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 running backwards on Chassis 7-CA, fuel pressure issues, and a sketched modification for the needle valve.
| Identifier | ExFiles\Box 180\M3\M3.3\ img008 | |
| Date | 30th January 1918 | |
| R.R. 25 A (400 T) (S C 896 16-2-16) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 154 D [STAMP: RECEIVED 2 FEB 1918] EH. from R M II ORIGINAL R1/W30.1.18.. Re - Chassis 7-CA. X.682. X.3214. REC You will note in a previous memo that this engine ran backwards, both on the Remy and the magneto when attempting to start by hand. It is certainly not like one of our cars for amiability. I will give you a sketch of a suggested arrangement for a spring combined with a dead weight for the needle valve. We have also found that the probable reason why you modified the pump was that we believe the fuel pressure gauge does not read at all until the pressure is well over a pound. It is quite likely that this car has been running with three or four pounds pressure. We thought at first that this was the cause of the needle valve failure but it is not so. [Diagram of a valve assembly with the following handwritten labels:] - collar to limit lift - Cancel screw - sliding weight - spring of any strength. - fixed collar - end designed as recently instructed - See LeC. drawing, thus:- [sketch of a four-pointed star] [Handwritten notes at bottom:] Object to avoid valve leaving seat by vibration. but better workmanship than model. [Signature] | ||