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 of radiator tests at Brooklands Track, recording under-bonnet air temperatures with and without a grille fitted at various speeds.
| Identifier | ExFiles\Box 87\1\ scan0066 | |
| Date | 15th May 1934 | |
| RADIATOR TESTS AT BROOKLANDS TRACK - BONNET AIR TEMPS. RECORDED (15/5/34) AIR TEMP UNDER BONNET °C. 40 30 20 10 0 GRILLE FITTED - 80 MPH. GRILLE FITTED - 60 MPH. NO GRILLE " - 80 MPH. NO GRILLE - 60 MPH. AIR TEMP OUTSIDE CAR THRO'OUT TEST - 15.5°C. A B C A B C A B C A B C A B C A B C A.{Mr Adams} B. & C. refer to stations at which readings were taken. 68. H Steadman 17/5/34 | ||