Self-propelled vehicles; a practical treatise on the theory, construction, operation, care and management of all forms of automobiles (1906)
Homans, James E. (James Edward), b. 1865 · New York, T. Audel & Company · leaf 250
f the engine, the only undetermined element in the aboveformula is the speed, expressed as revolutions per minute of thefly-wheel, which being halved gives the number of explosionsper minute for a four-cycle engine. The readiest method is totest with a tachometer (speed-meter), an instrument… … Fig. 164.—Method of Averaging a Diagram with one Type of Planimeter. The pin, Q, isset in the groove, I. The card is held on the board between clamps, C and A. Thetracing point, O, is set at point, D, and the arm moved clockwise, the vernier anddrum having been set at zero. Average Figures for…
Automobiles
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