. Automotive industries . rningout chassis for light four-seated bodies of similar size andselling them at approximately the same price in Englandas British cars, the import duty being counteracted by therate of exchange between Italy or France and Fiat model has an engine of 65 x 110 mm. (approxi-mately 89 cu. in.). It need hardly be said that these alsoare high-grade cars in miniature; they have the samecharacteristics as to engine speed, weight, and gear tatiosas the British productions, but at present the latter arenot feeling this foreign competition. There are indications tha
. Automotive industries . rningout chassis for light four-seated bodies of similar size andselling them at approximately the same price in Englandas British cars, the import duty being counteracted by therate of exchange between Italy or France and Fiat model has an engine of 65 x 110 mm. (approxi-mately 89 cu. in.). It need hardly be said that these alsoare high-grade cars in miniature; they have the samecharacteristics as to engine speed, weight, and gear tatiosas the British productions, but at present the latter arenot feeling this foreign competition. There are indications that the development of the typeis not yet complete, and one of the best known makers has{Continued on page 651) 650 AUTOMOTIVE INDUSTRIES THE AUTOMOBILE March 2U, KJ21 A Variable Speed Fan Dynamometer The ordinary type of fan brake will absorb a given amount of power onlywhen running at a fixed speed. In the type here described the fan isinclosed and load can be varied by changing area of discharge opening. By Karl D. Wood*. FAN brakes are widely used as absorption dynamome-ters in testing internal-combustion engines becausethey are comparatively simple, inexpensive and flexi-ble. They have, however, the disadvantage that a givenfan will run at only one speed when the engine is deliveringfull power, that speed being determined by the size, propor-tions and environment of the fan and the density of the order to be able to vary the speed at which a givenpower will be absorbed, English manufacturers have forsome time been using a cylindrical housing around the fanwith one or two variable openings in theperiphery. They are not known, how-ever, to have published any informationshowing the range of speed controlavailable. Hence, these experimentswere undertaken with a view to an-swering the following two questions: (1) What range of speed control isobtainable with a fan brake? (2) Given the rated horsepower andspeed of an engine, what is thediameter of fan brake necessaryin orde
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
