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).
Endurance testing for a B.60 engine, detailing specific components for testing.
| Identifier | ExFiles\Box 159\5\ scan0144 | |
| Date | 3rd February 1941 | |
| Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}3/ET.3.2.41 - 2 - d.{John DeLooze - Company Secretary} Endurance. It is our idea that we should not run a B.60 on endurance until it is really justified, by parts being available, to test in this way. There are only four B.60 engines in existence:- three in cars and one on the test-bed. Assuming that it is important to keep all cars running on the road, we have only the bare necessity of one spare engine. However, the parts we would like to test would be:- a.{Mr Adams} Crankshaft in .4% carbon steel, produced in the same way as it would be in rationalised production, with minimum machining and discs instead of oilers. We would not include integral balance weights because there is no die; and the point needs no proving anyway. b. Bearings. Vandervell tri-metal. c. Pistons. Lightened split-skirt. d.{John DeLooze - Company Secretary} Camwheel. In aluminium, of American design. e.{Mr Elliott - Chief Engineer} Conn. rods. Lightened and cheapened. It should be noted that the design which nearly ended up by Hardy Spicers producing a die, would have been even heavier than the present rod in use, which is already nearly half a pound overweight on the big end anyway. f.{Mr Friese} Valves. We should have had some cheap valves to test from Motor Components, but they were destroyed by enemy action. Also the design may be influenced by our "running-on" tests. g.{Mr Griffiths - Chief Accountant / Mr Gnapp} Crank Damper. Humber type, but with an efficient means of excluding oil, water and dirt. If this damper has any future on a Rolls-Royce car, that point will have been settled first. There is plenty of oil and water thrown about during a test bed endurance. If this is not excluded, the damping varies, and the camwheel does not get a fair test. At the present time, the parts available towards those enumerated above are the bearings and a camwheel. The piston will be available later. | ||