So I have some new information! Apparently the beams I have now came from a Nacra 18sq, originally 11ft wide (?) and were cut down to 8'5" or 101in. I don't believe they have been installed with these hulls before, which explains why some things weren't adding up (hole locations for anti-rotation hull bolt, and stains where a full length traveller track used to be, along with a myriad of other old holes and stains). Not that this changes things much - I still need a replacement front beam, and ideally a rear one too. Would be nice to get original equipment, but if I do fabricate them myself, I'll be asking y'all for some hard numbers on the dimensions of various aspects of the factory beams.

I'm still open to purchasing some used beams, and a few of you have sent me contacts that I've replied to. Thanks for that.

Last edited by sierracat; 10/25/14 12:14 PM.