[TowerTalk] Adjustments to Tower Base Pier J-Bolts
Richard (Rick) Karlquist
richard at karlquist.com
Sat Jul 22 19:34:57 EDT 2017
Two suggestions based on my experience:
1. Protect the threads of your 1 7/8 inch rods by
slipping a Schedule 80 PVC pipe over them. This
pipe has a rated 1.936" inner diameter. This allows
1/32" inch of a gap between the threads and the
PVC. Then a 2 1/2 inch schedule 40 iron pipe goes over the
PVC pipe as a sleeve. This has a rated 2.469" inner diameter,
which allows 3/64" gap between the two pipes.
Now you push on the iron pipe sleeve.
I recently used this technique to bend a
J bolt back into alignment that shifted because
there was only one template, just as happened
2. I successfully used a 20 ton hydraulic jack to
bend the 1" braces on my HDX5106 tower that were
rubbing on the crank up cable. It worked really
well. I didn't have a lot of trouble with overshoot
because I moved it a little at a time. I think
the 20 ton jack was actually overkill, but it
was cheap enough at HFT.
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