At 11:36 AM -0800 4/10/98, Donnie Murray (KE4RNA) wrote:
>What is the recommended wall thickness for 2" chrome-moly tubing used
>for a mast? I will have 5' inside the tower with a thrust bearing at
>the top. Two feet above that will be an antenna with 18 sq ft wind
>loading. Ten feet above above the bearing will be an antenna with 1.8
>sg ft wind loading.
50,000 PSI at 0.188" wall should be OK at 80 mph winds.
60,000 PSI at 0.250" wall should be OK at 100 mph winds.
73, Dick
--
Dick Flanagan W6OLD CFII Minden, Nevada DM09db (South of Reno)
Visit http://www.qsl.net/w7di/
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