circuit. When used with a variac, SDS or other front end component to manage the voltage during start-up and playback, there isn't any problem.

But the design could be improved when not using some kind of voltage management device.
Bpoletti, with all due respect, I had an SDS on my Classic2 and Classic3 and there was still the same sound so I'm not sure what you're talking about.

Secondly, I didn't mean to imply that there are no good qualities to VPI tables but it seems reasonable to assume that if a person is spending thousands of dollars on a TT that they shouldn't have to mess around muting the pre every time they what to spin an lp, it's ridiculous. Considering virtually every other company seems to have figured out how to get the platter going without this obvious flaw, and it is a flaw no matter what VPI says, a company as wealthy and hyped as VPI could correct this, if they cared to.