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In the Forum: Analog Playback
In the Thread: Copper Mat on a Micro Seiki Gun Metal Platter
Post Subject: CU-180 and bearing maintenancePosted by rom661 on: 11/30/2022
I've had an RX-5000 for a few months now. I've read yours and other comments with great interest. I'm a long time high end dealer who is losing his vision and is mostly retired. I've known this particular turntable for about 35 years since it belonged to someone who was a friend, my lawyer, and a customer. It hadn't been played in 20 years but the bearing moved freely. I don't want to bore you overly much with details but I spent a month or so restoring its appearance, changed out the Grado tonearm to a Dynavector 507 MKII with a Dynavector DV1-S cartridge and found a truly flat CU-180 copper mat, which lived up to your description. I write this because of your account of rebuilding your bearing. This guy is functional but I believe there is too much friction. Romy's 33rpm then disconnect belt and it should spin for 3 min. only goes for 30 seconds. I'm at a total loss as to how to approach the bearing. It may be that lubrication is all it needs. Obviously there's no agreed upon answer to that, even for viscosity. Mike Pranka, a friend who distributes Dynavector is a car enthusiast and has several viscosities of extremely high quality gear oil. I've no idea how to address the bearing itself. Apparently the thrust pad can be flipped so maybe that would do it. Any pointers, either tips or literal pointers to "how to"information? Thanks for your time and the CU-180 tip. I had tried a half dozen options and it was like the Goldilocks story, just right. Damped but not dead, focused but still lively.Rerurn to Romy the Cat's Site