human powered vehicle (hpv)

So--I've been stirring up some trouble here recently on a few threads--Boat suspension and Stepped hulls- 50 knots plus. Why?, specifically. Already a few irons in the fire, perhaps. Some may have noticed. Just look for copious and really long posts, going all over the place. What on earth is...

Does tow path towing take significantly less energy than on-boat propulsion (oars, propeller, etc.) for the same speed? If so, why? In my personal experience, walking along the bank towing a canoe takes a lot less energy than rowing it. This seems to remain true even if the boat is swamped...

What would be an ideal gear ratio for an 11 foot trimaran hull kayak using a dual 6 inch three blade counter rotating boat propeller set with a 1.16 pitch? I'm currently at a 1 : 13.33 ratio with a cog adjustable chain drive. Any ideas? I've got a range of reaching 1 : 18.75 gear ratio with the...

Modern Hi-Tech Viking Ship Development Class. 1. Built of modern Hi Tech materials 2. Human powered, by any method, or combination of methods. 3. Can be enclosed, or convertible. 4. 60 Athletes. 5? Crew : Captain, Steersman, Cox, Navigator, Chef, Repair and Maintenance, Doctor, Physio, Sailor...