Larry:
I did the same thing John did - used two back-to-back muffler clamps
and a pair of straight carriage bolts to hold them together. However, you
might have to saw off about a quarter-inch of each tab on the clamp saddles
to they don't bump into each other when you put them around the mast.
Before I installed them (one is atop the top bearing rather than using
the set screws to help support the mast and antenna weight, and the second
one is just holding onto the mast, so it's there when I need it), I cleaned
them with degreaser, then sprayed them with cold galvanizing. For temporary
use, not a bad surface treatment.
73 de
Gene Smar AD3F
----- Original Message -----
From: "W0UN -- John Brosnahan" <shr@medinaec.com>
To: <Towertalk@contesting.com>
Sent: Monday, August 04, 2003 6:55 PM
Subject: Re: [TowerTalk] Mast Collars
> An easy and cheap way to do this is to use back-to-back
> muffler clamp saddles. Bolt them together with straight
> bolts. Strong enough for most ham installations and
> cheap. Only problem is that it is getting harder to find
> plated clamps. Best shot is to find blister-packed clamps
> rather than ones sold in bulk. Since they are on view the
> manufacturers tend to make them look a little prettier.
>
> 73--John W0UN
>
>
>
> At 06:30 PM 8/4/2003 -0400, you wrote:
> >Somewhere...recently...I read about using a 'Split Collar' to help hold a
mast
> >above the thrust bearing while extending the mast above the tower before
> >installing the rotor. Hope this makes sense?
> >Question here is where can one get those split collars?
> >
> >Thanks, Larry K1UO
> >
> >
> >_______________________________________________
> >
> >See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> >Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
> >any questions and ask for Sherman, W2FLA.
> >
> >_______________________________________________
> >TowerTalk mailing list
> >TowerTalk@contesting.com
> >http://lists.contesting.com/mailman/listinfo/towertalk
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
|