Test on a 25/30 HP chassis concerning a filter and other differences between cars.
| Identifier | ExFiles\Box 101\1\ scan0171 | |
| Date | 27th March 1936 | |
| To E. {Mr Elliott - Chief Engineer} from Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} c. to Sg. {Arthur F. Sidgreaves - MD} c. to Da. {Bernard Day - Chassis Design} X500a Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} 9/KW.27.3.36. 25/30 HP. Chassis. Replying to E.8/HP.23.3.36. We have carried out a test cutting out the filter on Hancock's car, and it made no appreciable difference. There are two other main differences between these cars - (1) The mounting of the petrol pump. (2) The arrangement of the induction pipe hot-spot. As far as we can ascertain at present, the latter undoubtedly has a bearing on the trouble, and a report will shortly be issued. On the Ph.III, where the flow of petrol through the filter is relatively greater than on the 20/25, this does appear to have some effect on starvation at high speeds on the road, though we have been unable to reproduce the trouble on the test bed. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} | ||
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).