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).
Cover sheet for a chart showing engine RPMs at 60 mph for various wheel and tyre sizes to check speedometers.
| Identifier | ExFiles\Box 158\2\ scan0066 | |
| Date | 15th November 1943 | |
| Chassis # Types General To Wym.{G. Harold Whyman - Experimental Manager} Rm.{William Robotham - Chief Engineer} Ev.{Ivan Evernden - coachwork} Ev{Ivan Evernden - coachwork}/HH. FJH.{Fred J. Hardy - Chief Dev. Engineer} 1339 Ev{Ivan Evernden - coachwork}/JD.{J. Draper - Frames}3/JH.15.11.43. Wheel and Tyre Sizes. PL.2791 Chart Shewing Engine R.P.M's. at 60 m.p.h. Reason for scheme. This chart was produced at the request of Wym{G. Harold Whyman - Experimental Manager}/CL. in order that a check up on the speedometers could be made. Instructions. Prints of this chart have been issued to Wym.{G. Harold Whyman - Experimental Manager} Wym{G. Harold Whyman - Experimental Manager}/CL. and Rm.{William Robotham - Chief Engineer} Will Ev{Ivan Evernden - coachwork}/HH. kindly issue prints to Ev.{Ivan Evernden - coachwork} Ev{Ivan Evernden - coachwork}/JD.{J. Draper - Frames} FJH.{Fred J. Hardy - Chief Dev. Engineer} Ev{Ivan Evernden - coachwork}/HH. and Ashby and file the tracing for record purposes. Ev{Ivan Evernden - coachwork}/JD.{J. Draper - Frames} | ||