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).
Weight and potential modifications of E.16 engine units, specifically the propeller shaft and nose piece.
| Identifier | ExFiles\Box 42\1\ Scan132 | |
| Date | 12th January 1926 | |
| To R.{Sir Henry Royce} from AJS. c. to CJ. RG.{Mr Rowledge} c. to Hs.{Lord Ernest Hives - Chair} E.{Mr Elliott - Chief Engineer} AJS1/M12.1.26. RE. WEIGHTS OF RR. E.16 UNITS. X.2308 X.3829 Referring to thr weight of 42 lbs. for the propeller shaft and nose piece complete with bearings, bolts etc. in RHC{R. H. Coverley - Production Engineer}4/BE5.12.25., this weight is for the large nosepiece arranged to suit the crankcase flange for reduction gear housing, and not for direct drive engine. We estimate a reduction of about 7 to 8 lbs. can be made in this weight with a smaller diameter of nose piece for direct drive engine only, and by making modif-ications to the propeller shaft and its front bearing etc., which will raise the max. skin stress of shaft from 34,000 to 50,000 lbs., which is even then less than half the probable elastic limit, and these stresses have been calculated assuming a gyro torque produced by zooming, which in practice will probably only be experienced on rare occasions. AJS. | ||