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).
Engine failures, corrosion, and vibrations, comparing Pontiac, Cadillac V12, and V8 engines.
| Identifier | ExFiles\Box 173\4\ img066 | |
| Date | 20th November 1935 guessed | |
| (2) A Telephone Cadillac 3000 hotel Book-Cadillac Detroit NATIONAL HOTEL MANAGEMENT CO. INC RALPH HITZ PRESIDENT HOTELS NEW YORKER, LEXINGTON, NEW YORK, NETHERLAND PLAZA, CINCINNATI, RITZ CARLTON, ATLANTIC CITY, VAN CLEVE, DAYTON consequent failure; sometimes in a very short mileage the metal completely disappears. On an engine that was not an oil user does not use much oil & hence felt a high acid content the bearings corrode when the engine is stationary. Pontiac had changed their material & very hurriedly changed back to whitemetal. If the corrosion does not take place the life is 1 1/2 times that of whitemetal. The Cadillac V12 connecting rods with cast iron runs at 80 m.p.h where life is considered adequate. They give no trouble & service. As regards V8 engines these originally had periods rough periods on the drive due to crankshaft lateral deflections. 100% balance of centrifugal masses & piston couple helps considerably but the flywheel plate vibrates at high compression ratios. Pontiac cured this (the piston) but when the crankshaft deflection was eliminated & the bearing loads induced initial ones became apparent. These | ||