Urgent memo requesting the speedometer recalibration for car 14.B.V. due to a rear axle ratio change.
| Identifier | ExFiles\Box 165\2\ img204 | |
| Date | 29th June 1939 | |
| 6065 VERY URGENT. To HPS {Horace Percy Smith - Experimental Factory Mgr} /WSC. {W. S. Cassel} c. to Rm {William Robotham - Chief Engineer} /IMW. {Ivan M. Waller - Head of Chateauroux} c. to Rm {William Robotham - Chief Engineer} /RC {R. Childs} /CAF. Rm {William Robotham - Chief Engineer} /RC. {R. Childs} 5/JH.29.6.39. Speedometer for car 14.B.V. It has been decided that the rear axle on 14.B.V. which has a ratio of 12/41 shall be changed for one having a ratio of 11/41. This necessitates a re-calibration of the speedometer. Will you therefore, please arrange for this instrument No.Z.912 to be sent to the makers as quickly as possible with a request that the calibration be altered from its present value of 605 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).