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).
Design suggestions for a petrol reserve device in the Autovac system.
| Identifier | ExFiles\Box 40\4\ Scan295 | |
| Date | 14th February 1929 | |
| BY.{R.W. Bailey - Chief Engineer} from DA.{Bernard Day - Chassis Design} c. to SG.{Arthur F. Sidgreaves - MD} Hs.{Lord Ernest Hives - Chair} X3579 DA{Bernard Day - Chassis Design}1/M14.2.29. SS.{S. Smith} PETROL SUPPLY - AUTOVAC. X.3579 X.7510 With reference to the proposed reserve contained in the autovac tank, we send herewith N.sch.2828/9 shewing suggestions for the reserve device. N.sch.2828 is Mr. Royce's needle valve proposal operated by a toggling lever. We do not know the best height for the main standpipe, and suggest that Derby should experimentally determine it. We have intentionally made the needle valve rather small so that the driver will be compelled to go slowly when on reserve. We have increased the holes in the cork faced tap from .218 to .250 as recently requested by the Expl: Dept: On. N.sch.2829 we suggest an alternative in which the reserve mechanism is all contained in the cork faced tap, as this appears to us to be simpler and possibly less liable to be overlooked after use. We believe that you obtain the cork faced taps from outside so we have not shewn any details other than just the drilling. DA.{Bernard Day - Chassis Design} | ||