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).
Moment of inertia of crankshaft dampers in relation to increased compression ratios, with reference to Buick and Bentley V8 engines.
| Identifier | ExFiles\Box 132\2\ scan0180 | |
| Date | 29th October 1940 | |
| Jnr.{Charles L. Jenner} from Rm.{William Robotham - Chief Engineer} 1116 Rm.{William Robotham - Chief Engineer}10/ML.29.10.40. I see that, with their increased compression ratio, Buick's have found it necessary to put up the moment of inertia of their crankshaft damper. We cannot completely eliminate our crankshaft periods with the present damper on B.80 and should like to know what is the maximum inertia that we can use without running into anything. This will be useful in case we put up the compression ratio for a Bentley VIII. Rm.{William Robotham - Chief Engineer} | ||