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Is my anti-skating too strong.

I’m trying to adjust the alignment of the Ortofon Black Quintet cartridge on my Music Hall mmf 9.3 turntable.  When I put the stylus down on the alignment protractor, the tone arm pulls to the outer edge of the turntable.   Should I disable anti skating when doing alignment or is it set too strong?  Obviously haven’t done this too often.
Also, when listening to the anti skating track on The Ultimate Analogue Test LP, there is noticeable distortion at the end of the track which indicates too much or too little anti skating.  Any guidance here?
udog

Showing 3 responses by testpilot

testpilot
896 posts
 
@millercarbon wrote Skating forces are generated just like I said, by the stylus overhanging past the tangent. When the stylus is tangent then the force of dragging through the groove is in line with the arm pivot and there is no skating force pulling towards the centre

MC, with a Origin Live tonearm and a properly mounted cartridge, the stylus is never in line with the arm’s pivot due to the head-shell offset. Simply impossible unless you mount the cartridge to mimic a zero offset tonearm. 


testpilot
896 posts
 
Although a larger area of contact between two surfaces would create a larger source of frictional forces, it also reduces the pressure between the two surfaces for a given force holding them together. Since pressure equals force divided by the area of contact, it works out that the increase in friction generating area is exactly offset by the reduction in pressure; the resulting frictional forces, then, are dependent only on the frictional coefficient of the materials and the force holding them together
testpilot
896 posts
 
@dover 

Not wishing to stretch this overwrought saga out, but this is not correct.Skating forces are due to the offset headshell/cartridge AND the pull on the stylus.At tangent the inward skating force is zero, and therefore at the 2 null points it is zero

How can this be true?  When the stylus is tangent to the groove (null point) the pulling force caused by the friction with be inline with the tonearm’s linear offset, thereby causing a rotational torque around the tonearm’s pivot.  Only a zero offset underslung tonearm will exhibit zero skating at the null point as Lewn has pointed out numerous times

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