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).
Extract discussing pinion gearing choices for different weight cars, specifically concerning the US market.
| Identifier | ExFiles\Box 49\1\ Scan382 | |
| Date | 22th July 1921 | |
| Contd. X.4299. X.3845. X4299 -2a- Extract from -> R10/G22.7.21. Re U.S.A. It should also be remembered we in England had adopted a 14 tooth pinion for the very heavy cars, that they ought to prepare at least to adopt the 15 tooth pinion for cars of ordinary weight, there being such improvement in acceleration and hill climbing on the top gear. 16/52 we consider too high a gear for even a light car with open body. Contd. | ||