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).
Test report on engine starting performance on gradients with different under-bonnet temperatures and carburetter settings.
| Identifier | ExFiles\Box 151\3\ scan0358 | |
| Date | 14th January 1936 | |
| -2- With this taper packing fitted we make it possible to start and run the engine in the tick-over position on a gradient of 1 in 8.2 with an under-bonnet temperature of 84°C (extreme condition). With a normal bonnet temperature of 66°C it is possible to start in similar conditions to the above on a gradient of 1 in 7.3 and only a little more hand throttle opening permits an easy start on 1 in 5. With the carburetter tilted forward it was also found that starting and idling on a downhill gradient of 1 in 5 was very good and no detrimental effects were experienced at any time during our tests. Rm {William Robotham - Chief Engineer} /F. Dodd. | ||