Rockmeister
pfm Member
I now have 250ml of the aforementioned oil. Free sample to Palmer owners, if you send me a small watertight plastic bottle in a self addressed and stamped jiffy bag. PM me if interested.
In early 2015 Jon emailed a newsletter, possibly the only one he ever sent. In it he talked about a new magnetic bearing, so I persuaded him to sell me one and I installed it with the help of a local technician. Has anyone else had any experience with this magnetic bearing?
Not Really, It's an anagram
No only one...Tri tonearm?
I remember Jon talked about overcoming the difficulty of changes in height of the platter due to small differences in the magnetic flux density as the bearing rotated. I'd be very interested in seeing some more detail of your bearing, do you have any pictures of the assembly process?
. It's design appears to be quite simple - 2 thin upper, washer-shaped magnets, repelling against a thicker washer-shaped magnet further down the spindle. I discovered a small fixable issue,
I still have the original bearing (it has never been used). So I will install that and see how it goes.
Not my cup of tea, but looks like a rare opportunity to pick one up:
http://rover.ebay.com/rover/1/710-5...0001&campid=5338728743&icep_item=263200385197
there were two original bearing designs. The first, which went into the first 3 or 4 decks I believe, had a ball about the width of the spindle. John 'improved' this soon after, in mid 2011 IIRC, with a new design using a ceramic cup and smaller ball. It's fault free, but when lubricating the bearing you need to remember the possibilty of the ball dropping free!
seems about right price wise...wonder whose that is?
Hmm.. The bearing outer looks slightly different to mine, in that yours has a series of internal grooves running down the bore, mine has a plain bore all the way down.right...here
In the first you can just see the ceramic cup with indent in the bearing sleeve, the indent sites the ball, and obv. the reduced size of the bearing ball in vs 2 of the design.
I think?! May need to check with Mr P re the 'ceramic' bit. I THINK that's what I remember him telling me.