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Old August 4th 09, 04:51 PM posted to rec.radio.amateur.antenna
Michael Coslo Michael Coslo is offline
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First recorded activity by RadioBanter: Jun 2006
Posts: 828
Default Expansion issues with PVC

Dave D wrote:
I've used PVC for enclosures in the past and didn't seem to have any
trouble. But I noticed that on a couple projects we had a couple
things that started to bend from thermal expansion. The sunny side of
the free standing vertical piece heats more than the shadow side, and
the differing expansion rate creates a bend. Even for a 5' piece, it
seemed fairly extreme. But then other times this hasn't happened. We
were using the special furniture grade PVC in 1" size. Anybody had any
experience with this or come up with any solutions? Notice any
difference between PVC types or anything?



Do you have anything attached to the PVC? if you have a wire running
vertically, and especially if it is attached tightly, that might account
for a bend.

- 73 de Mike N3LI -