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 the performance of three different radiator types, plotting delivery rate and suction pump pressure against engine RPM.
| Identifier | WestWitteringFiles\W\May1931-August1931\ Scan016 | |
| Date | 19th May 1921 | |
| V1142 RADIATOR WITH 268 HEXAGON TUBES STD RAD WITH 4 DENTS IN EACH TUBE SQUARE TUBE RADIATOR DELIVERY GALLS/MIN ENGINE RPM SUCTION SIDE PUMP PRESS lbs/sq" DEPN lbs/sq" SUCTION SIDE PUMP 19-5-21 H.A.H. | ||