Detachable Motor-Driven Tire Pump Made of Foot Pump
To make this motor-driven pump, which I use with considerable success, I fitted a bicycle foot pump to a stand, arranging it to be detached quickly. A 4-in. wooden disk was cut in two, and one-half bolted to the stirrup of the pump. A wheel, 14 in. in diameter and 2 in. thick, was mounted on a 2 by 6-in. support, as shown. A crankpin at the outer edge of the large wheel was connected to the plunger of the pump. The latter may be run with an electric motor, belted as indicated, or with other power. I use a small homemade water motor described in “Shop Notes,” with excellent results.—R. S. Matzen, Fort Collins, Colo.