Todd,
That is the question that has been preoccupying me. My thoughts are a
4x 2 in clear tight grained oregon. I was also thinking of bolting
another 3'6" of wavepiercing bows to each end of the lee hull. That
way I could car top it
By the time I tried to work out the strength needed for the cross-
beam supports, the rudder support, the dynamic loading of a partially
stayed rig, transfer of torque from the the rudders and rig to the
crossbeams, etc. it made me appreciate the work that Rob and Mark
have done getting their boats working. When I get my 7.5m lee hull
drawn up I'll be asking Rob for comments on the engineering- for a
small fee. There is no substitute for experience as it is hard to
calculate anticipated dynamic loads at sea.
Good luck with the project,
Robert

--- In harryproa@..., "Todd" <ktsrfer@m...> wrote:
> How strong how light and of what material should the beams be
going
> to the weather hull on a 16' equal L an 8 ' beam ? I know I know
its
> only 16' but thats all the room I have and can afford. I was
thinking
> of maybe a 16 or 18'' center walkway between the hulls and two
> laminated 2x3s about two to three feet back from each bow
connecting
> the two hulls at each end. What do you think? To heavy, over kill,
or
> not strong enough?
>
> Todd