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).
Front track width, wheel lean, wing width, and tyre specifications for vehicle 10-EX.
| Identifier | ExFiles\Box 70\1\ scan0221 | |
| Date | 15th February 1927 | |
| To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} from DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} x8774 DA{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork}2/M15.2.27. RE. 10-EX. X. 8774 X. 8420 We thank you for your Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG9.2.27. and note that the front track will be 58". Since however the lean of the wheel from the vertical on the old axle with 57" track is 2 1/2°, and the lean on the wheel on the new axle is 1°, the centre distance between the tops of the wheel on the new axle is actually less than that on the old axle. We therefore have not widened the wings. We thank you for your wire confirming that only high pressure tyres will be used on 10-EX. DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} | ||