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).
Photograph and details of a 1st speed driving gear with a suspected crack and signs of picking up.
| Identifier | ExFiles\Box 99\4\ scan0261 | |
| Date | 19th March 1941 | |
| CHASSIS, I.B.50. GEARBOX B.III.NO 3. 1ST SPEED DRIVING GEAR PICKING UP CRACK SUSPECTED MILEAGE 16519 19.3.41 | ||