Hi, I wonder if anybody constructed a linear tracker (servo or roller bearing or air bearing) with a pivot? It would give the arm some play in the horizontal angle to better follow the tangent of the grooves. Any ideas, pros, cons?
There have been a number of them, but this one is exceptional. No servo, but too complex for DIY.
Schroder LT Tonearm Story - Positive Feedback
Schroder LT Tonearm Story - Positive Feedback
Hello Icsaszar,
I was under the impression that all servo controlled linear tone arms pivoted. The tone arm needs to pivot a fraction of a degree in order to trigger the servo.
And once again, tone arms are not to "follow the tangent of the grooves", but the tangent of the circle whose diameter coincides with the location of the stylus at any given time. As everyone knows, grooves are cut with a variable pitch, which makes it impossible for the tone arm to track all of them tangentially.
Sincerely,
Ralf