I have used the carbon/brass sleeved rod (10mm) for one season on the slope in
a 3m scale ship and discovered an unexpected trait of this combo. We all know
that a carbon rod will bend slightly then return to its original shape due to
its stiffness. But when a very ductile metal (such as brass) is used and the
combo is bent due to extreme G loads the brass bends and takes a set preventing
the carbon from returning to it's straightness. I have 2 rods to show for this.
I have searched to find thin walled stainless steel tubing but the cost is
prohibitive. I have also thought about using a Kevlar sleeve due to its
resistance in shear loads, but I don't know of any source for Kevlar tubing.
7000 series aluminum may be another possibility.
Your Carbon/brass rod may not break, but be prepared to be forever
straightening it!
Blue skies,
Capn' Crunchie
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