A Copernican View of the Turntable System

Ecir38,
The base height of the arm pod casting is 110mm and 130mm with the bottom spikes.
I can't tell you how many sleepless nights I had questioning the 'correctness' of the height before having it cast?
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. :^(
Prices I obtained from machine shops were between $1600-$2100 per pod!!
The castings worked out IIRC to be $500 per unit for three (including fabrication of the mould). This was not mate's rates but an unknown commercial foundry. With the mould now in my possession, another casting would be $300.
To have each pod spray-painted and a machine shop to supply the linished aluminium 10mm top-plates and drill and tap the top holes and
bottom ones for the spikes, added $200 per pod.
Not included in the costs of course is all my design time (and anguish) as well as all the schlepping around.
But considering that each 2.25 metre Cardas Golden Ref phono cable cost me $1000 (and I needed four!)......I'm not really complaining :^)

Lew, at the bottom of that link there is a link to his blog with more great stuff.

Brad

brad
i only have assembled pics. is there anything specific that you need to know?
also, thanks for the idea of weighting the panzerholz pod. for now, i am using it as-is since i do have another stainless pod half made. it will not have the micrometer in it as the first one does.

Corby, you explained this in you prvious post to Halcro:

the vta is adjusted using the micrometer ath the top of the post, there is a thumbscrew on the side that you would loosen first, adjust the height and then retighten the screw to lock everything solid. the micrometer has a long rod attached to it that extends to the bottom of the pod. this enables the 1" shaft to be raised and lowered as required.

http://forum.audiogon.com/cgi-bin/fr.pl?eanlg&1294870073&openfrom&373&4#373

Assembly pics if it isn't a problem would give a better visualation on how it all came or goes together.

Is the brass sleve that the brass AX1 armboard just a spacer for the 1" shaft. Aluminum or stailless?

Thanks,
Brad

Another temp option to a lead ring is maybe some duct sealer that could be formed around the bottom. Duct sealer has been used as a diy dampening on speaker frames. It has a mass to it and can be molded similiar to clay.

brad
the brass sleeve on the stainless shaft is just a spacer. it was easier to machine. i needed 1.18". machining 1.5" stainless would have been more difficult on the small lathe. so i chose to keep the shaft and mating hole at 1" and machine a sleeve using brass to bring the dia up to size.
i do not have any pics of it through the assembly. that would have been a good idea!
the shaft raises with the micrometer as it extends and lowers with gravity, when the micrometer is retracted. there is a light layer of grease between the shaft and it's mating hole in the base.
i could send you closer pics if you would like.