K7BG Matt Trott wrote:
>
> >Third, I'd look at W6QHS' book at the imrovements in mechanical strength
> >he suggests for the 105BA(CA). With that many 105s, you might consider
> >reinforcing them if your location has high winds. W6QHS' book, The
> >Physical Design of Yagi Antennas, is worth buying and reading even if
> >you don't plan to reinforce the antennas. I have reinforced my yagis
> >per Dave's book (two 40-2CDs, 115CA, 205CA) and will reinforce the
> >105CA, 115CA and 205CA that will go up next year, also..
>
> Are any of you guys torque balancing the elements after converting? Maybe
> that's the one down side if there is one. The elements on the 105bas were
> balanced about the mast. With the CAS mods I beleive that is no longer the
> case. Just wondering if ya'll are doing this? I have a torque comp element
> on my 205 (waiting for warmer wx to pull it up the tower) but with the
> varying confusion on this topic I'm wondering if I should take it off.
>
> 73, Matt--K7BG
>
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Not sure why there should be "varying confusion" on torque balancing.
By doing so, you will maximize the stability of the antenna on the mast
in the presence of wind. That will help your rotor turn the antenna in
the wind and minimize the "work" performed by the rotor and its brake
while not turning the antenna/mast. (Although I don't use torque
balancing because I use Ring Rotors on my "big" tower, the next pair,
155CA and 105CA on my 'lil tower, without ring rotors, will be torque
balanced.)
It's all in W6QHS' book.
Frank, W3LPL, uses torque compensation to torque balance his antennas.
Maybe he can add to this thread. Frank??
Bill, N3RR
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
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Sponsored by Akorn Access, Inc & KM9P
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