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).
Letter discussing test results and design considerations for bonnet mountings and radiators.
| Identifier | ExFiles\Box 11\3\ 03-page387 | |
| Date | 3rd July 1931 | |
| 87941 To G.W.Hancock Esq., Hotel de France, Chatearoux, Indre, FRANCE. From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}9/MJ.3.7.31. Many thanks for your notes of the 30th., 1st., and also Leslie's note containing a complete resume of the tests you have done on bonnet mocks. We note in these tests you make no reference to the front wing movement. We should like to know whether you do find that the mounting of the radiator can appreciably affect the movement of the front wings. We note that in the best compromise you reach the radiator was almost entirely controlled by the bonnet. We should like to know how the steering was affected by this mounting and whether you expect the bonnette stand up to the stresses to which it will undoubtedly be subjected. We should like you to give us sketches whenever you can so that we can ascertain clearly what you have done. We note your radiator figures and should say from them that the Cambridge thermometer is too erratic to be of any value. One point we are very interested in is whether the anti-spill radiator cap does any good. We anticipate that you may be able to run with the Negretti thermometer shewing 100º and yet lose no water. This should be taken into account because a radiator cap is an expensive fitting and with it we might be able to get away with the large tube radiator, thus saving money on the matrix. We shall be interested to hear the figures of the small tube radiator as soon as you can get a test. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||