Just about to change my old style Stealth beams to the later wider beams and its apparant that we can't get the same diameter tube so I would guess that I will have to go to the smaller diameter tube / dolphin striker arrangement as per the late Stealths.

However doing a bit of thinking I sort of hate the idea of the dolphin stiker so with a bit of lateral thinking I came up with the following idea.

A front beam of say 70mm 1.6mm thick tube with a further 50mm 1.6mm tube down the inside. make a couple of spacing rings say at the centre and end mounting points from Ali and fill the void with expanding foam. Sort of like the honeycomb skins we use for the hulls

My gut feeling is it would be more than strong enough but I need an engineer to do the calcs, any offers and any comments as I'm sure its been done before by one of you guys. <img src="http://www.catsailor.com/forums/images/graemlins/cool.gif" alt="" />