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 details for the Oil Pump Drive Gear on the Camshaft of a Bentley 60 Chassis.
| Identifier | ExFiles\Box 123\5\ scan0149 | |
| Date | 7th November 1938 | |
| c. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Sales 10HH BY/CS5/EH.7.11.38. Re Bentley 60 Chassis. Camshaft - Section 5090. Oil Pump - " 5170. Modification to Oil Pump Drive Gear on Camshaft. DA.{Bernard Day - Chassis Design}17/G.31.10.38. We send you herewith modified particulars of the Oil Pump Driving Gear on the Camshaft, and the Oil Pump Driven Gear, which have been calculated in accordance with the above. Camshaft Gear. (Section 5090). Blank Dia. = 1.707-2. Chordal Thickness. = .11825-1. Corrected Pitch Depth. = .06795. Dia. at commencement of 15° chfr, at ends of teeth. = 1.343-10. All other particulars as on EB.4332. Top Driving Gear - Oil Pump (Section 5170). Blank Dia. = 1.181-2. Chordal Thickness = .1413-1. Corrected Pitch Depth = .103. All other particulars as on EB.3900. Will you please instruct as required. This completes instructions for the above. Will Expl: Dept. please forward the result of this experiment, so that, if the modification is successful, we can modify our drawings accordingly. BY/CS. | ||