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Sota Star Sapphire suspension question

Hey all; I picked up a beautiful Sota that has all the upgrades I would want. I'm coming from a VPI Scout and setup for the Sota is quite different. It has a ET 2 Arm. I have 2 questions, but if you have any comments please share. Initially I had the rubber feet screwed all the way up "locking" the sub chassis. I figured out I had to let the chassis go free. The arm board/arm side is lighter then the left motor side, is the where I load it up with lead to balance? Also, I tried my Benz SL and no matter what tracking force, the angle/weight are too heavy and distort my needle so I went back to a Dyn 20. Any thoughts on that. Also, I get no vacuum from the vac unit, I looked inside and it's clean but nada. Any thoughts. Thanks in advance. Jack
fz1jmp

Showing 3 responses by manitunc

manitunc
795 posts
 
both caps will work, but if you cant feel the suction, then the pump is not working. It could have a hole in the diaphram. Check with Sota to see about fixing or upgrading to the new pump/power supply which is quite a bit better.
manitunc
795 posts
 
I dont quite understand your comment about the tracking force and angle/weight being too heavy, so I cant comment on that. As for the vacuum pump, do you hear it running at all? What series of Sota Star do you have? Is it the one that has the aluminum face on the powersupply/pump or is it wood. If you open the pump enclosure, you will see the pump has a pressure switch plate. Sometimes that ges hung up, and just needs to be loosened. Or it could be the switch at the turntable end. Have you checked voltages and continunity between the pump and the table?. there is really little that can go wrong with this system and it is easy to fix once you isolate the problem.
manitunc
795 posts
 
If you put your finger over the inlet to the pump, with no hoses connected, you should be able to feel some suction. It's not a lot, but it should be there. If so, then the pump is working. What makes you think it's not? There isn't a lot of suction, to protect yor records. Do you have the spindle cap? It works much better with it.
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