The alteration of speedometers for Phantom II cars with specific tyres and wheels.
| Identifier | ExFiles\Box 59\2\ Scan040 | |
| Date | 24th June 1930 | |
| XC4308 Mx. {John H Maddocks - Chief Proving Officer} c. Nor. c. Hs. {Lord Ernest Hives - Chair} c. EP. {G. Eric Platford - Chief Quality Engineer} BY {R.W. Bailey - Chief Engineer} /Cgh {W Clough} 15/G.24.6.30. RE PHANTOM 11 SPEEDOMETERS. ------------------------ With reference to Mx {John H Maddocks - Chief Proving Officer} 3/T.23.6.30. we have requested the Order Office to arrange for the speedometers to be fitted on Phantom 11 cars equipped with 20" x 7" tyres on 20" diameter wheels to be calibrated for a speed of 810 revs. per mile, and that this alteration should take effect as quickly as possible. BY {R.W. Bailey - Chief Engineer} /Cgh. {W Clough} | ||
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).