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).
Advice regarding removable side doors to combat excess engine heat in warm weather.
| Identifier | ExFiles\Box 74\1\ scan0036 | |
| Date | 8th September 1910 | |
| C.J. 8/9/10 R16/D8910 With reference to the attached draft letter, we have found this result to be the case in other cars besides our own. Our own is also a car with a powerful engine which will, consequently, give more hot air than would naturally be obtained from a 20 H.P. car. We, therefore, advise the side doors, if very high, to be removable for the warm weather. F.H.R Handwritten Note: X393 Watermark: WYDEVL CB OXFEA 1804 DICKINSON BOND Footer: W.S. 4772 (Cooling) (F.{Mr Friese} 272 10/9/10) H.S. 3377 | ||