The design, construction, and operation of a horse power meter as applied to a rear wheel dynamometer for testing automobiles . the jawsof a universal chuck, fastened to the spin-die of a high speed lathe. A thread, partlywound on wheel C, had a key suspended at itsfree end which was placed along the edge ofa steel scale clamped in a vertical the speed of rotation increases, the planeof the governor weight tends to assume a po-sition perpendicular to the axis of the any constant speed, the position of thegovernor weight plane will make a constantangle with the axis, becaus
The design, construction, and operation of a horse power meter as applied to a rear wheel dynamometer for testing automobiles . the jawsof a universal chuck, fastened to the spin-die of a high speed lathe. A thread, partlywound on wheel C, had a key suspended at itsfree end which was placed along the edge ofa steel scale clamped in a vertical the speed of rotation increases, the planeof the governor weight tends to assume a po-sition perpendicular to the axis of the any constant speed, the position of thegovernor weight plane will make a constantangle with the axis, because the force ofthe centrifugal action will be balanced bythe tension of the governor spring. Themotion of the governor weight is transmitted 17. to the wheel to which the weighted threadis attached, and this causes the key torise along the scale. 18. DATA ?0R TACHOMETER CALIBRATION CURVE. The travel of the key along the scale, atvarious speeds .vas as follows:- ^evolutions Per I.:inute,(For gear £ & 3) Lift of Thread,fin inches) 55080011001175150021002200 AKltoURINSTITUTE OF TECHSCOiOaT. AKMuUK INSTITUTE OS TKCHi-OLOGT 20. CONSTRUCTION OP TRANSMISSION GEARS. ^he proper number of teeth for the gearwhich was to mesh with the split gear on the dyna-mometer shaft, and give the right amount of travelof the indicating pointer, was determined asfollows:- The maximum movement of the circum-ference of the tachometer wheel C, (Seefig. Z ), as determined in the calibrationtest, was inches, at a speed of of the governor shaft D. the mostregular portion of the curve lies bet-ween the ordinates representing 0 and8 inches of lift. This representa travel of eight inches across the chart.:^he speed of rotation of gear 2 & 3 asshown on the chart, corresponding to alift of 8 inches, is 1350 The maximum speed of rotation of theengine on the KALLADAY car is about On direct drive the rear wheelswould be rotating at a s
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Keywords: ., bookcentury1900, bookdecade1910, bookiddesignconstr, bookyear1916
