Outing . ubing which,while of uniform size on the outside, increasesin gauge near the joints, in which case no piecesof tapered metal are inserted for reinforcement,hence no brazing or filing. In many cases thetubing is especially heavy at the ends of theforks at the axle, thus adding strength andrigidity to a most vital part. Until the present year most bicycles havebeen so constructed that a line drawn from thecentre of the front wheel axle to that of the rearone would pass through or very near the centreof the crank axle. In the new models, however,the crank box is lowered from 1 to 2 1-2 i
Outing . ubing which,while of uniform size on the outside, increasesin gauge near the joints, in which case no piecesof tapered metal are inserted for reinforcement,hence no brazing or filing. In many cases thetubing is especially heavy at the ends of theforks at the axle, thus adding strength andrigidity to a most vital part. Until the present year most bicycles havebeen so constructed that a line drawn from thecentre of the front wheel axle to that of the rearone would pass through or very near the centreof the crank axle. In the new models, however,the crank box is lowered from 1 to 2 1-2 inches,making the wheel steadier. BEARINGS AND SPROCKETS. The most noticeable improvements in thebearings of 1897 bicycles are (1) the tendencytoward simplicity ; (2) facility of adjustment,and (3) the ease with which they may be dis-mantled or assembled. Both cranks and sprock-ets of the Monarch line may be instantly de-tached from the machine without removingthe chain or disturbing the adjustments of the. VICTOR CRANK SHAFT AND BEARING. bearings. The Victor crank-shaft is unusuallylarge, and hollow, giving greater resistance totorsional strain with a minimum of metal ; andin the Columbias the chain line is brought in-side of the bearings. In some cases the crank-hanger bearings are widened without increas-ing the width of tread, and many models arefitted with three-point bearings, in whichthe balls come in contact with the cone and cupat three points only, thereby, it is claimed, ma-terially reducing friction. Ball retainers, whichserve to keep the bearings in place when theaxle is removed, are quite general in the crank-
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Keywords: ., bookcentury1800, bookdecade, booksubjectsports, booksubjecttravel
