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).
Test report detailing oil and water pressure/flow readings at various engine RPMs.
| Identifier | ExFiles\Box 149a\1\ scan0056 | |
| Date | 12th October 1934 | |
| -2- Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}24/KW.12.10.34. 2nd Test. Oil Cooler Matrix removed, otherwise as above. | R.P.M. | Time 75 lbs. | lbs/Min. | Press. at Pump Outlet | Press in Oil Cooler Box | Press in Cyl.Head | Press in Top Water Pipe (Before Thermos) | |---|---|---|---|---|---|---| | | | | Ins/Hg. | Ins/Hg. | Ins/Hg. | Ins/Hg. | | 500 | 163 | 27.5 | .7 | .6 | .6 | | | 1000 | 45.7 | 98.7 | 2.3 | 1.6 | 1.2 | | | 2000 | 22.5 | 200 | 9.3 | 6.2 | 4.5 | | | 3000 | 14.9 | 302 | 22.9 | 15.0 | 10.5 | 6.3 | | 3500 | 13.0 | 346 | 30.4 | 19.7 | 13.5 | 8.0 | | 4000 | 11.7 | 385 | 41.9 | 26.2 | 18.0 | 10.0 | 3rd Test. Bye-Pass Pipe fitted from Cooler Box to Tank, otherwise as last test. | R.P.M. | Main Flow | | Byepass Flow | | Total | Press. at Pump Outlet | Press. in Cooler Box. | |---|---|---|---|---|---|---|---| | | Time 75 lbs | lbs/Min. | Time 75 lbs | lbs/Min. | lbs/Min. | Ins/Hg. lbs/sq | Ins/Hg. lbs/sq. | | 3000 | 18.2 | 247 | 45 | 100 | 347 | 19.7 | 12.3 | | 3500 | 16.4 | 275 | 39.8 | 113 | 388 | 27.0 | 16.0 | | 4000 | 14.6 | 308 | 35 | 129 | 437 | 35.5 | 21.0 | | ||