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 report comparing the average of 8 R.A.E. pumps with an original R.A.E. pump on a Condor engine.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan11 | |
| Date | 22th June 1925 | |
| -2- Pump speed = .204 : 1 on the Condor engine. AVERAGE OF 8 RAE. PUMPS. REF. Expl. No. EXPERIMENTAL REPORT. R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. | Engine. R.P.M. Condor. | Pump R.P.M. | Delivery. galls. min. | Does not start to pump until R.P.M = pump speed. | Slow speed continues pumping at R.P.M. | Time taken to start delivering. | |---|---|---|---|---|---| | 696 | | | 142.5 | | 20 secs. | | 2200 | 449 | 77.3 | | | | | 2000 | 408 | 71.7 | | | | | 1900 | 388 | 64.5 | | | | | 392 | | | | 80 | | R.A.E. ORIGINAL PUMP No. 109 - fitted on Condor engine. | | | | | | | |---|---|---|---|---|---| | 715 | | | 146 | | 2 mins. 30secs. | | 2200 | 449 | 66 | | | | | 2000 | 408 | 60 | | | | | 1900 | 388 | 57 | | | | | 514.7 | | | | 105 stops pumping. | | Hs{Lord Ernest Hives - Chair}/TAG. 22. 6. 25 | ||