Well tempered question?


Hello,
I recently bought a traded-in Well Tempered turntable that has a Grado Sonata installed. The damping material, in the arm cup, seems a bit high as i move the arm from side to side. I have the original owner's manual but it doesn't reference what the damping material viscosity should be for the arm. I apologize if this has been covered before, but does anyone know what the Well Tempered folks would have packed with the table?
Thanks!
tapepath

Showing 4 responses by tapepath

Hello Grand,
Thanks for the response, I'll be happy to send you copies of anything I have. All I would need would be an address. I believe I have the Well Tempered Record Player, but the owner bought the upgrade platter. I've ordered some silicone damping material with different viscosities from Turntable Basics and have put a nice gloss to the black piano finish plinth. Thanks for the Acoustic Image reference, I'll send an email.
As a followup I contacted the Dynavector company, who now is the dealer for Well Tempered products. The lubricant used in the platter bearing can be 5W20 or 5W30 weight synthetic motor oil. The damping material used in the tonearm cup is 100,000 cSt silicone. this can be ordered from Turntable Basics online.
I hope this is helpful information.
Thanks for your information. I've been reading quite a bit about the effects of fluid viscosity on damping mechanical motion. To give readers a point of reference you can think of SAE60 motor oil having a viscosity of approximately 1,000 cSt at room temperature. Corn syrup is around 2,000 and good old Hershey's chocolate syrup is about 15,000 before it hits your ice cream and changes. Next time you put mustard on your hotdog remember it has a viscosity around 60,000 cSt. Tomato paste oozes out at around 150,000.
The recommendation of 100,000 cSt comes directly from Bill Firebaugh, the table's designer. Maybe your friend's table, like the one I have, has not had the silicone changed in quite a while? Mine is very thick, more like peanut butter.
I guess I haven't reached that level of frustration yet. My other turntables are a Maplenoll and an AR, two widely divergent designs that seem to be at opposite ends of the "pain-in-the-neck" scale. The WT seems somewhere in the middle and I like the originality of the designer.
I believe Skippy Creamy is 220,000 cSt at room temperature.
Cheers!