Duckchaser - brilliant reworking of an old folding kayak design.
Don from Melbourne sent me this email:- 'you might like to take a look at the design I've been playing with lately. Google duckchaser to find the plans & instructions. Its a 1 man folding kayak from 1 sheet 1/8" ply & some canvas & contact adhesive. We've got 9 of them on the water here in Melbourne Oz. Even got a sail on mine that works well enough to sail away from an inexperienced paddler ( to windward as well!) There are no lee boards or rudder - the setup wants to round up so gentle paddling on the windward side is your directional control. VERY definitely a flat water vessel ( though I have had mine on the river at times & even gone down a few gentle rapids. Don'
I think this little boat is just brilliant; I love it!
Here's his site with the instructions --> http://www.stevennicholson.com/duckchaser/
The design goes back a long way, as you can see here, back to 1963. --> http://www.ida.net/users/tetonsl/kayak/ and the plans were expanded by the Scout troop that Don mentions on his site.
Don's contribution is to go for an 2.4m (8 foot) version, using very light 4mm ply, and more curvature, giving a very light and buoyant one man boat, and it sails too! The original needed a 3m (10 foot) or 3.6m (12 foot) plywood sheet, pretty well unobtainable here in the land of Oz.
Pretty much according to Don's plans, but I am using some PVC upholstery fabric I picked up cheaply of EBay. Time will tell if it is robust enough. I used 4mm hardwood exterior ply, and Radiata pine for the runners, and find it very stiff. I can see what Don meant about cracking the ply. I haven't, but did crack one of the runners. I've glued it into one piece and will try again. BTW, gluing with contact cement is a messy business (at least when you are working alone) and getting the curves glued well is tricky.
This page http://tardus.net/duckchaser.html published: 14 July 2008