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).
Modifications to the car's induction system to better suit current petrol quality and winter conditions.
| Identifier | ExFiles\Box 50\3\ Scan014 | |
| Date | 24th January 1921 | |
| X 4305 To EP. {G. Eric Platford - Chief Quality Engineer} from R. {Sir Henry Royce} " Hs. {Lord Ernest Hives - Chair} c. to CJ. c. to Wor. {Arthur Wormald - General Works Manager} c. to Wd. {Mr Wood / Mr Whitehead} c. to HL. c. to PN. {Mr Northey} c. to HM. {Capt. W. Hallam - Head Repairs} c. to R.R. Of America. (For attention of OY). X4305 RE PETROL. X 4298 I conclude it is a mistake to demand a petrol for testing of a given standard, if that standard is better than the cars are likely to meet with in service, in fact we should test with fuel rather below the average. Certainly it appears that our cars want modifying in the induction system to suit the present fuels and winter time, even in England and france as well as U.S.A. we must therefore make these alterations as quickly as possible. The shortcoming is not in the carburetter, which is well heated by water. The thermostat is now a standard fitting i understand, and keeps the cylinder cooling water as hot as it is practical to keep it. so that we must do some or all of the vollowing :- (1) Keep the air under the bonnet hotter. (2) Modify the induction pipe so that it is heated at the junction by the exhaust. (3) Supply heated air to the carburetter. (4) It may also be necessary to fit in addition, or instead of the primer, some modifications to better keep the engine running after starting. R. {Sir Henry Royce} 0088 D (03-8-'11 '6H''H'S)L001 VSSZ ZI H | ||