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).
Performance data and specifications for the S.U. Petrol Pump No. MD.3.
| Identifier | ExFiles\Box 27a\2\ Scan273 | |
| Date | 30th October 1933 | |
| FILE X2677. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} 30.10.33. S.U. PETROL PUMP NO. MD.3. NOW FITTED TO 3.B.IV. We attach herewith Temperature - Delivery Curves. As the above pump was required for 3.B.IV. chassis we have only tried Ethyl fluid and DTD.224. Maximum delivery of the pump through open feed pipes = 166 pts/hr. The capacity of the twin pump head with diaphragms at the top of the stroke = 44 ccs. Capacity with diaphragms at the bottom of the stroke = 54 ccs. This brings the output/stroke to 10 ccs., and working on a 166 pts/hr. delivery as above brings the number of strokes/min to 158. Hs{Lord Ernest Hives - Chair}/J.{Mr Johnson W.M.} C. Bowering. | ||