Page:Motors and motor-driving (1902).djvu/90

60 This contour and the following particulars should be of considerable service to the purchaser from Devonshire or other hilly districts, and also to the maker of a good car, as the latter can prove by demonstration not only whether the car will go up a hill of known gradients but—a very important consideration—at what speed it will go up the hill.

The ascent to which I refer is situated in Richmond Park, and is usually known as the 'Test (or Broomfield) Hill.' On entering the Robin Hood Gate, the first turning to the left



should be taken. A gradual and winding ascent leads to the foot of the steep portion. Time should be taken on passing the second of two oak trees on the right, the branches of which completely overhang the road. Time should also be taken at the last oak tree on the right at the top. The difference of altitude between these two trees is 75·03 feet. The average gradient is 1 in 11·3; and there are 72 feet having an average gradient of 1 in 7·8.

The following table shows the times taken by cars travelling