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).
The deflection of pedal components and shafts.
| Identifier | ExFiles\Box 68\1\ scan0337 | |
| Date | 25th September 1924 | |
| R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: Fig.111. Rod to indicate clamped to brkt. on Cross member. The deflection of the pedal shaft brackets were then taken and were found to be :- Clutch pedal bracket .0045" Brake pedal bracket .0015" Both brackets were deflected rearwards. ---------- Fig.1V. Clutch pedal. Connecting link. Readings taken here. The deflection of the connecting link pin was tested from the same point on the clutch pedal as the clutch pedal deflection (Fig.11.) ---------- The deflection of the operating shaft lever was then taken for each ½° of clutch pedal movement (Table 111.) Table 111. Pedal movement. Lever Deflection. 0° 0° .5° .021" 1.0° .022" 1.5° .031" 2.0° .032" 2.5° .035" 3.0° .036" 3.5° .037" 4.0° .038" contd :- Fig.V. Readings taken here. Rod to indicate clamped nut on operating shaft. | ||