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).
Test results for an exhaust-heated throttle using a 5% paraffin fuel mixture.
| Identifier | ExFiles\Box 50\3\ Scan154 | |
| Date | 1st June 1939 | |
| VS.{J. Vickers} X4305 TESTS TAKEN WITH 1.EX FITTED WITH EXHAUST HEATED THROTTLE - 5% PARAFFIN Headers: With hot spot., Temp: of water in radiator. start. finish., Temp. of throttle. start. finish., Length of test miles., Conditions, Tests. Row 1: ON, 79°C 97°C, 76°C 54°C, 1, Full throttle with accelerator. 10 M.P.H., 1 Row 2: ON, 76°C 98°C boiling., 76°C 158°C, 1, Full throttle with hand control. 10 M.P.H., 2 Row 3: OFF, 79°C 96°C, 56°C 41°C, 1, Full throttle with accelerator. 10+ M.P.H., 3 Row 4: OFF, 79°C 80°C, 36°C 36°C, 2, 20 M.P.H. straight run, 4 Row 5: ON, 79°C 98°C, 76°C 64°C, 1, Full throttle with accelerator. 10 M.P.H., 5 Row 6: ON, 76°C 76°C, 76°C 144°C, 2, 20 M.P.H. straight run., 6 Row 7: ON, 70°C 88°C, 76°C 110°C, 1, Full throttle with accelerator. 10 M.P.H. Valve reset., 7 Row 8: ON, 76°C 96°C, 76°C 146°C, 1, Full throttle with hand control. 10 M.P.H., 8 Row 9: ON, 78°C 76°C, 76°C 178°C, 2, 30 M.P.H. straight run., 9 Row 10: ON, 76°C 78°C, 70°C 178°C, 2, " " ", 10 Row 11: ON, 76°C 78°C, 80°C 190°C, 2, 40 M.P.H. straight run., 11 Row 12: OFF, 79°C 76°C, 31°C 31°C, 2, 30 M.P.H. straight run., 12 Row 13: OFF, 79°C 73°C, 31.5°C 31.50°C, 2, 40 M.P.H. straight run., 13 Row 14: OFF, 79°C 78°C, 31.5°C 31.5°C, 6 times, 10 to 40 M.P.H. accelerator., 14 Row 15: OFF, 78°C 75°C, 31.5°C 31.5°C, 6 times, " " ", 15 Left margin text: R.H. Ptg.Co. 25M-6-39 G 3047 | ||