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).
Requesting further test results for cylinder head comparisons, specifically regarding idling and ignition timing.
| Identifier | ExFiles\Box 101\2\ scan0149 | |
| Date | 2nd November 1936 | |
| H.F. Hamilton, Hotel de France, Chateauroux, Indre, France. c. to GWH.{George W. Hancock - Head Chateauroux} Y 50aa{D. Abbot-Anderson} Rm.{William Robotham - Chief Engineer}7/MJ.2.11.36. Thank you for your reports on the cylinder head comparisons. You did not mention idling. Will you please let us have the results of the tests carried out comparing the heads for idling and also a comparison showing whether anything is to be gained by retarding the ignition from the 13° setting with regard to this particular feature. Rm.{William Robotham - Chief Engineer} | ||