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).
The accuracy of the speedometer for a Fedden's Bentley.
| Identifier | ExFiles\Box 89\2\ scan0059 | |
| Date | 5th December 1934 | |
| Rm{William Robotham - Chief Engineer} x7961 5-12-34. Fedden's Bentley B 189 AE. We have checked the speedometer on the above car and find it fairly accurate, as a matter of fact it is a little on the slow side. The actual figures are:- 30 MPH. - Speedometer reads 2.8% slow 40 MPH - " 1.8% " 50 MPH - " 1.4% " 60 MPH - " 1.7% " Hs{Lord Ernest Hives - Chair} / Goodbyman | ||