Oil consumption tests comparing different Aerolite pistons and rings on a 28.G.VI engine.
| Identifier | ExFiles\Box 144\3\ scan0317 | |
| Date | 17th March 1939 | |
| 1220 To By. {R.W. Bailey - Chief Engineer} c. to Da. {Bernard Day - Chassis Design} c. to Da {Bernard Day - Chassis Design} /Jnr. {Charles L. Jenner} c. to Mx. {John H Maddocks - Chief Proving Officer} Rm {William Robotham - Chief Engineer} /WB. {Mr Brazier / Mr Bell} 2/JH.1/17.3.39. Oil Consumption Tests on 28.G.VI. We have carried out oil consumption tests to determine the comparative values for the following - (A) Aerolite pistons EB.3151 (fitting skirt). E.60820 Comp. rings. EB.3122 Scraper. (B) Aerolite pistons EB.3822 (slack skirt) Piston rings as A. {Mr Adams} (C) As B. but with second ring L section.. The runs were taken over a 200 mile course and the same average speed was aimed at throughout. When the pistons were changed the rings were kept to the same cylinders excepting C test where an L section ring was fitted. From the attached results we conclude. A is 20% better than B. C is 26% better than B. Rm {William Robotham - Chief Engineer} /W.Brazier. | ||
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).