PSN-L Email List Message

Subject: Re: Pivot balls
From: Pete Rowe ptrowe@.........
Date: Sun, 8 Jun 2008 10:13:56 -0700 (PDT)

Hi James
I'm interested in the turbine shown in your pictures. Since it isn't seismic related, reply directly to me at: pete.rowe (AT)


--- On Sun, 6/8/08, JAMES RIDOUT  wrote:

> Subject: Pivot balls
> To: PSN-L@..............
> Date: Sunday, June 8, 2008, 1:30 AM
> The followin link is a picture of the top mount on my newly
> constructed mini lehman, it is a 5/16" dia st/st ball
> bearing against a (used) tungsten carbide lathe tool
> insert. The ball sits in a steel washer soldered to two
> wire crimp connectors, with carbon fibre support wires for
> the boom. The bottom mount (at the end of the boom) is the
> same arrangement, and seems to work very well!.
>              James


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