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 charting the effect of a radiator grille on engine cooling for a Bentley at different speeds.
| Identifier | ExFiles\Box 87\1\ scan0064 | |
| Date | 15th May 1934 | |
| EFFECT OF RADIATOR GRILLE ON COOLING (BENTLEY) TESTS CARRIED OUT ON BROOKLANDS TRACK WATER TEMP °C GRILLE FITTED (80 M.P.H) NO GRILLE FITTED (80 M.P.H) GRILLE FITTED (60 M.P.H) NO GRILLE FITTED (60 M.P.H) A, B & C REPRESENT STATIONS AT WHICH READINGS WERE TAKEN | ||