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).
With three technical points regarding aero engine design.
| Identifier | ExFiles\Box 179b\1\ img294 | |
| Date | 30th January 1933 | |
| EG. FROM R.{Sir Henry Royce} C. to Mr. WOH. HS.{Lord Ernest Hives - Chair} HY.{Tom Haldenby - Plant Engineer} AERO ENGINES. (1) Does the blade rod type pass through the cylinder bore, both forked and central rods. (2) If the rest of the engine will bear extra revs. then the balance weights - 6/5 scheme - will save the crank-chamber from the extra centrifugal forces, which I much fear (3) It should be realised that the two piece or J.{Mr Johnson W.M.} 3. scheme avoids the risk of broken bars between the cylinders. R.{Sir Henry Royce} | ||