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).
Blueprint showing a cross-section of a 25 HP double flywheel bearing.
| Identifier | ExFiles\Box 137\4\ scan0205 | |
| Date | 16th August 1931 guessed | |
| Ex 5810 SPIGOTTED TO FLYWHEEL HOUSING 2.675 2.800 1.156 25 HP DOUBLE FLYWHEEL BEARING | ||