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).
Test report on carburettor modifications to cope with fuel flooding under various conditions.
| Identifier | ExFiles\Box 93\2\ scan0137 | |
| Date | 20th February 1936 | |
| -2- Hs{Lord Ernest Hives - Chair}/Swd1:S.JH 20.2.36. A further test was carried out at the request of E.{Mr Elliott - Chief Engineer} with the needle held only .018" off its seat, equivalent to a piece of dirt and under this condition, with the 3/16" dia. pipe, the gap in the throttle at the slow running position just catered for the amount issuing from the discharge jets without any building up. Into the overflow pipe from the float chamber a 3/16" pipe is connected in the form of a Y piece and this easily copes with the leak past the accelerator pump spindle; From the tests we have carried out by substituting the 3/16" dia. pipe by 5/16" pipe and corresponding banjo from the float chamber cover to the main drain pipe, the scheme Lec.4937 copes with all conditions of flooding either on level or on a gradient of 1 in 5 and we recommend that this be standardised for production. Hs{Lord Ernest Hives - Chair}/L.H.Swindall: | ||