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[TowerTalk] Rotator Plate Alignment Procedure

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Subject: [TowerTalk] Rotator Plate Alignment Procedure
From: (frank fong)
Date: Fri, 17 Apr 1998 16:04:44 PDT
>I have read several messages about the recommendations that W7NI
>recommends, for aligning the mast inside the mast tube, by bolting the
>mast to the rotator, then the rotator to the rotor plate, and finally
>doing the alignment by tightening the plate on the tower as the last
>step. I realized last weekend that my AS25G rotor plate has no side to
>side adjusting. It barely fits in the 25G. It is completely snug, has
>anyone else ran into this problem? How is the best way to try to keep
>the mast centered in the mast tube?
>73' s and Safe Tower Climbing


I'm facing the same situation this summer. Not sure if this would work 
but what I plan to do is to bolt the rotator on a separate (smaller) 
mounting plate. Attach the mast to the rotator. Align the whole assembly 
as you indicated above. Temporary secure the assembly to the regular 
mounting plate with C-clamps (the regular mounting plate would be bolted 
to the tower already). With everything aligned and temporary secured, 
drill mounting holes from the smaller plate through to the regular 
mounting plate. Secure the smaller plate to the regular mount plate 
using 2" bolts. Then remove the temporary C-clamps.

I'm also considering the use of rubber engine mounts between the small 
plate and the regular plate. 


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