Originally Posted by Frosty
It makes me cringe when reference to some canoe building flexible pedal powered propeller shaft could possibly be in any imaginable way have something to do with diesel powered transmission on a sea going boat.
I cringe when I imagine an individual burning 1000l of diesel in a boat for a weekend's recreation on the water. Been there and done that and is one thing I have regrets about.
I promote human powered boats. It is an area that has not been exploited to any great degree with modern technology. There is huge opportunity for this sort of boat and it already has more than half of the boating market by volume. So a boat design forum should reasonably have a good proportion of the threads devoted to this topic.
All the factors covering design of human powered boats can be applied to other methods of powering. There is no better way to understand the forces and dynamics involved than actually generating the power to move the boat. The engineering involved to get the best from a small amount of power is no less than that applied to diesel propulsion.
If you want a serious challenge see if you can top what Decavitator achieved - just under 19kts by a single person.
There is a great deal of interest in what human power can achieve. Look at the interest in elite sports and events like the Olympics. Look a the level of involvement in amateur level in sporting events.
I estimate there is greater interest in bike racing than motor racing these days. I know the Tour de France has huge following. Boats are only scratching the surface as far as human powered competition goes. Some good kayak events with growing numbers but not yet well known.