canoe design

Posted in July 4, 2008 ¬ 9:38 pmh.adminNo Comments »

How to build a makeshift canoe from non-traditional materials, which may have 4 people and go really fast?

There is a competition our university students to build a racing boat with non-traditional board materials (no pre-made parts, oars, etc.). The price is $ 800! We have only 2 days, but are more than willing to get down to business. We thought that some kind of canoe design would be most effective. We must also build a paddle. We have 4 paddles for each application individually or set of oars 2 everyone? Please help.

While there are reasons for the ship to be light, not overwhelming reasons. You will have £ 600 people on board, so that if the ship is 150 pounds versus 50 pounds, it is not a large percentage. Who wins the Olympic events? Really long skinny rowing boats. Like 10 or 11 inches. With 4 very highly qualified, well-muscled rowers each pull one or two oars (sweep versus skull). With the oars of a beam of 2 feet on the sides of the ship and rowers on sliding seats. BUT, if given sliding seat, handlebars, four muscular, well-trained people together for two days, looking at something like a regular canoe. Canoes at 36 "is wide enough dang stable. At 30" wide, it is still easy enough to paddle with a little practice. Touring / ocean kayak is 20 to 24 "wide, center of gravity is much lower in the kayak (butt is below the water surface) and width, which are very sensitive to increase COG. Length helps accelerate. A lot. Generally, the ship speed is the root of the water. 10 foot canoe is about 3 mph travel (but I can handle that, up to 5 mph). 16 foot kayak is easy to 4 mph (7 mph but in the sprint). 36 foot sailboat runs 6 mph. All of this has had modest or muscle wind input. Very easy sailing planing hull and a large spinnaker can quickly faster than water. Ski boat with 200 hp can do what he wants. But with muscles - length helps. Construction: I would allocate 30 inches for each rower, if you are over 6'3 ". Maybe strongback form (see link below) with 3 / 4 "plywood every 30" to create 4 rower spaces. Add another 4 feet at each end to the punch. 48 +30 +30 +30 +30 +48 = 216 inch = 18 feet. But again, it's better. Skin with 1 / 8 "plywood (about $ 25/sheet at Home Depot). Dry fit, trim (large business shears work), the test is suitable sheet rock screws. When everything looks well, re-assembly with 2-part 5-min epoxy between 1 / 8 "and 3 / 4" form and put screws in every 3 ". bow and stern will trickest geometry and you have to play with them a bit. "tortured plywood" is a concept here. Probably had another 3 / 4 "plywood form there to maintain a smooth curvature. Should be more unusual, use of aluminum siding metal house on the skin of the ship. You can get it in 16 'lengths of 3 and 4 meters wide. Defintely use 4 paddles. Bigger than the average blade area, so can give more power to them. Allow yourself time to relax a little practice before the race. Fun.

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