A Copernican View of the Turntable System

<<I changed it over and over again and checked and double checked against the TT-81 and all the arms I had.
To make it even more difficult.....every arm has a different 'neutral' position from its base mounting as well as different extensions via its VTA adjustment. :^(>>>

Halcro, I feel ya and the end product makes you feel so good, kudos to ya. DIY makes you a appreciate the cost we pay for this stuff to a certain degree, others that don't diy just don't understand.

Brad

Thanks Corby, the final piece to me figuring your puzzle.

I'm going to draw this up in emachineshop.com to get and idea in cost between stainlees and brass with the adjustable outriggers optional.

It looks like your base is 3"h x 3"od?

Halcro this could be truely universal if there were differant length 1" shafts with differant length micrometer shaft extensions.

Brad

Dear Brad, I certainly can comprehend the joy involved in
making something on your own. But because of this division of labour we are not equal.The 'wish' or 'desire' don't imply any capability a priori or in advance. I myself am very glad to know an machinist with the CNC lathe. In my
most optimistic dreams I see my self not working with the
'tool' mentioned. This is also a part of our 'understanding'.

Nandic, the thought behind the design in something like Halcro and Corby's pod is 80-90% of the work. Even if there is no desire to own a CNC and that is outsourced it is still your mental labor that made it come together.

You are lucky to have a machinist as a friend.

Brad

Brad,
There are unfortunately no free lunches?
A truly "universal arm-pod" like Corby's, requires many 'connections' and 'cantilevers' all held by grub-screws or something similar.
The vertical micrometer is in itself a cantilever from the fixed base and then the arm 'platform' is cantilevered from this shaft.
In any cantilever, the bending moment increases as the square of the cantilever. The deflections involved in such solutions render the stability of the arm-pod questionable.
I find with my DaVinci Grandezza 12" Ref tonearm, that even extending the shaft to its maximum for VTA adjustment, affects the sound rather badly :^(
Cheers
Henry