A new way of adjusting anti skate!

"No overhang, no skating force." Wrong. Underhung tonearms produce a skating force except for the one instant that the cantilever is tangent to the groove (the single null point that one can achieve with an underhung tonearm). Haven’t we been through this before? All pivoted tonearms produce a skating force. So if simplicity of the explanation of skating force is your goal (as simplicity is usually your goal), and if you don’t like "friction", then you can say "no pivot, no skating force". 

Also, for the Nth +2 time, speed of rotation per se is not a factor, once the LP is spinning.  If it were, wouldn't skating force get much worse when you play a 45 rpm LP vs  33 rpm LP? And wouldn't the skating force be much worse at the outer grooves of any LP vs the inner grooves? Please read my post a few posts up from here.  I could be wrong about how groove tortuosity adds and subtracts from the net skating force, and I would be happy if you can point out where and why.  Some things actually are complex and resist attempts to simplify.

Gentlemen, I am both enjoying and learning from this discussion. I wish that I had the mind to understand all of it. I am not joking. Discussions like this are valuable to me in other courses of mechanics. 

 It would be easy to assume one point of the discussion to be the end all, and then someone points out an overlooked fact and the discussion must either accept or deny the viability of that fact.

  Much appreciated from this reader. All the best>

@lewm , call it whatever you like Lew but the "pull" on the stylus increases with groove velocity (modulation). It is usually referred to as friction but I understand your distinction. According to the equation the kinetic coefficient of friction changes with groove velocity which results in the variation in skating force. Groove velocity does not change over the surface of the record which is why the skating force does not change much over the surface either.  

@lewm, you are right that the linear speed of the record by the stylus which decreases as the arm gets towards the center of the record does not change friction. Thus if you had a blank record the friction would be the same anywhere on it.

Although it is termed as friction, as groove velocity increases more energy is required to keep the stylus moving. The stylus has to be accelerated harder which would increase the force the groove places on the stylus which would increase friction. This happens momentarily as the stylus is forced to change direction but the additive effect is to increase friction.

Overhang has almost nothing to do with skating unless you play the label area. It is almost purely the result of a pivoted arm having an offset angle. Decrease the offset angle and the skating force decreases. A straight arm has no skating. There is a relationship between tonearm length, offset angle and overhang but an offset arm will skate even if the overhang is zero. Try it millercarbon. Set your tonearm so there is no overhang and play a blank disc with your anti skating defeated and watch what happens. 

@dover , The skating force you see on a blank disc is due to raw friction, as Lew understands it and the offset angle. The pull on the stylus is the result of friction plus the energy required to change directions which increases with groove velocity. That "pull" is the kinetic coefficient of friction in the equation above.