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).
Modifications to the cross web piston design and lubrication system.
| Identifier | ExFiles\Box 66\1\ scan0159 | |
| Date | 13th December 1927 | |
| BY.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} c. to BJ. Hs.{Lord Ernest Hives - Chair} X8040 E1/M13.12.27. EAC.10 & 14 CROSS WEB PISTON. X.8040 X.7040 Referring to drg.LeC.2494, Mr. Royce fears to start off with the webs as heavy as shewn, as he says it will always be possible to increase the webs by machining some metal off the dies, but it will not be possible to make them lighter. He would therefore like you to modify the dimensions to the attached drg. LeC.2499. At the same time we shew a modification to the lubrication of the piston pin, whereby the oil holes from behind the scraper ring are connected with the inner edges of the piston pin bosses insteadof the bore, so as to introduce the oil directly on to the ends of the little end bearing of the conn. rod. E.{Mr Elliott - Chief Engineer} | ||