A fast 27' aluminum design in the works for amateur builders. She could also be built in sheet plywood and epoxy. I'd love your feedback.
http://www.wilkinsyachtdesign.com/27-al ... cing-sail/
I like the sliding seat rowing stations but I think the future of human propulsion is pedal drive. Especially if you are designing a boat from scratch, pedal drive is much more effective and comfortable over long periods of time.
I'm glad that there are professional NA's working on designs for R2AK, very cool!
Thanks for your interest and approval of this design.
Think of Buck as a big dinghy. I started the concept with maximum highway trailer width (8.5'). I bent some fast lines around that and enough sail area for light air and she ended up at 27'. I think the E-27 is a bit less beam. One should be quick to reef Buck. Although standing at the mast in the cockpit makes reefing a whole lot less work.
Her sail plan is quite low and this keeps her CE low helping with stability. I had a version of her with seated hiking racks and ditched them out of simplicity, and were replaced with lifelines.
Your question about lead ("leed") refers to the CE's relationship the the CLR. All monohull sail plans have the CE ahead of the CLR. The amount varies per hull shape, sail plan, etc. This is to counteract the pulling force (twisting moment) the sail has over the hull drag. Keeping in mind that the hull heels and is relatively placed a varying degrees/distance to windward of the sail.
In short Buck is a bit tender and she is shown with more or less normal lead.
Her rig may be stepped fore or aft, or raked, and her chainplates (although not shown) will allow varying positions. All tweaked post shakedown. You raise a good question as Buck is not a typical shape.
Yes, the leeboards will need a bit of lead (metal) in insure they drop with ease.
You are not the first one to sell me on pedal drives. I had started a catamaran R2AK design last year around a retractable, composite propeller pedal shaft. That idea is not dead!
I look forward to the catamaran design!
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