To: atm{at}shore.net
From: Doug Tanaka 
Reply-To: Doug Tanaka 


At 08:58 AM 12/13/2002, you wrote:

>One other question, if it's not too much trouble: I had planned on a
>poncet-style single south axis. I haven't found much in the way of
>recommendations for bearing sizes/recycled parts to use for this
>axis...but I am guessing the larger the better, for stability? I've been
>considering using a small (3-4") lazy-susan style bearing for this (e.g.
>http://www.workshopsupply.com/mischardware3.shtml) since these seem to
>support both radial and axial load. Are there any other commonly-available
>items typically used for this?

The commercially made ET Platform used a regular bronze bushing (I believe
1/2" i.d.) and a stainless bolt for the single south axis.  I don't
think size is as critical a factor as a good, smooth design.  Good luck.

Doug Tanaka

--- BBBS/NT v4.00 MP