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).
Radiator water loss issues following modifications to the top tank and expansion.
| Identifier | ExFiles\Box 11\3\ 03-page188 | |
| Date | 14th July 1930 | |
| G.W.Hancock, Esq., Hotel de France, Chateauroux, Indre, FRANCE. To GWH.{George W. Hancock - Head Chateauroux} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}1/MJ.14.7.30. Dictated 12.7.30. We thank you for your reports. Re. Water Loss. We think most of the water loss is due to the reduction in size of the top tank. With the old standard top tank we know that if the radiator was originally filled up to half-way by the over-flow pipe with cold water, when the system was warmed up and the top water temperature reached 90°C. water started to run out of the steam pipe. We have now added 1" to the height of the matrix, so increasing the capacity of the radiator, and we have taken ½" off the top tank, so decreasing the capacity of this component for dealing with expansion. We are making some tests here but we feel convinced that more water is being lost by expansion than hitherto. Anything you can tell us with regard to preventing loss of water by splashing out on the road will be most useful but it may be that owing to this top tank alteration the general running level of the water in the top tank is higher than hitherto, and consequently splashing out takes place more easily. We note your results re. mixture strength and fan. We are sending you out the following parts :- Ex.5040/1/2, 5039. Hs.{Lord Ernest Hives - Chair}29/2/B. Leslie knows all about the single point body mounting which we arranged before the car left Derby. We | ||