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).
Confirmation of a telegram detailing engine design decisions and issues.
| Identifier | ExFiles\Box 43\3\ Scan151 | |
| Date | 21th March 1927 | |
| To RG.{Mr Rowledge} Hs.{Lord Ernest Hives - Chair} HY.{Tom Haldenby - Plant Engineer} from R.{Sir Henry Royce} c. to BJ. Wor.{Arthur Wormald - General Works Manager} X9003 NO DATE GIVEN BUT BELIEVED TO BE ABOUT 21.3.27. CONFIRMATION OF TELEGRAM FROM LE CANADELHenry Royce's French residence. X.3804 X.4010 X.4550 X.2334 X.3996 X.4003 ROYCAR - DERBY. POSTED SATURDAY DECIDED IMPROVEMENTS TO GEAR. DO NOT AGREE ANY HIGH COMPRESSION PISTONS. IMPOSSIBLE TO DESIGN SATIS-FACTORY WITHOUT CYL. ALTERATIONS THEN UTILITY DOUBTED AND DANGEROUS. MODERATE SUPERCHARGER DEFINITELY SUPERIOR DESIGNS RECEIVED NOT GOOD ENOUGH BLOWER AND PIPES NOT LARGE ENOUGH FOR VOLUME MODIFY ENGINE MOUNTING FOR THREE INCH INCREASED DIA. OR DELIVERY VOLUTE. INTAKE MUST BE DOUBLE IMPELLER MUST BE SHROUDED WITH CENTRAL WEB EFFICIENTLY MAXIMUM PRESSURE MODERATE THEREFORE BLADES CURVED BACKWARDS. CAMSHAFT DRIVE FAILURE DUE TO CRANKSHAFT TORSIONAL DEFLECTIONS AND EITHER INSUFFICIENT CLEARANCE OR TOO MUCH FRICTION IN SPRING DRIVE. SENDING IMPROVED DESIGN AVOIDING UNHARDENED SLACKS REPRODUCE SYSTEMS WITH PRESENT PARTS HAVING BLACK NUT AND KEYS BY CANCELLING SPRING DRIVE THEN WITH TOO MUCH DAMPING FRICTION THEN RUN FRESH PARTS WITH AMPLE SPRING DRIVE CLEARANCE AND NO FRICTION. ROYCE. | ||