Haven't listened to any records in a while, as my turntable wouldn't hold speed accurately. Turns out, I need to lubricate the bearing from time to time! Ha ha. Anyway, currently listening to a fabulous Analogue Productions 33.3rpm reissue of Chet Baker's, "Chet".
Lubrication will sure help .
Not sure what monster 'table you have, but I added an Eagle PSU and RoadRunner to my modest VPI Prime. Former controls the motor and latter instructs the PSU after measuring actual rotation speed via gyroscope. Speed variations no more, nope.
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Kuoppis, my table is from a now defunct company, TTW. It has a digital servo speed/motor controller that samples platter rotation 18,000 times a revolution to keep speed accurate. I simply had not greased the bearing since the original installation of the platter and that was a year or two ago! I think from now on I'll lubricate the bearing a little more frequently! I should have known better and followed the instructions on lubrication frequency, as the platter weighs 42 pounds. Here's an old picture of my table, way back when I was using a Soundsmith "The Voice" cartridge.
Just to be clear the VPI Prime design uses their inverted main bearing for the platter which does not use conventional oil, instead lithium grease is used for lubrication. Oil can be used for the motor bearing. The recommended procedure for lubricating the Prime's platter and motor bearing can be found on their forum here for your reference.I also have to add three drops of oil to the VPI Prime's bearings once a year. Let's see whether I remember that when it is time to do it next year .
Just to be clear the VPI Prime design uses their inverted main bearing for the platter which does not use conventional oil, instead lithium grease is used for lubrication. Oil can be used for the motor bearing. The recommended procedure for lubricating the Prime's platter and motor bearing can be found on their forum here for your reference.