2. analog
  3. 1263584319

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 2 responses by joe55ag

joe55ag
29 posts
 
Hi Philb,

I have the same setup with a single flywheel, SDS, and VPI ring and clamp.

The SDS voltage and frequency really should not matter, as long as both 33 & 45 speeds are perfect with your KAB strobe.

I learned a good tip on Audiogon for the SDS and VPI setup.

When you are fine tuning the SDS, put an LP record on the turntable with the ring and the KAB disc over it.
Now, before putting the clamp on, take a 45rpm single with the center plastic in it, and place it on top of the KAB disc, then put the clamp on top. (you will still be able to see the speeds on the KAB)

When you go to set your speeds, place the stylus in the center of the 45 track and actually play the 45. (you can leave the volume off of course) Now set your speeds. This gives you the speed of the fully loaded platter including the average stylus drag..

Absolutely the best way to do it..

Have Fun,
Joe
joe55ag
29 posts
 
Hi Again,
The SDS is made to jump start the platter and then reduce voltage after a few seconds on both 33 & 45 speeds..

That is normal operation..

However this is only when you use the switch on the SDS as your on and off switch. I do not. Mine works fine at the reduced voltage using the motor switch as the on and off..

Here is the Correct Pulley for the setup. Mine works very well with this.

Joe

More to discover