DIY linear tonearm

Carlo, your mind never stops looking for innovative solutions!

The servo driven arm has appealed to lots of builders, to try to put the reading stylus correctly central in the groove.

The reference point of central is going to be important as well as the transmission and drive to the reading arm.

Lots have used external references and power, this uses the records own reference and power.

Intriguing.

It will be very interesting to see how folk who are active on this thread respond to your ideas
 
Just kicking the box, as usual - thanks H+M
I thought of posting this sketch remembering of the poor Syrinx PT TA: I had to build it, and very well, to smash my face on the stupid mistakes I had done.
This is a damn complicated contraption that probably isn't worth building, but with the help of the real experts in this thread maybe some of the heavier problems can be seen and overcome. Who knows, even the Peaucellier Easy Pi seemed impossible to many, and instead works flawlessly.

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Double wear? seems optimistic Horneydude; we need more VTF and more offset angle than usual to build up the force needed to move the cart. But for the Science...