. Automotive industries . (the latter fed by drips from a top tube tank) and de-livers it to the drilled crankshaft for main and big-endbearings, and thence by splash to the cylinder walls. Ahand pump can be used to send charges direct to thecrankcase to supplement the drip feed. Appreciable difference is apparent in the majority ofcases in the method of lubricating two-stroke 12 months ago the prevailing method was to mixfuel and oil together in certain proportions and to relyupon the oil thus fed through the carbureter into thecrankcase with the fuel on the suction stroke. But
. Automotive industries . (the latter fed by drips from a top tube tank) and de-livers it to the drilled crankshaft for main and big-endbearings, and thence by splash to the cylinder walls. Ahand pump can be used to send charges direct to thecrankcase to supplement the drip feed. Appreciable difference is apparent in the majority ofcases in the method of lubricating two-stroke 12 months ago the prevailing method was to mixfuel and oil together in certain proportions and to relyupon the oil thus fed through the carbureter into thecrankcase with the fuel on the suction stroke. But whileTriumph and one or two other makers retain this systemthe majority now separate the oil and fuel usual arrangement is a drip-feed delivery to thecylinder wall, the outlet having a non-return valve, andbeing uncovered by the piston during the upper two-thirds of its stroke and therefore delivering directly tothe crankcase, the oil being drawn from the pipe by the Finger tappet adjustnof Ariel engine. Fii. partial vacuum occurring below the piston on its upwardmovement. Levis, who may be looked upon as the originator ofthe two-stroke lightweight machine, has a drip feedsupply to a branched pipe, one lead being taken to thecylinder wall and the other to one of the journal bear-ings of the crankshaft. Excess of oil from the cylinderwall drains into a gallery at the top of the crankcaseand thence through an internal duct to the other crank-shaft journal at the belt pulley end. The crankshaft isdrilled and some of the surplus in the journals is car-ried by centrifugal force to the big-end. In one case, the Precision stock engine, the main oilsupply is carried in an aluminum chamber forming aside extension to the crankcase, but separate from thelatter. The crankshaft projects through its journalbearing into this oil compartment and carries a chainsprocket for the magneto driving chain. The latter isenclosed and acts as a conveyor for the oil, lifting thelatter into t
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
