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).
Radiator temperature test results with readings taken at various speeds and locations.
| Identifier | ExFiles\Box 77\4\ scan0140 | |
| Date | 5th January 1920 guessed | |
| Contd. -2- (4) Expl. Radiator. Tests as No. 1. - ¼ mile Readings. To Ticknall. Water temp. air. M.P.H. 60º C 34º F standing 62 " " 30 63 " " " 65 " " " 63½ " " " 63 " 34½ºF " From Ticknal Water temp. air. M.P.H. 61º C 34½ºC standing 63½ " " 30 61½ " " " 59½ " " " 58½ " " " 58 " " " R-R Radiator. Temperature Test - London Road 3 miles. Up. Water Air M.P.H. Down Water Air M.P.H. 1 66ºC 9.5ºC 30 66ºC 9.5ºC 30 2 " " " " " " 3 " " " " " " Ticknall Hill. Start. Water. 64ºC. 20 MPH. 64ºC return 66ºC. 30 " 65 " bottom 63 " 35½ " 66 " top 66 " | ||