[Hallicrafters] coupling shaft question

[rdhalste]

 Just remember that Teflon, although a good insulator makes a very poor
mechanical device.  It "cold flows", is relatively soft, (Tighten a set
screw on it and it'll be loose in just a few hours) It also makes very poor
base insulators for antennas unless physical strain is removed from the
insulator...and it's as expensive as all getout.

I once used it for a base insulator for my Hustler HF mobile antenna.  We
left on a trip and didn't make 30 miles before I had to stop and guy the
antenn to keep it from swinging.  I used some 30# monofilament fishing line
from the loading coil through the back windows.  It worked fine after that.

Roger Halstead (K8RI, EN73 & ARRL Life Member)
N833R, World's Oldest Debonair? (S# CD-2)
www.rogerhalstead.com


> At 06:17 PM 3/9/2003 -0500, Brian Michael wrote:
> >Any suggestions for a good source of plastic, phenolic or whatever the
> >1/4" stock is that's used for non-conductive shaft extensions on various
> >equipment?
>
> Brian -
> Get the catalog from Small Parts Inc <www.smallparts.com>  . They can
supply 1/4 inch rod stock in phenolic, ABS, polycarbonate, nylon,
teflon....also couplings, unversal joints, clamps, etc.
>
> --Chuck N7RHU
>
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