[TowerTalk] Rohn 65G bolt flange plate question

[Wayne Kline]

Clay.

 I have a Rohn 65 tower (150') The section mounting plates are as specified in the Rohn drawings C630665Rh 1973.   It has three revisions 78/80/82 none were for mounting plate dimension change.

 

 the flanges are 5/8 thick 4 1/2 sq. with the 4  5/8 holes  1 1/2"  off center line +   3" sq. bolt pattern.

 

 I have seen bearing plate made from 1/2 aluminum or modified  plate steel beacon  plate.

 

I modified a 65 TG  10' tapered base section as the top section 

 

YMMV

 

 Wayne W3EA

 


 
> From: w7ce at curtiss.net
> To: towertalk at contesting.com
> Date: Fri, 5 Feb 2010 17:35:56 -0800
> Subject: [TowerTalk] Rohn 65G bolt flange plate question
> 
> I have Rohn 65G sections that I plan to put up and have a question about the 
> bolt flange plates. Someone told me (K0XG I think) that there are two 
> versions of Rohn 65G and the flange plates (and corresponding bolt hole 
> locations) are oriented differently on the two versions. Does anyone here 
> know for sure if this is true or not? I have a lead on a used custom thrust 
> bearing top plate but don't want to find out after the fact that the holes 
> are drilled wrong.
> 
> Thanks,
> Clay W7CE 
> 
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