[TowerTalk] 2nd thrust bearing inside tower - you opinions??
AA6DX - Mark
aa6dx at arrl.net
Wed Feb 21 11:51:54 EST 2007
Double Thrusts? Been there, done that more than once ..Rohn 45 Flop-Over
and straight-up, old Richfield gas station tower, et al ... never had a
problem, just be sure the alignment is correct. Would do it again, way I
did it was to have the 2 bearings hold the total weight of the array, and
not "seated" on the rotator. That allowed the rotator to be easily
serviced. I was using 22' mast .. Tri-Ex sked 80. Both West Coast storms
and Washington DC ice loadings .. Sure there will be those who do not
concur, but ... worky worky!
Mark Nelson - AA6DX
mailto: AA6DX at ARRL.NET
----- Original Message -----
From: "K5XA John" <k5xa at godfather-ridge.com>
To: <towertalk at contesting.com>
Sent: Wednesday, February 21, 2007 6:37 AM
Subject: [TowerTalk] 2nd thrust bearing inside tower - you opinions??
Need a little advice.
Planning about 130 feet of Rohn 45 - 20 to 22 feet of mast - Force 12 Magnum
240N over a Force 12 C31-XR at the top - side mounting another C31-XR.
Considering a 2nd thrust bearing inside the tower.
Any suggestions/ideas/experiences you might share?
73 ............... K5XA
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