From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Letter from a mechanical engineer discussing the performance of rear springs and shock absorbers.
| Identifier | ExFiles\Box 154\1\ scan0024 | |
| Date | 18th October 1928 | |
| X3873 Clarence A.{Mr Adams} Brock, Mechanical Engineer, Detroit COPY 1545 Glynn Court, October 18, 1928. Mr. M.{Mr Moon / Mr Moore} Olley Rolls Royce of America, Inc., Springfield, Mass. X3873 X728 Dear Sir:- Enclosed please find prints and explanations as you requested, together with a copy of the patent. Other patents are pending covering features that might be questioned as to their being covered in the patent enclosed. One blue print is marked with explanation of the dust shield. On a Lincoln, I have a set of rear springs as shown in the booklet. These springs are the same length, width, number of leaves, and full-load deflection as the standard Lincoln springs which they replace. They are exceedingly soft, and they greatly enhance the riding qualities of the car. The shock absorbers used with these springs were furnished by the Houde Engineering Corporation per directions of their chief engineer. These instruments are full double acting, and are without tapering bypass. They give seemingly perfect results when closed three and one-half points in warm fall weather. The valve would be entirely closed at eight points. A single passenger does not leave the rear seat cushion when riding thirty miles an hour over continuous chuck holes. Somewhat greater freedom to "lie over" slowly is effected on turning a corner fast with these springs. This might become somewhat objectionable on a high car having these springs both front and rear. The action of these springs over several thousand miles of all types of road has been very gratifying indeed, and the comfort is wonderful. I thank Rolls-Royce for a very pleasant and very profitable trip through their plant. The high type of work rather amazed me. Very truly | ||