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).
Preventing petrol starvation on 20-HP models by ensuring the petrol pipe slopes downwards correctly.
| Identifier | ExFiles\Box 56\1\ Scan006 | |
| Date | 4th June 1926 | |
| X5510 W/W. Paris. (3 Copies). Bombay.(3 Copies). Madrid. Pt. - Australia. Wdr. BY.{R.W. Bailey - Chief Engineer} ER. Hs.{Lord Ernest Hives - Chair} Mr. Shaw. Mr. Trayner. L-Bassano. Hm{Capt. W. Hallam - Head Repairs}'s Dept. Hm.{Capt. W. Hallam - Head Repairs} is absent. NRC{N. R. Chandler}10/D4.6.26. Petrol Starvation on 20-HP. It is most important that the petrol pipe from the Autovac to the carburettor should slope downwards all the way to the carburettor. This point is clearly emphasized on the Drawings F.50810, sheets 1 & 2, but unfortunately, has been overlooked, as we find many cars in which the pipe is quite horizontal where it runs along the dash behind the cylinders, and in some cases it has a distinct rise in it. This is sufficient to make an air lock, especially when the pipe becomes hot and the petrol begins to give off dissolved gases, and we know definitely that a rise in the pipe actually can be responsible for petrol starvation. Every petrol pipe which has not a definite fall all the way to the carburettor should at once be bent so that it has a fall. NRC.{N. R. Chandler} WPO | ||