Hello everyone,
I have followed with great interest the discussion about using a Yaesu
G1000 with a Force 12 C31XR. I am unclear as to the use of foot- pounds in
expressing the K factor Yaesu has calculated for safe use of it's
rotors. It is confusing for those who cannot convert easily, and each
added step adds a factor of uncertainty.
According to the Yaesu manual K is calculated by the multiplication of the
turning radius of the antenna (in meters) by the weight of the antenna (in
Kg), and the weight of the mast (in Kg)
C31XR: 5.9 m x 37kg (assume negligible effect of mast)= 218= K factor
, well within limit.
In addition to this calculation one must ensure the square meters of wind
surface area do not exceed 2.2 m2--in this case the wind area is .989
m2. Less than half the 2.2 m2 limit in the rotor manual.
My brother, who is a mechanical engineer ran several calculations on the
G1000 and believes it easily capable of handling even the 5BA by Force 12.
Good luck to all in putting together your tower/antenna, and rotor
combinations!
73 de Frank, kb8xu
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