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 and water temperature performance during a road test in Scotland.
| Identifier | ExFiles\Box 78\3\ scan0007 | |
| Date | 21th September 1909 | |
| R.R. 148 (20 H) (F 148. 17.6 09) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 103. 3500 X496 19th test congested Honboard & Radiator Taken by Mr Johnson in Scotland ex Walles report 20/9/09 Up Glenshee to Ballater & back from Pitlochry. Max te. rise of Water 54 1/2° from 26° Surrounding air 12° C CP 21/9/09 | ||