Alteration to the pivot lean to address high-speed wobbles.
| Identifier | ExFiles\Box 67\3\ scan0270 | |
| Date | 10th September 1925 | |
| To R. {Sir Henry Royce} from Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} c.c. to CJ. BJ. c.c. to RG. {Mr Rowledge} E. {Mr Elliott - Chief Engineer} c.c. to DA. {Bernard Day - Chassis Design} EY. c.c. to Wor. {Arthur Wormald - General Works Manager} +ev {Ivan Evernden - coachwork} 30 Hs {Lord Ernest Hives - Chair} /Rmd/LG10.9.25. HIGH SPEED WOBBLES. +457 Alteration to pivot lean. We have altered the pivot lean on a car from standard to 1° forward. We found that in this condition the car still had a marked tendency to self-centre. We could detect no appreciable improvement in high speed steering wobbles from this alteration. We are trying a car with a forward pivot lean of 5°. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} | ||
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).