Paul,

: snip-snap... as the one with their 13 foot long
: folding single, the bk 12 which I have been working on as a test platform.
: Int he shorter version the beam is 27 inches, so I'm guessing the longer
: version is simply scaled up a bit.

Have you built one of those Clark foldings?
I'd like to know which kind of fittings they picked? Since she can be built from plans those must be off-the-shelf fittings, available from the local builder's dept store.
I guess the stringers ain't lashed to the stations.
Horseshoe fittings to fit the fore part to the aft are tricky to make (in wood) and about impossible to find at a shop's.
They can be replaced by another kind if the woodwork is assembled before snugging into the skin.
They must be made of aluminium or brass not to rust.
Two L-shaped fittings getting underneath a transverse straight fitting are an alternative. On the back side a small wedge holds the station back in place.
Keyhole fittings are available but generally in much too large a size.
Special fittings can be ordered from kayak manufacturers (Long Haul, etc.)but they're costly.
So...What's the trick ?

Eric

: By the way. Building this as a NON folding boat was simple and rather fast.
: The ribs and stems are cut from plywood and held together by stringers.
: The plans called for 1/4 inch wood for floorboards, I used 1/4 inch
: plywood. A day to cut the plywood, a 1/2 day to scarf the wood for the
: stringers, and another 1/2 day to rip the wood to size. Then 1 day to
: assemble the frame. Another day on a cockpit, and you can skin it in a
: day. After that, it is just paint. Do this over four leisurely weekends
: and you'll have a pretty boat.

: Oh, and don't forget that the Walrus design, particularly the 18 1/2 foot
: version, is a nice double, too. You can read about that in the book on
: canvas covered boats by George Putz. If you like that design, check back
: and I'll send along my recalculations for the plan's design numbers. Putz
: expresses them in terms of arcs, I've redone them as a plain coordinate
: system that makes plotting them easier, and allows you to use less wood.
: Same boat design, smae shape frames, just a different way of describing
: how to cut them, and you'll sae about $15 on wood.

: Hope this helps

: PGJ
: PGJ