How To Drive A Motorcar
A Key To The Subtleties Of Motoring

NEED FOR A GENTLE START place, such action is bad for the tyres, under some conditions, especially for that tyre which is slipping, and one such start will probably (quite at a guess) wear as much from the tyre as a dozen careful starts, in which no such skidding takes place. Then again, there is a peculiar sequence of mechan- ical circumstances set up when one driving wheel is revolving faster than another, which causes an inward lateral thrust to come on to the slipping wheel, and an outward lateral thrust on the wheel which is not Example of wheel »lip owing to bad driving. slipping. Here again it is not very great, but never- theless it is bad, tending to wear the bearings of the wheels, which are not designed to take lateral thrusts as their primary duty. Yet again, one brings the differential gear into play to an extent considerably beyond the purpose for which it is designed, and although it may be capable of successfully withstanding it for an almost indefinite period—short stretches at a time of course—neverthe- less, it is not calculated to improve it. There is also the driving mechanism attaching the shafts to the road wheels, and the keys or serrations attaching the axle shafts to the differential gear. All these are again subjected to extra stresses which they need not be called upon to take, whilst at the final moment, .when 33 C