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).
Engine performance, carburetter upgrades, radiator corrosion, and new features for a 10,000-mile test car.
| Identifier | ExFiles\Box 19\5\ Scan053 | |
| Date | 11th April 1930 guessed | |
| -3- system that allows us to mount our engine flexibly, we always get a smoother and more silent car. Also, Mr. Lovesey has been doing some work on the engine and we have had a car running with twin Solex carburetters. The performance with the Twin carburetter is very definitely better than anything we can obtain with the single carburetter. We get fatter torque curves, which give us extra power at the useful speeds. With Twin carburetters we can immediately increase the power 12 to 15% at 1500 R.P.M. The corrosion of the radiators, of which you will remember we had an epidemic, has now died down and the preventative methods which were adopted appear to have been successful. Apart from the left-hand car which we propose bringing to Le CanadelHenry Royce's French residence, we are sending a Standard Phantomll car to run a 10,000 miles test. The new features on this car are :- Hardened Nitro Alloy Crankshaft, large dia. Clutch with friction surface on the driven member. Improved oiling from the gearbox to the clutch spigot. Radiator with thermostatically operated shutters (We find now that we can get thermostats made in England). Modified radiator mounting. Radiator complete in Staybright material. Extra oil to the cylinders (This appears to be working out very well). Central lubrication connected up to both axles. | ||