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

 HOW TO DRIVE A MOTORCAR time to the tailshaft, down to 850 r.p.m., then in order for j to mesh with it quietly it must be going at just this speed, in other words about 850 r.p.m. We remember, however, that when the engine is doing 1000 r.p.m. the layshaft is only doing 500 r.p.m. We see that for a good change to be made, it is absolutely necessary that the layshaft should do about 850 r.p.m., in other words to go faster. Herein lies Diagram showing gears in third speed. the whole secret of the movement, and whilst the gear- box is in the neutral position the clutch is let in and the engine accelerated, so that the layshaft is speeded up to the requisite amount to allow the change to be made scientifically and silently. In any gear change made within reasonable limits this method will always be found effective. In fact, one may almost say that it is so without any qualifica- tion, as to change into the third speed when the engine was doing its utmost on the level would be quite an unnecessary procedure, and also a foolish one. Even under these adverse circumstances it can be done, unless the car is actually on the down grade, because the engine will always run faster when disengaged than when driving the car. As we have so fully gone into the necessity of having this balance of speed between the wheels mounted respectively on the primary and secondary shafts when 98