Dear Jazzgene, serving as the advocate of mechanics here let me briefly add that skating force does NOT increase with increased VTF.
Why so - since friction is of course direct related to pressure (here: VTF) ?
Because the friction increases on both groove walls - thus the relation of the side-wards pulling skating force to the downforce becomes less ( for those preferring the illustrative real-life picture: the resulting force of "your" sidewards pulling "wife" ( mine rather pulls on the same end of the rope as me .... ) becomes ever less dominant the higher the pressure of your "friend" nailing down the stylus .....).
Not my idea - it's simply mechanics here on our planet under the dreadful influence of gravity.
That's why in general skating force becomes negligible with very high VTF (talk about Ortofon and old SPU's running with 4 - 5 gr. VTF).
If you draw a force vector diagram it will nicely illustrate the point.
The skating force is a product of several sources.
However - the portion which starts it all comes from the breakdown torque of the offset angle.
That's the reason why pivot tonearms with full lateral balance ( direct addressing the static breakdown torque where it originates) and long effective length ( = smaller offset angle ) do display less skating force to start with. Now add higher VTF and the skating force - as a resulting force relative to forces aiming in different directions - becomes less and less with increased VTF.
In contrary this the reason why 9" tonearms working with low VTF and high compliance MMs do of course need anti-skating to address a problem VERY dominant in their particular situation.
Skating force in analog playback is diametral inverse to VTF.
No question about it, - anti-skating is desperately needed with shorter tonearms running with high compliance/low VTF cartridges. Here it resulting side-force is comparatively strong.
Influenced by many parameters all working to add to the skating force.
A longer effective length tonearm with ever smaller offset working with low compliance cartridge and high VTF is the exact opposite situation. Here all corresponding parameters do work to ever lessen the resulting side-force of skating.
BTW - how about starting a "skating - anti-skating"-thread ?
Cheers,
D.
Why so - since friction is of course direct related to pressure (here: VTF) ?
Because the friction increases on both groove walls - thus the relation of the side-wards pulling skating force to the downforce becomes less ( for those preferring the illustrative real-life picture: the resulting force of "your" sidewards pulling "wife" ( mine rather pulls on the same end of the rope as me .... ) becomes ever less dominant the higher the pressure of your "friend" nailing down the stylus .....).
Not my idea - it's simply mechanics here on our planet under the dreadful influence of gravity.
That's why in general skating force becomes negligible with very high VTF (talk about Ortofon and old SPU's running with 4 - 5 gr. VTF).
If you draw a force vector diagram it will nicely illustrate the point.
The skating force is a product of several sources.
However - the portion which starts it all comes from the breakdown torque of the offset angle.
That's the reason why pivot tonearms with full lateral balance ( direct addressing the static breakdown torque where it originates) and long effective length ( = smaller offset angle ) do display less skating force to start with. Now add higher VTF and the skating force - as a resulting force relative to forces aiming in different directions - becomes less and less with increased VTF.
In contrary this the reason why 9" tonearms working with low VTF and high compliance MMs do of course need anti-skating to address a problem VERY dominant in their particular situation.
Skating force in analog playback is diametral inverse to VTF.
No question about it, - anti-skating is desperately needed with shorter tonearms running with high compliance/low VTF cartridges. Here it resulting side-force is comparatively strong.
Influenced by many parameters all working to add to the skating force.
A longer effective length tonearm with ever smaller offset working with low compliance cartridge and high VTF is the exact opposite situation. Here all corresponding parameters do work to ever lessen the resulting side-force of skating.
BTW - how about starting a "skating - anti-skating"-thread ?
Cheers,
D.