>> Hi TT'ers,
>> I was putting together my Hygain Ex 14 today and found something I
>> hadn't expected. When tightening up the hose clamps to secure the
>> ends of the elements (7/16") that regardless of how hard I cranked
>> the clamps, the tips were still loose enough that they could easily
>> be pulled out-maybe 10# of pressure!
I like rivets. But I think there's a different issue here. Rivets are nice for
telescoping straight tubes that fit
nicely within each other. And
in fact I just ordered a bunch of Avex rivets from Aircraft Spruce, because I
was getting too many mandrels breaking off
on some Pop Rivet brand rivets. I read good things about the Avex rivets, but
haven't used them yet. Interestingly they
have a wider grip range than the Pop Rivet ones I was using. What rivets do
other people use? I also switched to a
different rivet tool.
http://www.aircraftspruce.com/catalog/hapages/avexblindriv.php
But the problem with Hygain, is the joints are swaged. And the swage is not
that precise, so you don't get good contact
on hte inner surfaces.
Plus: as I noted here before, the clamps Hygain ships are no good. They are
cheapest of the cheap and will strip easily.
I will bet two cents there is no recognizable manufacturer name on the clamps.
(look)
So: you want better clamps, so you can get more torque without stripping. And
you might want to double clamp just
because the swaging is bad.
Maybe someone can comment about whether they've riveted the slit Hygain swaged
ends. I would think it wouldn't work as
well as normal telescoping tubing.
-kevin
AD6Z
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