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).
Project memo listing drawings and giving design instructions for the Bentley 50 Engine.
| Identifier | ExFiles\Box 111\2\ scan0267 | |
| Date | 18th November 1937 | |
| Da{Bernard Day - Chassis Design}/Mc.S. c. Da{Bernard Day - Chassis Design}/Jnr.{Charles L. Jenner} c. Rm.{William Robotham - Chief Engineer} c. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} 1044 DA.{Bernard Day - Chassis Design}20/G.18.11.37. 800 BENTLEY 50 ENGINE. Herewith are the following drawings, comprising the project of the above as released to E,CD.Department :- PD.46 1st. scheme of Side Exhaust Engine. PD.47 Power cylinder head. PD.48 Oil pump, Oil system and Distributor Drive, first scheme. PD.49 Rear end of engine. PD.50 Twin Exhaust downtakes and starter motor. PD.51 Valve tappets - Power head. PD.53 Cylinder head - 4 exhaust and 4 inlet ports. PD.56 Sheet metal sump. PD.57 Relief valve. PD.60 Belt driven auxiliaries. PD.62 Ignition Distributor and Oil Pump Drive: - second scheme. PD.43 General arrangement - overhead valve engine. PD.44 " " power head engine. It is intended that, from these schemes, you should complete the design of the overhead valve engine. The information relating to the Power head engine is sent you because it is intended to design completely both engines, and in such a way that the upper part of the cylinder block alone is modified in changing from one head to the other. Da{Bernard Day - Chassis Design}/Jnr.{Charles L. Jenner} will carry the design of the power head engine to a more advanced stage than now, and it will be necessary for you to see that your designs of the conventional overhead valve engine do not prevent the carrying out of the above intention. As regards PD.48 and PD.62, it is intended that both these drive systems for the oil pump and distributor shall be designed with a view to both being costed and investigated in respect of the effects of heat, inclination of distributor etc. on their working. As regards PD.43, the auxiliaries are to be belt driven. As regards PD.50, Da{Bernard Day - Chassis Design}/Jnr.{Charles L. Jenner} will carry out some | ||