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).
Three separate thermostat tests, recording temperature readings at set intervals.
| Identifier | ExFiles\Box 39\4\ Scan191 | |
| Date | 20th October 1930 | |
| THERMOSTAT TEST. 25-EX. Air temperature. 12º Half mile readings at 30 MPH. with starting temperature 63º. 63º. 63.5º. 63.5º. 64.5º. 65º. 65º. 65º. As above with starting temperature 68.5º 68.5º. 67.5º. 66.5º. 66.5º. 66º. 66.5º.. 66º. 65.5º. 65º. 65º. 65º. 64.5º. 64.5º. Car thermometer reads 66.5º. when glass thermometer in top of radiator reads 69º. G.H.Whyman. 20.10.30. THERMOSTAT TEST. 24-EX Air temperature 11.5º Half mile reading at 30 MPH. with starting temperature 67.5º. 67.5º. 67.5º. 68º. 69º. 69.5º. 69.5º. Maximum temperature reached under ordinary driving conditions 72.5º RADIATOR SHUTTERS. Open at 73º. Start to close 75º. Fully closed 67º. G.H.Whyman. 20.10.30. THERMOSTAT TEST WITH THERMOSTAT MARKED 'A' Air temperature 13º. Half mile readings at 30 MPH. with starting temperature 62.5º 62.5º. 62.5º. 63.5º. 64º. 65º. 65º. 65º. 65º. 65º Maximum temperature reached under ordinary driving conditions 69º. RADIATOR SHUTTERS. Open at 60.5º Start to close 63º. Fully closed 55º. G.H.Whyman 20.10.30. | ||