----- Original Message -----
From: "Jim Lux" <email@example.com>
To: "JC Smith" <firstname.lastname@example.org>; "'Merlin-7 KI4ILB'"
Sent: Monday, September 18, 2006 11:47 PM
Subject: Re: [TowerTalk] Tower mast..
> At 05:15 PM 9/18/2006, JC Smith wrote:
>>If you really want to run a mast all the way to the bottom of the tower
>>go find a used thrust bearing (the kind that's designed to support both
>>axial and radial loads) at the junkyard for it to set on and use a rotor
>>shelf, which you can use later when you get a real rotor, to secure it to
>>the bottom of the tower. That steel ball sounds a little hokey to me.
>>You'll need to design some sort of decent brake to keep it from wrapping
>>your coax. Why not just buy a decent rotor? Can't add too much to the
>>of the project when you figure in all that extended mast stuff.
> Old car rear axle and differential takes a pretty good thrust load.
You can go to NAPA and purchase new 32009X wheel bearings for about $32.
These appear to be widely used and a pair are actually used in the PST-61.
No wonder it's rated to hold over 2600# <:-))
> Welding to the brake drum is a bit of a challenge, but usually, you
> can modify a pipe flange or similar by drilling it for the lug nut
And as we were talking earlier...that old axel is splined on one end.
Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2
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