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).
Power output difference between balanced and unbalanced twin carburettors, referencing curve Rm.P30.
| Identifier | ExFiles\Box 13\3\ 03-page354 | |
| Date | 2nd October 1931 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. SG.{Arthur F. Sidgreaves - MD} Nor. C. Dr. H.{Arthur M. Hanbury - Head Complaints} By.{R.W. Bailey - Chief Engineer} x7080. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}2/ADL.2.10.31. BALANCED TWIN CARBURETTERS. x7090 We send you herewith curve Rm.{William Robotham - Chief Engineer}P30 showing the difference in power output of the twin carburettors balanced and unbalanced. The balancing hole was cut in an extension piece immediately over the top face of the carburetter. We anticipate that the difference between the two curves might be increased by about 10% with the 114° long duration camshaft. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||