Requesting the recalibration of a speedometer for car 11.B.V due to a rear axle ratio change.
| Identifier | ExFiles\Box 165\2\ img198 | |
| Date | 9th June 1939 | |
| 6065 To HPS {Horace Percy Smith - Experimental Factory Mgr} /WSC. {W. S. Cassel} c. to RM {William Robotham - Chief Engineer} /RC {R. Childs} /CAP. Rm {William Robotham - Chief Engineer} /RC. {R. Childs} 9/JH.9.6.39. Speedometer On Car 11.B.V. Owing to a change in the rear axle on car 11.B.V. resulting in the ratio being altered from 10/41 to 11/41 the instrument No.2.617 belonging to this car must be re-calibrated. Will you please arrange for this instrument to be returned to the makers, and the calibration altered, from its present value of 730 revs. per mile to 660 revs. per mile. Rm {William Robotham - Chief Engineer} /RC. {R. Childs} | ||
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).