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
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.
Tapepath. I'd appreciate a copy of the manual. Here's my email. larry@campkeystone.com Email me and I'll send you my address. Thanks again.
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.
I have had several experiences setting up the WT Reference tonearm for a friend of mine who has owned the WTR tt and tonearm for nearly 20 years. IMO, the stock damping fluid in the tonearm well is way too viscous. If I had my druthers I would use something less dense and less of it. He may or may not have the stock fluid in his well (100,000 cs?), but it is so viscous that if you raise the tonearm, it will hang in mid-air before VERY slowly settling back down. I do not think this is optimal for tracing an LP that may have small warps or vertical undulations in its grooves.
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.