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).
Specification sheet for vehicle buffer clearances when empty and when carrying four passengers.
| Identifier | ExFiles\Box 91\4\ scan0063 | |
| Date | 3rd July 1935 guessed | |
| 3-S-1. Buffer Clearances - Empty. Front N.S. O.S. Bump 1 1/2" 1 3/8" Rebound 1.11/32" 1.13/32" Rear N.S. O.S. Bump 5.1/16" 5.1/8" With 4 Passengers. Front N.S. O.S. Bump 1" 1 1/4" Rebound 1 1/2" 1 3/8" Rear N.S. O.S. Bump 4.3/16" 4.5/16" | ||