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).
Extract discussing a revised design for a geared speedometer drive.
| Identifier | ExFiles\Box 79\3\ scan0115 | |
| Date | 3rd June 1921 | |
| X.3685 Extract from CY1/G3.6.21. X.3764 (13) GEARED SPEEDOMETER DRIVE. This is being fitted on a few cars. We are obtaining a revised design however with Norma magneto type ball bearings in place of the special small ball bearings used on 4.EX (Print of improved design enclosed). OY. R.R. 235a 100(T) (S.H. 798 10-12-20) C. 2948 | ||