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).
Comparing the hill-climbing capabilities of the 40/50 and 20 HP models.
| Identifier | WestWitteringFiles\K\June1923\ Scan80 | |
| Date | 21th June 1923 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to BY.{R.W. Bailey - Chief Engineer} c. to EP.{G. Eric Platford - Chief Quality Engineer} ORIGINAL HsRm1/LG21.6.23. COMPARISON OF CLIMBING CAPABILITIES. X488+ 40/50 AND 20 HP. The equivalent gradient surmountable figures given in this memo. represent a hill the car could climb steadily and indefinitely without rushing. This does not mean the car would fail on any hill steeper than this, because, in actual practice, the hill would be rushed, and, provided,it was not long, the car would go up decelerating the whole time and just crawl over the top. It should be noted that the maximum guaranteed load is carried in each case. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||