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).
Design revisions for the 'Japan 3' engine scheme, including shaft diameters and cylinder skirts.
| Identifier | WestWitteringFiles\V\October1930-February1931\ Scan233 | |
| Date | 22th January 1931 | |
| K.{Mr Kilner} FROM E.{Mr Elliott - Chief Engineer} [Strikethrough] C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} [Strikethrough] C. to HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} JAPAN 3 - GENERAL SCHEME OF ENGINE - LeC. 2853 [Stamped: ORIGINAL] X5770 Y 5010 We have not hastened to send you a print of the above as we considered that practically all the information shewn was settled. As however a revision of certain features such as shaft diameters may be called for we attach a print herewith shewing the design enlarged to the 3.400 bore. We have suggested that RM.{William Robotham - Chief Engineer} should confirm his conclusions regarding crankpin dia. by making similar experiments with the two 25HP. crankshafts at Derby to those he has carried out on Phantom. Regarding the cylinder skirts shewn on LeC. 2853. Derby have confirmed that these can be machined as shewn on the present 25HP. cylinder centres. E.{Mr Elliott - Chief Engineer} [Stamp: RECEIVED 26 JAN 1931] | ||