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 report on an Alfa-Romeo at Col-de-la-Faucille, including performance data and vehicle specifications.
| Identifier | ExFiles\Box 24\4\ Scan173 | |
| Date | 30th May 1924 | |
| Tests on Col-de-la{L. A. Archer}-Faucille Alfa-Romeo. Weight without passengers 1430 Kilogramme = 1-8-0-15 6 pen Touring Body very light Wheel guards. TABLE DATA: Columns: Air Temp, Heat of Radiator Top, Heat of Radiator Both, Distance Tripmeter Kilometre, Wind, Height Kilometre, Ignition, Throttle, gear, Engine/min, Time, Remarks. Row 0: 21°, 76°, 76.0°, 0, 600, Mag., full, 3rd, [empty], 0, Roads remaind dry Row 1: 18.5°, 76.5°, 72.2°, 1, 40, phadmin, [empty], [empty], [empty], 1, Two Tests Taken second Row 2: [empty], 77.5°, 74.4°, 2, 50, [empty], [empty], [empty], [empty], 2, test not included as Row 3: 17.5°, 78.5°, 75°, 3, 50, [empty], [drawing], [empty], [empty], 3, plugs oiled up and stbag. Row 4: [empty], 79°, 76.1°, 4, 40, [empty], [drawing], [empty], [empty], 4, started giving trouble Row 5: 17°, 80.5°, 76.1°, 5, 60, [empty], [drawing], [empty], [empty], 5, could not get four passengers and no ballast could be got Row 6: [empty], 80.5°, 76.7°, 6, 70, [empty], [drawing], [empty], [empty], 6, would not allow stones as car was new and sold. Row 7: 17°, 81.5°, 77.2°, 7, 60, [empty], [drawing], [empty], [empty], 7, no carburettor controls Row 8: [empty], 82°, 77.8°, 8, 50, [empty], [drawing], [empty], [empty], 8, Zenith carburettor - exhaust pipe cast in cylinders Row 9: 16.5°, 84°, 78.9°, 9, 70, [empty], [drawing], [empty], [empty], 9, beehive overhead valves push rod Row 10: [empty], 84°, 78.4°, 10, 20, [empty], [drawing], [empty], [empty], 10, inlet & exhaust pipes similar to Rolls Royce but outlet pipe Row 11: 16°, 84.5°, 79.4°, 10.5, 20, [empty], [drawing], [empty], [empty], 11, 1.750" dia Row 12: [empty], 85°, 80.6°, [empty], [empty], [empty], [drawing], [empty], [empty], 12, Normal Air Temp. bottom 21° Top 18° Last row of data: 16°, 84°, 80°, 10.5, [empty], [empty], [empty], [empty], [empty], 12.52, [empty] SPECIFICATIONS: Capacity of Radiator & Engine 18 Litres = 4 gall. Radiator Diagram Dimensions: Top: 3.312", Core Height: 16.375", Core Width: 18.5", Total Height: 22.5", Bottom Outlet: 2.187" S.S.L. Tubes. Hex front & rear. Thickness of Matrix 3.125". 6 cyl. 2.99 x 4.33 4 bladed fan speed 4 to 1 approx. Axle ratio 12x46 4 gears & reverse Valve Timing Exhaust Valve opens 45° BBDC. closes 5° ATDC. Inlet Valve opens 5° BTDC. closes 50° ABDC. Tappet clearance approx .008" | ||