I'd tighten up the governor bearing end play ever so slightly. Check also to see if the governor bearings are sloppy side to side.
Ron L -----Original Message----- From: Phono-L [mailto:phono-l-boun...@oldcrank.org] On Behalf Of Robert Wright via Phono-L Sent: Thursday, September 12, 2019 9:47 AM To: Phono-L Cc: Robert Wright Subject: [Phono-L] Credenza speed readout needle chatter Hello to all! I hope someone can help me with this incredibly annoying problem: the speed indicator mech of one of my Credenza X's chatters at 78rpm It's fine at 80, it's fine at 90 (I have a Hughes adapter I use for Pathé verticals), and it's fine below 77. But right at 78 to 79rpm, it chatters. It's pretty obviously the contact point between the leather nib and the governor disc -- once it's up to speed, it bounces instead of riding smoothly against the surface. I've cleaned the disc and even held some 2400 sandpaper against it, I've replaced the leather nib with fresh leather shoestring of two different gauges (one which was sold specifically as material for phonograph brakes), I've soaked the nibs in oil, I've slathered them with lithium grease Nothing helps. I can get a few plays without chatter if I apply more grease, or clean off the grease that's there (same result -- "disturbing" that contact point in either way helps for a few plays). Anyone else ever had to deal with this? Thanks in advance, Robert _______________________________________________ Phono-L mailing list http://phono-l.org Unsubscribe: phono-l-unsubscr...@oldcrank.org _______________________________________________ Phono-L mailing list http://phono-l.org Unsubscribe: phono-l-unsubscr...@oldcrank.org