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In Reply to: Re: update on qrk motor dismantle & TT tune up (a tad long) posted by Fred J on December 14, 2005 at 20:13:23:
Fred
I downloaded the manual for the russco and it called for 30wgt motor oil on the platter bearing, 3 in 1 on the idler bearing and 10 wgt non detergent oil on the motor bearings. The 3in 1 I used is for 1/4 hp or larger electric motors; seemed like a good bet to me as tehy turn at anywhere from 1750 to 3000 rpm. I will have to do some research on this one. I can always tear it down again if need be. :)
Vince
Follow Ups:
VinnieRemember that was a very long time ago ! and the table was marketed almost exclusively to Broadcasters not audiophiles
who are just going to use and abuse them and then replace them
with new ones periodically when they've developed any issues of have just been around too long.As well as the fact that lubricant technology was very primative
by comparison.Folks who are anal and validation neurosis stricken to the degree
they go to great ends and cost to obtain the original manufacturers
"correct" proprietary lubricants are using crap that was very lame when it was fresh back in the day, but is now usually oxidized and close to useless now.
If you don't believe me buy a some cheap non synthetic grease smudge some on your work bench and watch it turn yellow then brown, that's oxidation.At any rate the manufacturer Russ Friend and Associates hasn't exisited for at least the last 35 or more years, kind of precludes simply ordering spares, so it's sheer idiocy to use any but the better high performance current lubricants, which compared to do do like 3 in One literally make wear immeasureable.
However don't buy any of the snake oil $$$$ eBay Platter lubes
as the Moly and other ill advised and detrimental additives the kitchen table would be lubrication engineers add to their bullshit snake oil crap as it'll at the very least render the Sintered Bronze
Oillite Platter bearings devoid of their wonderful properties and at worst destroy them when they seize up.
I think all that would really be necessary is to oil more often. There have been thousands of motors that have had long happy lives on 3 in 1 electric motor oil. Ya just have to remember to use it. I may give the other a try the next time I service the bearings, depends on what I find out with a little research. I do appreciate your help though!
Vince
Tell it like it IS!!
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