[TowerTalk] Yaesu G1000DXA Kfactor

[Frank Norton]

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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