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).
From Mr. Royce discussing engine vibration improvements by reducing compression and trying a 'Mea' magneto.
| Identifier | ExFiles\Box 25\3\ Scan037 | |
| Date | 21th January 1912 | |
| Copy. N1/B3212. 21st January 1912. Le CanadelHenry Royce's French residence. Members of the Technical Committee. Re Engine Vibrations. (1) Mr Royce thinks the engine might be improved as regards vibration by reducing the compression slightly without interfering with the power. He thinks liners 1/8" thick should be tried under the cylinders and reported on immediately. He assumes the compression to be 62 lbs and thinks it might be reduced to 56 lbs or 58 lbs. (2) Mr Royce thinks the "Mea" magneto might be of good use in this lower compression engine as a good spark can be obtained at low engine speeds. Thos. Nadin. [Handwritten annotations] X634 [Across point 2:] This magneto has poor contact breaker &c. I like it. if the makers make this part. better it wd{Mr Wood/Mr Whitehead} save this one & standardise our own JHR [Below main text:] Now it is desired that extra power is rather to be prefered to greater smoothness of running also engine here bushed by because magnetos was rather rough. at. night & Mr Perfitt. JHR Cancel this Sheet | ||