Design choices for the Japan 3 gearbox, comparing new N. schemes with existing 25HP and P.2 models for cost-effectiveness.
| Identifier | ExFiles\Box 104\4\ scan0016 | |
| Date | 10th March 1931 | |
| R. {Sir Henry Royce} FROM DA. {Bernard Day - Chassis Design} SECRET. XY310 DA {Bernard Day - Chassis Design} 3/M10.3.31. C. to SG. {Arthur F. Sidgreaves - MD} WOR. {Arthur Wormald - General Works Manager} C. to HS. {Lord Ernest Hives - Chair} BY. {R.W. Bailey - Chief Engineer} C. to HY. {Tom Haldenby - Plant Engineer} JAPAN(Experimental Engine) 3. GEARBOX. Herewith we send prints of N. schemes 3241/2/3., final details of the gearbox casing and clutch pit, which have been sent to Derby to enable them to complete the pattern. As regards the clutch operating shaft on N. scheme 3242, we have retained the present 25HP. method of mounting the trunnion fork because it appeared to be less expensive than the P. 2. type and has operated successfully on the 25HP. The dip stick and filling plug on N. sch. 3243. are existing P. 2. pieces, and replace the combined filler and level plug now used on the 25HP. which has been complained of by Derby on the ground of expense. DA {Bernard Day - Chassis Design} 4 | ||
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).