That’s right, it’s the solid rod version. At the moment I’m only looking at
putting up a VHF/UHF vertical (Diamond X300NA), but that could change someday
so I’d like to get this as right as possible.
Thank you to everyone for your comments and suggestions! I decided to use some
washers on the low leg to bring the tower closer to plumb, and then drill new
mounting bolt holes 90° from the existing ones. Interestingly, it turns out the
base wasn’t too far off, but the first segment appears to have a poorly
manufactured leg—the tilt followed one leg as I tried the segment in all three
orientations.
Now the tower is no more than 0.3° from plumb in any direction.
Let’s hope the rest of the segments don’t suffer from the same issue…
--
Blake Sobiloff (N6BNS)
Reno, NV (USA)
> On Jul 6, 2020, at 3:17 PM, W0MU Mike Fatchett <w0mu@w0mu.com> wrote:
>
> That is with the load at the top of the tower. If he mounts a rotor and has
> a 20 ft mast I think things could change pretty quickly?
> W0MU
>
> On 7/4/2020 6:51 PM, jcjacobsen@q.com wrote:
>> How do,
>>
>> Regarding wind load of 45G tower. If I read the original post correctly, the
>> tower is a 45G SR ie: SOLID ROD. As such, and if this is true, the wind
>> load, per Rohn specs, is: 110 mph 3 sec gust exp B 35 sq ft and exp C 22 sq
>> ft. If it's std 45 G, won't take 110 gust. At 90 mph 3 sec gust, its rated
>> at 4.9 sq ft. And I think someone should run the figures again on how much
>> it would be off over 40 foot. If it's off 1" at the top of the short base,
>> well my common sense says it off more than 4" at 40 foot. (But then I am old
>> and senile)
>>
>> 73
>> K9wn Jake
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