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).
Modifications to the gear lever shaft for the 25HP model concerning gear control.
| Identifier | ExFiles\Box 15\5\ Scan336 | |
| Date | 13th August 1932 | |
| BY.{R.W. Bailey - Chief Engineer} FROM HDY.{William Hardy} C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} E.{Mr Elliott - Chief Engineer} C. to HS.{Lord Ernest Hives - Chair} DA.{Bernard Day - Chassis Design} X7310 HDY.{William Hardy}/M.13.8.32. x 5310 x 4027 GEAR CONTROL. We send herewith M.sch.3498., which shews modifications to the gear lever shaft for the 25HP. to prevent binding sideways, and to reduce bearing surface oil drag. The use of a spherical bearing at the outer end eliminates the possibility of binding at the worse end without increasing the size and weight of the parts. Centralising springs have been placed inside the shaft, and although of reduced dimensions, give a much lower maximum load. The pendulum lever is to be hydraulically pressed on. Our drawing may not shew the clearance between gear lever, frame, and floorboards, correctly, as we have no recent production drawings, but in any case no alteration from standard is intended. The gate should be made of B2/S. unless actual experience with the 25HP. S.M. gearbox has shewn the need for S/M.{Mr Moon / Mr Moore} Will Derby kindly adapt this scheme to Peregrine, J.3., and Phantom. The shaft size and lever strength should be kept the same for all cars. HDY.{William Hardy} | ||