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VPI Single Motor Flywheel / SDS / Aries 3

I just purchased a new VPI Single Motor flywheel for my Aries 3. I have an SDS. It seems like I get answers a little quicker from this forum than VPI, although I have a call in to them.

Here is my dilemma: When I have the Single Motor Flywheel plugged in to the SDS or the wall outlet, the motor turns the flywheel too slowly and I am several HZ below the 60Hz/33RPM on my SDS. The sound is very slow and clearly under 33 rpm on the platter. The flywheel seems we lubricated and turns easily. The motor is quiet. It's just slow. So slow, I have to turn the SDS up to 65-66 HZ to approach strobe disc accuracy and acceptable sound for 33 rpm. Haven't even tried 45 rpm yet.

The motor is placed within proper distance to the flywheel. It came with two small brown belts for the motor to spin the flywheel and one larger black belt which appears to be the same size as the belt used on the Aries 3 regular 300 rpm motor.

Is this normal? Anyone with VPI single motor flywheels or experience with them that could give me advice would be greatly appreciated.
philb7777

Showing 3 responses by stanwal

stanwal's avatar
stanwal
3,147 posts
 
My SDS is set at 72 for my Single Motor Flywheel with my Aries Extended. I think I set it using the center weight and ring but it has been a while. I have the other 2 tables set up now but I will check as soon as I put it back. I just took it down for photos so that should be soon.
stanwal's avatar
stanwal
3,147 posts
 
I just had an interesting experience. As I said my voltage is usually 72 at right on 60 Hz. I decided to connect the SDS to my Scoutmaster, I had to lower the setting to slightly below 60 to get the exact speed. When I went back to my listening seat I noticed the voltage read 84. I was puzzled until I realized that I had plugged the SDS into one for the regular lines rather than one of the two dedicated ones. When I plugged it into one of them the voltage went back to 72.
So there is a 12 volt difference between my dedicated and non dedicated lines on the SDS, no wonder they sound different.
stanwal's avatar
stanwal
3,147 posts
 
Tom, the same thing is happening to mine. After I did my last post I went back downstairs and, still plugged into the dedicated line, it read 84 again. Now it reads 72 but switches to 84 when I turn the motor on. I have had it on the Scoutmaster, I am going to put the Aries back up this afternoon and see what happens. I earlier tried it with the Scout and the pulley didn't rotate, just vibrated, I don't know what to make of that at all.
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