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).
Page of engineering calculations for component dimensions, including slot and neck measurements.
| Identifier | ExFiles\Box 68\4\ scan0075 | |
| Date | 28th March 1928 guessed | |
| -2- Contd. Increased width of slot = .016" New " " = .166" On depth of slot we save 2 x .048 = .096" and spend 6 x .008 = .048" i.e. depth of slot is less by .048" and will therefore be .487". Slot is now .166" x .487" Present neck depth = .535 - 3/4 of .075 = .535 - .056 = .479" Dia. at neck = 3.100 - .958" = 2.142" Oce = 6.74" 1/28 of this = .241 Slot = .140 .. Neck = .091" New neck depth = .487 - 3/4 of .083 = .487 - .062 = .425 Dia. at neck = 3.100 - .850 = 2.250. Oce = 7.07 1/28 of this = .253 Slot = .166 Beck = .087" Contd. | ||