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).
Urgent request for speedometer recalibration and a new dial due to a changed rear axle ratio on car 30.G.VII.
| Identifier | ExFiles\Box 165\2\ img200 | |
| Date | 15th June 1939 | |
| PS/WSC.{W. S. Cassel} .. to Rm{William Robotham - Chief Engineer}/RC{R. Childs}/CAP. 6065 Rm{William Robotham - Chief Engineer}/RC.{R. Childs}8/JH.15.6.39. SPEEDOMETER FOR CAR 30.G.VII. The rear axle ratio on car 30.G.VII, has been altered from 9/37 to 11/41, necessitating the re-calibration of the speedometer. Will you therefore please arrange for this instrument No.X.559 to be returned to the makers and calibration altered from its present value of 703 revs. per mile to 629 revs. per mile. At the same time, will you please instruct them to fit a dial with a scale reading up to 110 m.p.h. This is extremely urgent as the car is due to leave for France on the 26th. inst. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} | ||