Vinyl Asylum

The arm does have skating force

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This Post Has Been Edited by the Author

In Reply to: RE: The most interesting thing I saw at RMAF... posted by John Elison on October 20, 2012 at 19:09:21

Long discussion on this some time ago on DIY Audio.
By the analysis linked below, the arm will have a skate force component because the stylus reaction force vector does not pass through the main pivot point. Until Frank reveals the exact details of the magnetic track components the amount of skate force is difficult to calculate, but on first principles for a design like this it must exist and it must change with arm angle.
~~Caveat: Frank is a genius and his knowledge of magnetics far exceeds mine. It remains a possibility that he has developed something which is not covered by my analysis.~~
I'm probably wrong. See JE argument below

Mark Kelly
Geometry (Open in New Window)

Edits: 10/21/12 10/21/12 10/21/12 10/21/12

Follow Ups:

RE: The arm does have skating force - Bry 17:16:51 10/21/12 (1)
- It's in the maths. - Mark Kelly 18:10:40 10/21/12 (0)