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).
Cross-section diagram and gear ratio table for a Maybach transmission for large vehicles.
| Identifier | Morton\M19\ img128 | |
| Date | 2nd March 1931 guessed | |
| Engine end 41245 Section Through New Maybach Transmission for Large Motor Cars, Buses and Utility Vehicles Speed IV III II I Ia Reverse Reduction 1:1 1:1.5 1:2 1:3 1:4.5 1:4.5 Over gears Direct 1-2-4-3 3-4-5-6 1-2-5-6 1-2-7-8 1-2-7-9-10-8 | ||