That was it. There is a 2" aluminum tube over a 1 1/4" stainless steel
"jackshaft". It's held with two 1/4" bolts. Holes thru aluminum tube were
elongated. Drilled to 3/8". Unfortunately, these aren't perfectly round,
either, since I drilled 'em with a hand drill, but I'm hoping the torque I put
on the 3/8" bolts will crush the aluminum tube into clamping on the stainless
steel. We'll see. If not, I can drill more holes thru that assembly and put
more bolts in. It seemed more solid, but next big wind, I'll have a look.

Thanks again for the tip.

Dave Head

On Sun, 22 Feb 2004 14:46:54 -0600, "Crazy George"
wrote:

Dave:

From that description, I suspect you are going to find all the bolt holes in
the tubing elongated from torque. We usually drill slightly oversize holes
for our fasteners, but in this high stress application, the holes should
start undersize so the fasteners have to be driven in and are tight from the
get-go. Also, it is necessary to select fasteners which do not have threads
where they pass through the walls of the tubes. This is often the most
difficult challenge.