Design changes to the petrol pump, radiator, and carburettors.
| Identifier | ExFiles\Box 5a\1\ 01-page151 | |
| Date | 1st May 1931 guessed | |
| (3) We understood however from the recent memos. that you feared interference between some of the exhaust beats affecting volumetric efficiency. We are glad to hear this is not so. PETROL PUMP. There will be a petrol pump instead of the autovac fittings. PETROL TANK VENT. There will be a central vent on the rear tank. RADIATOR CAP. This will have no ventilation or poss- ibility of spilling water, i.e. non spilling relief valve. RADIATOR. This will have shorter tubes as we understand has been adopted on the 2nd. half of 'T' series. They should be of the larger .309 thin copper tube. It will not be the higher shouldered radiator. CARBURETTERS. We hope to send to Derby in 10 days after Whitsun the drawing of both the head and carburetter (for pair or singles). Our scheme has jet control and in arranged for more effective silencing and exhaust heating near the throttle, and is less liable to get liquid petrol into the cylinders, (being vertical and having special starting device instead of strangler.) R. {Sir Henry Royce} | ||
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).