BRAKE-HORSE-POWER.
METHODS OF ASCERTAINING. There are many methods of determining brake-horse-power, which is the actual horse-power available at the engine's flywheel. The simplest, but now an almost obsolete method, is to pass a rope around the flywheel, secure one end to a spring balance, while the other is attached to a scale pan, in which various weights should' be placed. In order to determine the brake-horse-power at any speed the throttle is opened fully and the weights are then added to the scale pan. until the engine speed has been reduced to the number of revolutions at which the output is desired to be, known. Then, by obtaining W1 = the weights in the scale pan; W2 = the reading on the spring balance; N = the r.p.m. of the flywheel and D = the diameter of the flywheel plus the thickness of the rope in feet, the - brake-horse-power can be obtained from the following formula:— B,H.P.= (W1 — W2) x — x N x D 7
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https://paperspast.natlib.govt.nz/newspapers/AS19360519.2.190.3
Bibliographic details
Auckland Star, Volume LXVII, Issue 117, 19 May 1936, Page 16
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161BRAKE-HORSE-POWER. Auckland Star, Volume LXVII, Issue 117, 19 May 1936, Page 16
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