In a message dated 96-06-03 09:04:47 EDT, you write:
>Greetings, other tower-monkeys! I'll introduce myself to the new reflector
>with a question: Does anyone manufacture a self-supporting climbable
>rotating tower section for use as a mast? I remember a CQ article
>many years ago which described using rohn 25 as a mast, with a
>complicated double-bearing arrangemenet.
Hi, Tony --
Glad to see you made it back from Dayton. Enjoyed meeting you and
thanks for the talk at the contest forum.
I've seen a couple of 'tower-as-mast' schemes and mostly they were flat
top sections mounted in a top to top configuration with a thrust bearing in
between. Since they are mounted together, there is no moment on the coupling
mast (is that right?). I don't know of anyone who has this commercially
available but it can be done with existing Rohn parts pretty easily.
Although I see a lot of ring rotors being used, IMO most people use them
somewhat reluctantly due to less than commercial materials and reliability.
Your mileage may vary.
Thanks for subscribing and I'll look forward to your contributions.
73, Steve K7LXC
TOWER TECH -- professional tower supplies and services for amateurs