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).
Carburetion, water circulation, throttle heating, and engine performance.
| Identifier | WestWitteringFiles\T\January1929-February1929\ Scan191 | |
| Date | 25th February 1929 | |
| SECRET. FROM R.{Sir Henry Royce} (At Le CanadelHenry Royce's French residence.) c.c. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} DA.{Bernard Day - Chassis Design} PN.{Mr Northey} OWB. OY. SS.{S. Smith} CARBURATION. WATER CIRCULATION. X7080 X7230 X7250 X7180 LeC.2675. received of the valve working with shutter control in the above suggested by me for more rapid and effective heating of the throttle. As far as our experience goes it is hardly needed for ordinary even winter temperatures, but it is worth testing. One is extremely thankful to be able to avoid exhaust heating because of the valve in the exhaust, and the carburetter etc getting overheated. It is now generally agreed that under ordinary circumstances one need'nt wait for warming up, because with the mixture strengthened by the hand control the engine will take its load from cold quite satisfactorily, because the cold distribution full throttle slow speed is so good. Also I am the only one yet who has remarked upon the surprising absence of explosions in the silencer. I have written about this for several weeks, but no confirmation or contradiction so far. In the design mentioned above the water seal (gland) might be by collar having cork or other non-seizing face, and the spring external - just, say, a flat finger. I should not make the lever adjustable on the spindle, because if too easy it is always wrongly set. We can alter the length of the connecting rod. R.{Sir Henry Royce} | ||