The power of the stroke is all in the downward direction; there can be but little power in the forward thrust; the most important part of the stroke in hill-climbing is that given by getting behind the pedal and pushing it down. If the saddle be too far forward, power is again lost in the push and thrust, and the up-and-down motion must do the work, and power is lost on the down thrust, though added in the upward and backward push.
We may conclude that a proper position has much to do with the work of bicycling; that there is more than one correct position, different positions being adapted to different work. The racing position on the bicycle is the position for speed, and is the position of the running athlete. It is not adapted to moving at a moderate pace or to being maintained for any length of time. It is the position in which power may be most readily converted into speed; where the leverage may be applied with the greatest efficiency, and the greatest amount of work accomplished in the least possible time.
The drop position also takes the strain off the upper leg muscles, and is desirable on that account, apart from the fact that more power may be exerted from that position. The leg does not straighten out, and is always ready to give a powerful stroke and maintain an increased or even speed. It is a position of continuous movement; and if the weight and all the muscles are not directed to propel, the weight is improperly supported on all fours.
The position for speed where the weight is distributed between handle-bar, saddle, and pedals is not suitable for road work, nor can it be maintained for any long period without injurious results. It is the position where power is best converted into speed.
For prolonged work a different position is demanded. Here speed is not a necessary factor, but ease of movement and continuous movement are essential. We are not anxious to convert power quickly, but rather to reserve our powers, and use them slowly.
COASTING.
For pleasure riding and ordinary exercise, the erect position is the best. The drop position is the racing or running position; the erect position, the position of ease.
Here the saddle question presents itself. The saddle should support the weight while seated, or, in the racing position, hold the weight; it should not hamper movement, and should be comfortable for coasting. In moving over the ground, the relative position for the balance of the cyclist changes according to the grades; and the seat should be adjusted so as to be adaptable to the different positions required to enable the bicyclist to change the balance for the work of the moment.
There is also the position adapted to quick work and exercise. Change in adjustment of the application of power varies with the amount of work done by the bicyclist in covering a certain distance. The resistance caused by change of speed and varied wind resistance have also to be taken into the calculation. People of different lengths of leverage must study the different adjustments of the machine to produce the best results for the different kinds of work required of the machine.