Once again, the question of sizing rotators to a given antenna(s) has come up. I'm not an engineer, so please excuse me if the terminology in what follows is not 100% correct, but I think the questio
In trying to combine wind forces and starting torque needed to overcome inertia, it would be relatively easy to look at the combination of the two based on a set wind velocity (speed and direction)
being real Bill makes a good point. Virtually any "standard wind environment" is going to be, at best, just an approximation. However, since the current K factor makes no allowance for wind forces at
Author: Guy Olinger, K2AV" <k2av@qsl.net (Guy Olinger, K2AV)
Date: Mon, 1 Mar 1999 22:57:03 -0500
Pete Smith spoke: Therein the rub... I wonder if the science exists to really manufacture gears to destructive tolerances against absolute maximums, at least for the kind of money we are willing to s
It has really been interesting reading the discussion on the K-factor and Effective Moment on the reflector. While I agree that our EM and Yaesu's K-Factor are not perfect, they are much better than
The problem is the rating method. I can purchase a transmission, and know full well in advance how many lb/ft of torque the transmission will take in shock load and in steady load.You can bet a mech
... Wouldn't it be a step in the right direction if antenna manufacturers quoted their own worst-case wind torque numbers at some baseline wind-speed -- say, a steady 70 mph? Force 12 does this now,
On Tue, 02 Mar 1999 09:18:54 -0500, Tom Rauch <w8ji@contesting.com> wrote: Yup, if we're talking about the high end. More inclined to accept your point on the high-end stuff because of the methods us
Glad to see you're still out there hiding in the weeds... An interesting observation of mine is that although *writing down* these discussions can be difficult, just about all the hams I know underst
It might be interesting to have Bill, W4AN put his web polling talents to work on a rotator reliability survey - e.g. what rotator/antenna combinations have survived (and for how long) and what rotat