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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 -------------------------------------------- Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. Force 12 Web site: http://www.qth.com/force12 Submissions: send to Force12Talk@qth.com To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk For problems with the list, contact n4zr@qth.com |
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