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).
List of hoped-for improvements regarding chassis length, engine performance, cylinder bore, and gear ratios.
| Identifier | ExFiles\Box 5\2\ 02-page253 | |
| Date | 21th April 1928 guessed | |
| -2- I have wired him to get it to Derby as soon as possible: (not a long or expensive job). I am inhopes that : (1) We can at once let Sales have the 3" longer chassis when they want a 6 seater, and so save the weight etc of high bodies. (2) That we can at once give them the improved engine performance with the new head, exhaust, etc. - i.e possibly for the 150. (3) That for the next 200 we can give them Mr. Elliott's latest suggestion of cyl. bore increased from 3" to 3.25". HP. rating I think goes up from 21.6 to 25.5 HP. Whether we can increase the gear ratio more than the change given by the small wheels will be learnt later. I think the longer and heavier bodies should have 10% lower gear than the smaller and lighter ones. R.{Sir Henry Royce} | ||