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In Reply to: That's not the whole story of skating force... posted by Lew on April 22, 2015 at 07:22:47:
Yes, offset angle is only an approximation of the drag vector because the cartridge could be mounted at any angle and you could still drop the stylus in the groove (although you may bend your cantilever...)The only thing that matters is the point at which the stylus touches the record. When the record turns, that spot will move (and pull the stylus) in a direction perpendicular to the radius and tangent to the groove. The overhang determines the spot and the tangent line (drag force vector, etc...) will pass to the right side of the arm pivot, pulling the arm to the left. The size of the stylus contact area and the tracking force will affect the amount of drag.
I focused on the offset angle because it's an easy way to visualize the groove's direction of travel.
Edits: 04/22/15 04/22/15
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Follow Ups
- RE: That's not the whole story of skating force... - Bry 07:56:15 04/22/15 (10)
- My only point was that there are two sources of skating force - Lew 13:14:50 04/22/15 (9)
- RE: My only point was that there are two sources of skating force - Bry 14:07:35 04/22/15 (8)
- Tonearms with "underhang" - Lew 08:00:38 04/23/15 (2)
- RE: Tonearms with "underhang" - neobop 12:35:01 04/23/15 (1)
- RE: Tonearms with "underhang" - Lew 07:53:55 04/24/15 (0)
- RE: My only point was that there are two sources of skating force - John Elison 18:31:59 04/22/15 (4)
- Fair enough. - Bry 22:29:46 04/22/15 (0)
- RE: My only point was that there are two sources of skating force - SgreenP@MSN.com 20:46:17 04/22/15 (2)
- RE: My only point was that there are two sources of skating force - Bry 22:33:06 04/22/15 (0)
- I have no idea what you're talking about... - John Elison 21:16:19 04/22/15 (0)