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).
Summary of test results detailing engine cooling performance under various speeds and radiator configurations.
| Identifier | ExFiles\Box 82\5\ scan0022 | |
| Date | 5th March 1937 guessed | |
| SUMMARY OF TEST RESULTS | CONDITION OF TEST | TOP WATER TEMP (RAD) | BOTTOM WATER TEMP (RAD) | TEMP AT REAR OF CYL. HEAD | AIR TEMP | UNDER BONNET TEMP BEHIND FAN | TEMP RISE ACROSS ENGINE | CRITICAL AIR TEMP | |---|---|---|---|---|---|---|---| | (1) MARSTON Mk VI 52 M.M. MATRIX WITH Marston SHUTTERS (NO HEAD LAMPS FITTED) - 30 M.P.H. FULL THROTTLE | 81.4 | 68.4 | 80.0 | 12.0 | 51.8 | 13.0 | 30.6 | | (2) 45 M.P.H. FULL THROTTLE OTHERWISE AS (1) | 80.5 | 66.7 | 79.0 | 12.0 | 48.0 | 13.8 | 31.5 | | (3) FULL SPEED - 88.5 M.P.H. OTHERWISE AS (1) | 78.5 | 63.3 | 76.5 | 12.5 | 39.3 | 15.2 | 34.0 | | (4) MARSTON Mk VI 52 M.M. MATRIX, BUT NO SHUTTERS. HEAD LAMPS FITTED. 30 M.P.H. FULL THROTTLE. | 67.0 | 52.0 | 64.0 | 9.0 | 35.0 | 15.0 | 42.0 | | (5) AS (4) BUT NO HEADLAMPS FITTED. 30 M.P.H. - FULL THROTTLE | 68.0 | 53.5 | 65.0 | 9.0 | 36.0 | 14.5 | 41.0 | | (6) AS (5) BUT 45 M.P.H. FULL THROTTLE | 64.7 | 51.5 | 62.0 | 8.5 | 32.5 | 13.2 | 43.8 | | (7) AS (5) BUT FULL SPEED 88.5 M.P.H. FULL THROTTLE | 63.5 | 49.5 | 62.0 | 10.0 | 29.0 | 14.0 | 46.5 | | (8) STANDARD RADIATOR SHUTTERS OPEN. LAMPS FITTED. 30 M.P.H. FULL THROTTLE | 77.5 | 61.6 | 76.0 | 10.0 | 36.5 | 15.9 | 32.5 | | (9) AS (8) BUT 45 M.P.H. FULL THROTTLE. | 73.5 | 59.0 | 71.5 | 10.0 | 33.0 | 14.5 | 36.5 | | (10) AS (8) BUT Full Speed 88.5 M.P.H. - FULL THROTTLE | 68.5 | 54.0 | 66.5 | 10.0 | 29.0 | 14.5 | 41.5 | | (11) AS (10) BUT NO LAMPS | 68.5 | 54.5 | 66.5 | 11.0 | 29.0 | 14.0 | 42.5 | Side text: FITTED GRILLE NO GRILLE OR SHUTTERS STANDARD | ||