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).
Line graph comparing the cooling efficiencies of a Marston Mark III radiator matrix with and without shutters and a grille, tested on a Bentley 3B IV.
| Identifier | ExFiles\Box 87\1\ scan0089 | |
| Date | 8th September 1934 | |
| SHEET 2 BENTLEY RADIATOR COMPARISON OF COOLING EFFICIENCIES OF STD. 84 MM MARSTON MARK III MATRIX WHEN FITTED WITH SHUTTERS & FITTED WITH GRILLE. TESTS CARRIED OUT AT BROOKLANDS TRACK ON BENTLEY 3B IV SEPT 4&5 1934 AIR TEMP. TO BOIL MATRIX ALONE SHUTTERS FITTED (FIXED OPEN) GRILLE ONLY GRILLE WITH DEFLECTING SLATS 30 M.P.H FULL THROTTLE 45 M.P.H. FULL THROTTLE 60 M.P.H CRUISING 82 M.P.H FULL THROTTLE C.S. STEADMAN 8-9-34 | ||