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 modifications relating to levers, clutch bearings, and clutch shafts.
| Identifier | ExFiles\Box 93\3\ scan0049 | |
| Date | 31th May 1935 | |
| - sheet 2 - HDY.{William Hardy}3/HP.31.5.35. The levers are given an increased tendency to fly forwards compared with N. Sch.4256, but we are now uncertain whether this is necessary. Further information will be sent. (4) Modifications to meet RHC.{R. H. Coverley - Production Engineer}2/MS.8.4.35. HDY.{William Hardy}1 and 2/HP.26.4.35. N.Sch.4472. (5) Modifications to bearing at the rear of clutch. N.Sch.4491. Hdy.{William Hardy}1/HP.13.5.35. A special ball bearing is required and a pattern for the aluminium back plate. One or two slight modifications have been made to this scheme by N. Sch.4507. (6) Clutch Shaft.with Castellations in place of serrations. N. Sch.4507. HDY.{William Hardy}1/MN.29.5.35. HDY.{William Hardy} | ||