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).
Diagram and specifications for Alfa Romeo gear ratios.
| Identifier | ExFiles\Box 124\5\ scan0042 | |
| Date | 18th February 1932 | |
| ALFA ROMEO GEAR RATIOS 1ST MOTION 3RD MOTION 17 C.M 27 20 3RD 24 24 2ND 20 29 1ST 15 2.626 2ND MOTION AXLE 4.27 3RD 1.32 2ND 1.905 1ST 3.06 18 FEB 1932 | ||