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).
Summary of decisions and actions regarding engine component development.
| Identifier | ExFiles\Box 30\1\ Scan279 | |
| Date | 12th November 1935 | |
| (sheet 2) Valves and Camshafts. Swdl.{Len H. Swindell} Rm.{William Robotham - Chief Engineer} stated that stronger valve springs are not required and BY.{R.W. Bailey - Chief Engineer} will, therefore, instruct the present springs. Rm.{William Robotham - Chief Engineer} stated that stellited KE.965 exhaust are required, and BY.{R.W. Bailey - Chief Engineer} will instruct accordingly. Latest position re wear of cams and tappets - Rm.{William Robotham - Chief Engineer} stated that fescolised tappets were giving the best results. It is important to examine these parts from 2-S-1 as soon as possible. Experiment to LeC.4675 and LeC.4673 have not yet been tested. Rm.{William Robotham - Chief Engineer} to try out and report as soon as possible. Sparking Plug Terminal. Agreed to instruct short skirt type terminal inside the Vee and long skirt type terminal outside the Vee. By.{R.W. Bailey - Chief Engineer} will instruct. Ignition and Distributor. Hs{Lord Ernest Hives - Chair}/Wst. has not yet reported on the tests asked for in E/JNR.{Charles L. Jenner}1/HP.12.11.35. Rm.{William Robotham - Chief Engineer} to urge. Lubrication of contact braker/cam was not discussed. Fan. Agreed to go ahead on production as slowly as possible with the present standard fan. Design asked for particulars of the RR. type V.P. fan as tested on 2.S.1. Rm.{William Robotham - Chief Engineer} agreed to let Design have this fan for inspection as soon as possible. With regard to the merits of the variable speed fan, this is to be discussed with Da.{Bernard Day - Chassis Design} and Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} on their return from U.S.A. Starter Motors. Rm.{William Robotham - Chief Engineer} stated that the present motor was not sufficiently powerful to turn the engine over when cold. BY/RD. in conjunction with E.{Mr Elliott - Chief Engineer} is to complete a modified design of larger diameter and look into the possibilities of increasing the gear ratio. It was agreed that it was not possible at this stage to introduce the Hs{Lord Ernest Hives - Chair}/Wst suggestion of a sliding pinion operated by a solenoid. | ||