Hand-Powered Motor Boat Gives Real Watersport Thrills (Jul, 1931)
Hand-Powered Motor Boat Gives Real Watersport Thrills
A DIMINUTIVE motor boat powered not by a motor but by a hand crank operated by the swimmer has been devised by a clever home craftsman to provide watersport thrills at the bathing beach. The propeller of this odd craft is geared to a pulley which is in turn belted to the hand crank on the front, as illustrated in the drawing above. Buoyancy of the craft is increased by use of small pontoons fitted between the boards running lengthwise of the craft.