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).
Schedule of engine performance and component tests, numbers 29 to 35.
| Identifier | ExFiles\Box 133\1\ scan0150 | |
| Date | 29th December 1936 guessed | |
| -3- No. TEST. Date. T.R.T. 29. Power curve with large carb. and 36 mm. choke. Note ignition advance. (C.f.20) 30. Ignition - Detonation curves (C.f.21) SHOP - Remove modified No.2.Head and re-fit No.3. head with 1.850" valve. 31. Power on standard timing using large carb and 36 m/m.{Mr Moon / Mr Moore} choke (C.f.26) Try 38 m/m choke. 33. Shorten duration, paying special attention to 1.0 and trying to reduce overlap. These tests will probably take quite a while. Detonation tests are not considered necessary here, and it should now be possible to give a fairly accurate specification for the head and inlet valve. Also the effect of throat change will be known to a certain extent. SHOP - The alum. head should now be fitted to the large exhaust valve block. 34. Power curve with best conditions so far obtained. 35. Try various exhaust valve timings, once again trying to reduce the overlap without power loss. Certain jobs will be carried out as soon as the parts are ready, viz:- new top half fitting and new coupling shafts. Further work will be arranged later. Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} Edl | ||