At 9:36 AM -0800 11/18/97, Joe E. Mesh wrote:
>Tom what is your feeling on pinning elements to boom, pinning booms to
>masts and pinning the mast to the rotator?
I'm not Tom, so all I can offer is one data point.
I just took delivery of my new Orion OR-2800 rotor. This is the strongest
rotor this side of a prop pitch. It is a worm drive, weighs a ton and is
built like a tank. There instructions state:
The mast clamps provided with the positioner, when properly tightened, will
not allow the mast to slip under normal weather variations. However,
during extreme wind conditions a large antenna or array can generate
extreme torque forces on the mast. In this instance, a small amount of
mast slip is possible and even desireable. Slip may actually help prevent
serious damage to the antenna, tower, and/or positioner components. For
this reason, DO NOT 'PIN' THE MAST TO THE POSITIONER. PINNING THE MAST WILL
VOID THE OR-2800 WARRANTY."
Dick Flanagan W6OLD CFII Minden, Nevada (South of Reno)
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Administrative requests: towertalk-REQUEST@contesting.com