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).
Design of a three-cylinder oil pump for experimental crankshaft testing.
| Identifier | ExFiles\Box 42\2\ Scan045 | |
| Date | 13th July 1918 | |
| X.3289. R.R. 235 A (400 T) SC.5501 9-16 To From E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to EH. c. to EFC. X.3289.A. X.3294. X.2981. E2/G13.7.18. RE OIL PUMP FOR CRANKSHAFT TESTING & OTHER EXPERIMENTS. Referring to your visit to West WitteringHenry Royce's home town, you will recollect that the construction of an oil pump for general experimental work was discussed. I have a few short written notes on this matter, which I set out as follows.- Mr. Royce proposed to make a two or three cylinder vertical oil pump (three cylinder now finally decided upon), for crankshaft testing. Two cylinders only of this pump would be used, each cylinder being connected to an aero engine cylinder on a crankcase, so as to obtain alternate loadings on crankpins on either side of the dead centre of the crankshaft which was anchored at one end, as in diagram. - [Diagram of a piston and connecting rod assembly] It was suggested at the time that the pump rams should have a working bore of about 1", which would be sufficiently large for the experiment under consideration. Nos. 5 and 6 cylinders, say on A or B side, would be selected for connection to the oil pump, and the crankshaft would be anchored at the propeller end. This test should provide a means of finding out the comparative value of any crankshaft modifications. (Contd.) | ||