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Anybody ever seen a damping mechanism like this- no piston! The damping on my sweet Sony PS-X50 is gone and I aim to get it back.
The cueing lever is on the front of the table; it moves the cam that actuates the cueing lift-rod. The damping fluid is between the faying surfaces of a bearing that supports the rotating "lifter cam assembly." There is a normal-appearing cylinder holding the cueing rod but it's a fake! - not a piston, just a guide for the rod.
I almost removed the tonearm to gain access to the "fake" damping cylinder cast into the base, a mess considering the automatic stuff, before I saw the sketch. I can take off the e-clip, open the bearing a bit, and add oil with a needle injector, without removing the arm!
Any suggestion as to what kind of damping oil to use? I'll contact the nice folks at Turntable Basics and ask them also. Thanks.
Edits: 07/11/17Follow Ups:
Don't know why this didn't show up... sorry
While the external appearance is not so similar, one tonearm comes to mind that does use a cam operated cue lift. That would be the Thorens TP13 and TP13A. Sorry, no diagram for the TP13 lift is available at the moment.
Thanks for your reply!
Apparently much of the motion is rotational and on the horizontal plane but with elevation changes due to following the cam profile. And the cam isn't clearly shown. Just the pads, evidently soaked in silicone lube of unspecified viscosity.
And this gets to the subject of the original post. Sorry if I've veered off topic a little.
You might check in with the webmaster at Turntable Basics. That site does supply a variety of silicone oils that serve as lift damper fluids. I suspect the site owner may have some knowledge to dispense on the subject.
Link to the site at page bottom. I'd contact the site owner via his contact email noted at the site and ask directly.
In my experience with damping....there is one magic spot that might be advantageous.....otherwise it destroys the whole sonic picture.
"In my experience with damping....there is one magic spot that might be advantageous.....otherwise it destroys the whole sonic picture."
This has been affirmed by many in the instance when we are talking about tonearm damping. Here, in this thread, the op just wants to renew the damping action on his lift mechanism. I'm confident this won't have anything to do with sound. Just function.
300,000 cts Silicone fluid. Find it at Radio Control Hobby shops where people fit it to the differentials of their toy cars ~5$ for a lifetime supply.
OR some Audio Weenie supply shop where they.. will.. make you pay thru the nose for a few drops.
Thanks for the tip- there is every sort of silicone damping stuff on Amazon too in the RC section-like you said- cheap!
Is 300,000 cts pretty thick-- like thicker than pancake syrup? I have no clue but it seems to want something almost like a jelly.
I don't see the picture.
Your browser may not support that format due to problems with malware being able to be added.
I also cannot 'see' the pic. But it is because I turned off the dangerous formats years back.
( I do not even remember how to turn them back on.. LOL)
I've tried it on three different browsers; still no pic.
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