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).
Series of radiator comparison tests under specific conditions.
| Identifier | ExFiles\Box 29\3\ Scan304 | |
| Date | 14th April 1931 | |
| To G.Radcliffe. From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} 8788 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}1/KT.14.4.31. RADIATOR TESTS. We want you to conduct the following radiator tests. The first series of tests will be as previously under the following conditions. (1) All out, vertically louvred bonnet. (2) All out, no bonnet ventilation. (3) 60.M.P.H. no bonnet ventilation. We want you to compare, in the order specified, these radiators. (1) Small hexagon tubes. American. (2) Square tubes E.81389. 6/7½. (3) Standard 4 indentations E.79448/9. (4) Large hexagon tubes. American. We hope that you will be able to test two radiators per day so that the tests will be completed in two days. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||