I need to lengthen a solar blanket roller, to reuse it on a
larger swimming pool. The roller is two aluminum tubes, about
4" diameter, end to end, linked by a third tube inside, ridged so
that it touches the enclosing tubes at about 8 points. How to
extend this telescopic tube sysem? Hammering on the inner tube
(reached by a crowbar) earns me half an inch a time, but I am
apprehensive about building up a burr on the aluminum, that
would jam the tube permanently.
Is there any useful trick to unstick telescopic tubing?
Rather than a crowbar use an appropriately sized tube. A tube that slides
freely into the 4" tube and makes good contact with the inner tube is what
you want. Have someone hold the outer tube while you whack at a scrap of 2X4
placed on the end of driving tube.
This is (sort of) what I am trying to do, hammering on a T-section garden
stake, while the outer tube is braced by bungee cords to a trolley, and
the far end free. Air pressure cannot be used (many screw holes in both
tubes). If I can lay hands on a propane torch I shall try warming up the
tube, in case it helps. Thanks to all for suggestions.
On Sun, 28 Apr 2013 18:00:40 -0400, "Don Phillipson"
Shouldn't be hard. Anyone who can afford a pool can afford a propane
torch. Lots of uses.
I shall try warming up the
Sounds very likely to me. I think you need a helper, maybe two. Two
to pull and one to heat. If possible, pull before the inner tube
MAPP gas is hotter than propane, but in this case I don't think it
Could you seal the ends of the tubes? If so, maybe a little bit of
air pressure in the tube plus percussive maintenance.
A reminder though. It's pounds per square inch and 3.14 X the radius
squared at the ends of the plugged tubes.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.