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).
List of engineering changes and test results for various vehicle components.
| Identifier | ExFiles\Box 154a\3\ scan0279 | |
| Date | 16th June 1937 guessed | |
| -3- N.S.4661 N.S.4592 Screw threaded cones for synchromesh 9° top and 3rd 8° 2nd. Sheet issued. N.S.4414 4434 Cadillac Gears. Have now completed 30,000 miles. Experience required has been gained. Not intended for standardisation. N.S.4537. Larger end location washer at front end of side shaft in gearbox. Suitable for standardisation. Ex.25331. Bearing on 3rd.motion shaft. Experience required for use with overdrive box. Satisfactory. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rm{William Robotham - Chief Engineer}/IMS. Reduced poundage on elector sideways spring. Instructed for production. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Propeller shaft sliding joint at rear. Sheet issued. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rear axle stiff half shafts. Sheet issued. G.84688/98. Larger thrust washers for differential pinions. Sheet issued. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Gearbox engine stay to reduce clunks. Standardised. N.S.4756/7/8. Wraith Wheel Movement. Sheet issued. Faults were forging cracks, bijur pipes and buffers. Rm{William Robotham - Chief Engineer}/Les.{Ivan A. Leslie} Rear Springs and fittings. Firth drawing No.201. Sheet issued. | ||