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).
Under-bonnet temperature issues and potential solutions for carburettors on the first Spectre models.
| Identifier | ExFiles\Box 91\4\ scan0231 | |
| Date | 1st September 1935 | |
| -2- Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}9/KW.P.9.35. With a much higher under bonnet temperature it is difficult to believe that the petrol in the Cadillac float chamber can really be any cooler than our own. As this seems to be the one outstanding fault which is likely to prevent us using carburettors in the Vee on the first SpectreCodename for Phantom IIIs, we should be glad if you could make some tests to see whether there is anything in the suggestion, and wire me if any improvement is effected by fitting the balance to atmosphere to the float chambers. Once we get over this re-starting trouble we can use a more efficient radiator, which will be a better way of overcoming the high water temperature than fitting a large fan which is likely to absorb a lot of power. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||