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).
Material requirements and engine alterations for the 20 HP Chassis 'P' Series.
| Identifier | ExFiles\Box 142\2\ scan0097 | |
| Date | 24th April 1929 | |
| Y4554 BY11/G.24.4.29. 20 HP. CHASSIS MATERIAL 'P' SERIES. Please note that as there is a very big possibility 'P' series will include an engine with a larger bore, but otherwise the engine will be altered as little as possible, the following parts should be held up :- Cylinder. Cylinder head. Crankcase. Piston. Gudgeon Pin. Piston Rings. Cyl. Gasket (Single pieces.) In addition it should be noted that we will include the crankshaft with larger journals and increased diameter of pins as fitted to India 4. Connecting Rods suitable for the larger diameter pin, but in length made to correspond with the present engine. The only rod we have at the moment suitable for the bigger pin has been made for the turbulent head. This at the moment is not the one which is required. AXLE. In the rear axle the following parts will be included :- New axle box slightly larger diameter. New Bevel pinion. New bevel wheel. We can alter existing dies to produce the two latter pieces - With the exception of the longer frame and propeller shaft to suit all material can be instructed for 200 sets. BY.{R.W. Bailey - Chief Engineer} | ||