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 Cadillac congratulating on the Schneider race and offering feedback on propeller shaft design.
| Identifier | ExFiles\Box 170\2\ img096 | |
| Date | 15th September 1931 | |
| CADILLAC MOTOR CAR COMPANY DETROIT, MICHIGAN CADILLAC AND LaSALLE MOTOR CARS September 15, 1931. Mr. E.{Mr Elliott - Chief Engineer} W. Hives, Rolls Royce, Limited, Derby, England. My dear Hs.{Lord Ernest Hives - Chair}: Yesterday we cabled congratulations on the Schneider. Everyone here is most interested in "how it's done", especially after seeing what a two year old model of the R engine can do on water. The Mechanics joint people have been looking at the P II propeller shaft drawings and are astonished that you can get by with a diameter of only 2 1/4" for a length of 64", and a maximum speed in excess of 3000 r.p.m. They contend that this shaft must go well past its whirling speed. They would make it 3 1/4" diameter and taper-swage the ends to about 2". I have not worked it out myself but thought you would be interested, since if you do get any high-speed roughness, this would probably be the cause. Yours very truly, Maurice Olley M.{Mr Moon / Mr Moore} Olley fe | ||