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).
Tray system and front and rear suspension ratings.
| Identifier | ExFiles\Box 173\4\ img122 | |
| Date | 8th December 1935 guessed | |
| -4- We believe Coverley knows about the tray system. The composition they are using is SS{S. Smith}-45, but they say it is not important. Front Suspension. Olley has been working out our front suspension analytically and says that our front spring rating is less in the normal position than we suppose. Instead of the equivalent of 7º at the wheel, he says we are actually getting the equivalent of 10º static deflection. He also says that our actual rear rating is greater than we suppose, viz: approximately 5º instead of 7º equivalent deflection. No harm is done by the increased front deflection except that the rating tends to fall off towards the bump, but the steering stability of the car is improved. He says they have found a similar phenomenon on their own suspension, and only discovered it recently and by accident. I hope to send more particulars in a day or two. I can see the argument about the front suspension, and it tallies with a phenomenon we noticed of the spring load needed to bring the car into the normal position. La.{L. A. Archer} | ||