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).
Recommendation to fit a 14-tooth axle to a car for South Africa to counteract power loss at high altitude.
| Identifier | ExFiles\Box 69\4\ scan0252 | |
| Date | 2nd November 1928 | |
| W/S. X8770 Whr.{Mr Wheeler} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X8350 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}7/LG2.11.28. Mr. Bryan of Thrupp & Maberley was here yesterday shewing us their car for the Scottish Show. He mentioned that they were preparing a RR. car for South Africa. The majority of places of importance such as Cape Town in South Africa are about 5000 ft. above sea level. The average car therefore loses 15% of its power due to altitude. The RR. car will be no exception. We therefore recommend that if not already instructed, this car should have a 14-tooth axle to counteract as far as possible the reduced air density. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||