Specifications and proposals for engine and vehicle components.
| Identifier | ExFiles\Box 5a\1\ 01-page124 | |
| Date | 18th March 1934 | |
| - 2 - CRANKCASE. The crankcase would be the present standard type, with provision for the idler timing gear being out of line for adjustment purposes, and also include the new dynamo drive where the bearings are not housed in the cover. CRANKSHAFT. We propose to use the present crankshaft with balance weights. The balance weight scheme would be a percentage balance on each pin. CRANKSHAFT DAMPER. The low inertia damper tested out on 18-3-4 will be included. PISTON. We accommodate the difference in height of the engine by a lengthened piston and not by increasing the connecting rod, as this is the cheapest and most satisfactory way of arriving at the result required. CARBURETTER. To justify the use of the Japan(Experimental Engine) we must get more power out of it. To attain this demands a different carburetter. As we have had on Japan(Experimental Engine), a Zenith carburetter working satisfactorily for the increased power, and we propose to get the Zenith people up and put the problem to them of obtaining the refinements which we agree are necessary in order to use the Zenith satisfactorily. As a standby to ensure having something ready for production we could use in an emergency our present type carburetter but this would mean a drop in power, and would only be looked upon as a temporary expedient. MOUNTING OF ENGINE. We propose to use the diamond mounting which in turn requires a tie from the top of the spare wheel carrier to the dashboard in order to prevent the former joggling. The need for supporting the side spare wheel prevents us carrying the bonnet over the dash, as we do not see any neat way at the moment of producing a support, but this matter will be looked into further. FRONT APPEARANCE OF CAR. | ||
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).