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).
Modification to the clutch pedal stop for the Wraith and other models.
| Identifier | ExFiles\Box 147\5\ scan0258 | |
| Date | 24th February 1938 | |
| To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} Da.{Bernard Day - Chassis Design} c. Hs.{Lord Ernest Hives - Chair} 635 Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler}3/MH.{M. Huckerby}24.2.38. CLUTCH PEDAL STOP. WRAITH ( AND OTHERS). In order to prevent the clutch pedal from stopping on the crankcase stop and conveying engine fidget to the foot, a stop consisting of rubber washers, (see sketch) threaded on the pedal stem has been tried with satisfactory results, and is inconspicuous, does not require a hole in the carpet, easily adjustable and cheap. We have made the washers from rubber tube .480 bore x 1.250 outside dia., durometer 55 (40 was first tried but found rather too soft). We recommend making the first or top washer of a depth to stop the pedal .250 from the crankcase stop when un-compressed, and this should have vulcanized to it a plain .500 S/M washer, preferably plated to prevent rust. The other washers to allow for pedal adjustment would be .675 each deep, to allow .050 for compression. This scheme is equally suitable for P.III and Bentley as all have .500 dia. pedal stems. [Text from sketch] PLAIN WASHER VULCANIZED ADDITIONAL ADJUSTMENT Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} MH{M. Huckerby} .250 STOP ON CRANKCASE. | ||