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).
Effect of rubber engine mountings and compression ratio on engine 'boom' in the 20/25 HP chassis.
| Identifier | ExFiles\Box 47\2\ Scan294 | |
| Date | 17th June 1930 | |
| Cx.{Major Len W. Cox - Advertising Manager} From Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} c. to EP.{G. Eric Platford - Chief Quality Engineer} c. to JLR. c. to C. c. to Wor.{Arthur Wormald - General Works Manager} 4117 Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}3/MJ.17.6.30. x5770. With reference to CxS/KW16.6.30. We think that the rubber engine mounting will undoubtedly reduce the tendency to 'boom' on the latest 20/25 HP. chassis. On the other hand, raising the compression ratio is likely to increase the tendency to 'boom'. Therefore, until we have tried out a number of finished cars to the latest type we are hardly in a position to say exactly what improvements it will make with the average enclosed body which is fitted. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||