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).
Carburation tests for the 36-EX model, detailing modifications and performance results.
| Identifier | ExFiles\Box 93\2\ scan0166 | |
| Date | 3rd June 1936 | |
| 4308 To E.{Mr Elliott - Chief Engineer} c. to By.{R.W. Bailey - Chief Engineer} c. to MX.{John H Maddocks - Chief Proving Officer} Hs{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies}4/KW.3.6.36. 36-EX - Carburation Tests. The carburettor on this car has been modified in accordance with Hs{Lord Ernest Hives - Chair}/GR.{George Ratcliffe}5/JH.26.5.36, the alterations being - (1) A single base hole of 58 morse instead of 4 holes. (2) The petrol level lowered to 5/8". (3) The bypass jet reduced from .062" to .055". Performance tests carried out before and after the modifications had been made show a possible loss of 2 M.P.H. at the maximum speed, but to prove this the car will be tested at Brooklands. There are no signs of building up or luffing, although in coasting there is a slight spitting in the exhaust silencer. The maximum under-bonnet temperature obtainable by blanking off all free air passages was 70°C. No difficulty was experienced in starting up after a stop of 10 minutes. Hs{Lord Ernest Hives - Chair}/F.Dodd. | ||