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).
Record of a heat test conducted on chassis number 774.
| Identifier | ExFiles\Box 78\3\ scan0037 | |
| Date | 16th October 1908 | |
| Heat Test. Chassis 774 Oct 16/08. 3500. X496 Flat tube radiator 2" deeper. Start with engine & water cold. Engine 600 revs. bonnet closed & pump disconnected. Water in radiator got to maximum in 25 minutes and still keeps at 98° C for further 30 minutes. Foot boards, temperature rise to 52° C and would have risen slightly more as it was still rising slightly and had only been run one hour. | ||