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 of a hub for fitting a 20 HP damper.
| Identifier | ExFiles\Box 105\3\ scan0245 | |
| Date | 11th May 1932 guessed | |
| Hs{Lord Ernest Hives - Chair} 607 E 53691 E 53690 ·540 ·100 Rd ·250 Rd 2·187 DIA 2·375 DIA 2·300 ·300 ·150 ·925 5·000 DIA 5·198 DIA 6·350 DIA THESE SURFACES TO BE POLISHED SMOOTH FOR DETAILS OF INTERNAL DIMENSIONS, KEYWAYS THREADS AND OIL GROOVES SEE E57784 HUB FOR FITTING 20 HP DAMPER L.C 166S TO J3 | ||