Test report on engine vibrations without a slipper wheel for a 48-PK car with a standard 40/50 engine.
| Identifier | ExFiles\Box 25\3\ Scan131 | |
| Date | 17th December 1924 | |
| X634 17.12.24. 48-PK CAR. X3056 STANDARD 40/50 ENGINE. Engine vibrations without slipper wheel. Top direct. M.P.H. M.P.H. 29 to 31 Retard vibrations. 35 " 36 rough 60 to 50 42 " 43 very smooth from 50 downwards. 50 " 54 M.P.H. M.P.H. 3rd. gear. Front 3 cyls. only. 14 to 16 Rear 3 cyls. firing only. 23 MPH. to 24 MPH. 20 " 22 23 MPH. to 24 MPH. 28 " very sharp. 24 " 25 29 " " 30 " 34 " to 36 MPH. 28 " 29 34 " " 36 very much worse than rear cyls. 34 " 36 Hs {Lord Ernest Hives - Chair} /GWH. {George W. Hancock - Head Chateauroux} | ||
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).