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).
Small diameter clutch, noting vibration issues at certain speeds.
| Identifier | ExFiles\Box 20\3\ Scan033 | |
| Date | 14th August 1912 | |
| R.R. 512 2 1/2 H) (X. 435. 14.12.11) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2223 X964 F354 Section 1300 . 600 Description: Small diameter clutch verg U.724. Date: 23/5/12. Report: Sheet from Y/O.{Mr Oldham} - Filed Steele - Test report. Date: 21/6/12 Report: Recd. from works Date: 28/6/12 Report: Paton 1714 Date: 24.6.12 Report: T.B.B. reports (Tested 15.6.12.) Small flywheel & spring coupling no so good as when car tried with heavy flywheel. Bad vibration between 18 & 25 m.p.h. would not call a period but is an extremely harsh vibration throughout the car, taking particular effect on Body & Dash. This occured only at full or nearly full throttle. Date: 14.8.12. Report: T.B.B. reports Engine good except when getting away. This is noticeable on most cars with small flywheel. Car 1714 Spring coupling & Small flywheel. | ||