N6FD wrote:
> I purchased a tower from the estate of a SK. It was about 50' high and
> hinged in the middle. It had strongback that ran along one leg of the
> tower attaching to the tower above the hinge. There was a winch on the
> tower below the strongback attached to it with a cable that allowed you
> to crank the tower up and down. Unfortunately it is currently lying on
> the ground awaiting construction of the new QTH, otherwise I could put
> up pictures. If anyone can remember who the manufacture was, I would
> appreciate a pointer.
Rohn foldover, 25 or 45. I used to have one of those. It is a nice tower,
not made anymore, unfortunately. Should be documented in legacy
Rohn manuals. Tower itself is plain vanilla 25 or 45.
>> I believe Heights Aluminum towers have tilt over fixtures that tilt over
>> the entire tower, either with a manual crank/"ajax screw", or with a
>> motor. ALSO, I seem to remember Y E A R S ago in one of the mags
>> K9WN Jake
I was planning to put up one of these systems, but you are extremely
limited in dead weight because of the stress on the acme (not ajax :-)
screw. In fact, I bought the tower used and the screw was broken.
I elected to use the Heights hinge, but not the screw/motor.
Instead, I am planning on the falling derrick method, using another
Heights tower as the derrick. The screw system may be your only
option on a small lot. If so, use a lightweight rotor and aluminum
mast and LMR coax (weighs less), etc.
Rick N6RK
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|