Zenith amongothers use as variable pulley to provide alteration ofgear ratio in conjunction with an all-belt drive. Only one British maker has adopted shaft drive, andthat on a scooter, the Unibus, which has worm gearingon the back axle. Frames The tubular frame is practically universal.… … indicating mounting of Douglas horizontalne In frame with draw belt adjustment forprimary chain June 23, 1921 AUTOMOTIVE INDUSTRIES THE AUTOMOBILE 1381 Rear sprung frames are not increasing to any pro-nounced extent, 90 per cent of machines being rigid.Where the rear portion is sprung, the…
Automobiles · Aeronautics
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