Bob Darrah brought up a very important point on putting these
wiggins together. A bevel is essential on the sleeve so one can get
the O-ring in there. Robin always complains about that on
the wiggins used on airliners.

Since I had to redesign it anyway to add the bevel I cut the size
and cost somewhat. I eliminated a couple of machining operations.
I also went down one size on the O-ring.

Keith, I looked at making it out of pipe and it was not practical. 
Tubing can be used or two inch bar stock maybe cheaper than tubing.
One can buy bar stock by the pound while tubing is sold by the foot.

Paul Lamar
 
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