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).
Graph comparing heat transfer to oil against RPM for Peregrine, Curtiss, and Bensport engines.
| Identifier | ExFiles\Box 179b\3\ img323 | |
| Date | 8th February 1933 guessed | |
| HEAT TO OIL B.T.H.U./MIN 100 200 300 400 R.P.M. 1000 2000 3000 4000 5000 ROAD SPEED M.P.H 60 70 80 CURTISS BENSPORT PRELIMINARY FIGURES THE HEAT MEASURED DOES NOT INCLUDE THAT LOST BY NATURAL RADIATION FROM THE CRANKCASE PEREGRINE 35 LBS/□ Oil Press. 17 LBS/□ 35.35/D | ||