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Old 26th April 2007, 04:55 AM   #3
Umbra
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Join Date: Apr 2007
Posts: 3
Default RE: Roger, should I go for carbon?

Thanks for your help, I will take a look at that second-hand Fiberspar then.
About broken AL booms of local racers - I know about two G and one P - breakage in the clamp (the had the same) and two broken Ch - tubes just after the clamp (one even reinforced from the front - broken just after reinforcement, probably bad batch - next year was OK).
I beleive they knock them loose while pumping and then stress-load in high winds.
There is a limitation to 60% carbon for the masts in their racing class - that could also produce more stress on the boom in gusty or choppy conditions with large sail I guess.
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