This clip is intended to demonstrate why DDWFTTW sailing is possible. The upper wheels acting on the moving surface mimic the operation of the propeller and the lower wheels on the table mimc the water turbine. The system is possible by virtue of simple gearing. Notice how the vehicle can actually move faster than the board that is forcing it along.
you don't take into account that the faster the car moves the more facewind you have. even in an ideal vehicle with no air resistance there is one thing which has resistance towards that facewind: the propeller. Now if you design a propeller which has no resistance when wind comes from front and maximum resistance when the wind blows from the back, then you may have solved the DDWFTTW problem.
No need to put it on wheels or anything like that.
Gunstick 3 years ago
Rick, that is EXCELLENT! Thanks for sharing.
JB (the guy with the MythBusters challenge video)
TraderTurok 3 years ago