At 06:31 2005-07-30 , K8RI wrote:
>
>In aircraft we "stop drill" by drilling a small hole at each end of the
>crack, but welding is not an option there. However we do the same with
>plexaglass windows. When drilling plexiglass though you have to polish the
>inside of the hole as even the scratches on the inside of the hole are
>enough to start cracks propogating.
>
>
>The base probably gets far more torsional force than tilting.
><snip>
>Roger Halstead (K8RI and ARRL 40 year Life Member)
>N833R - World's oldest Debonair CD-2
>www.rogerhalstead.com
Hi Roger!
Thanks for the info on stop drilling, sounds rather clever.
With 3 guy levels I doubt there is much torsional force on the base, most
of it is absorbed by the guy-wires before it reaches to bottom plate.
73/Peter SM2CEW
http://web.telia.com/~u92010241/index.html
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