Cooling system tests, S.S. axle friction, and axle control dampers.
| Identifier | ExFiles\Box 11\2\ 02-page273 | |
| Date | 14th July 1929 guessed | |
| -2- the S.S. axle has had the benefit of 70% greater friction. Cooling system.- We carried out a test to-day to determine the effectiveness of the rear bonnet shutters at maximum speeds. We find that opening these shutters reduces the water temperature by about 7.5 °C. With our present atmospheric temperature of 30°C. this just makes the difference between boiling continuously and running with a water temperature of 92°C. We note that there are no leather covers on 21-EX for the top of the axle control dampers. We hope that some have been fitted on production. Hk. {Col. T. Harker - Sales} will be at the Works on Thursday and hopes to see the R. {Sir Henry Royce} engine. The weather continues most uncomfortably tropical. We shall have finished steering tests in two days or so, when I shall return and leave G.W.H. to carry on with engine boom elimination. The autovac top I brought out supplies the engine requirements satisfactorily at maximum speeds. Rm {William Robotham - Chief Engineer} | ||
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).