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).
Letter to Mr. Papelian discussing piston rings, oil consumption in the 4¼-litre Bentley, and a visit to the Perfect Circle Piston Co. in America.
| Identifier | ExFiles\Box 148\3\ scan0291 | |
| Date | 29th December 1937 | |
| 1256. Rm{William Robotham - Chief Engineer}3/R.{Sir Henry Royce} 29th December, 1937. R.M. Papelian, Esq., Messrs. R.M. Papelian Limited, Edgware Road, Cricklewood, N.W.2. Dear Mr. Papelian, Thank you for your letter and the list enclosed. As a matter of fact, during my visit to American in the Spring I had a long talk with Ralph Teetor, Chief Engineer of the Perfect Circle Piston Co., and really, at the moment I do not think we are justified in going to America for our piston rings. The partially 'L' sectioned ring which I see they are advertising was used by us in 1926. At the moment we are not suffering from any form of ring scuffing. The average 4¼-litre Bentley as at present being turned out gives better than 2,000 m.p.g. when run in, which, in our opinion, is as good an oil consumption as is desirable; as a matter of fact we feel that 1500 m.p.g. is quite a sound oil consumption, because we would rather the oil were used than be thrown away. Yours sincerely, | ||