Summary of engine tests noting temperature rise after idling and a list of four modifications made.
| Identifier | ExFiles\Box 164\5\ img288 | |
| Date | 1st June 1937 | |
| COPY. -3- Rm {William Robotham - Chief Engineer} /GR. {George Ratcliffe} 5/JH.1.6.37. Temperature rises from normal running at 48°C. to maximum of 65°C. after idling for 15 mins. Summary of tests. 1. New ignition governor set at T.D.C.,F.A. 2. Reduction in range of hand control or delete altogether. 3. Delco or new type R.R. coil D.75673 with resistance. 4. Camshaft altered to suit .010 inlet and .015" exhaust. Rm {William Robotham - Chief Engineer} /G.Ratcliffe. | ||
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).