Austin Seven group S (1923)

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Austin, straight 4 cyl, 4 stroke, petrol engine
55.88 x 76.2 mm
747 cc
10.5 HP @ 2400 rpm
Sports '30: 24 HP @ 5000 rpm
S/c '30: 33 HP @ 5000 rpm
cast iron block and head, aluminium alloy crankcase
2 ball main bearings at the front and 1 roller bearing at the back, big end bearing diameter 33.34 mm
side camshaft with overhead valves (OHV), 2 valves/cyl - 8 valves total
water cooled with thermosiphon (no water pump)
splash-lubricated crankshaft

3 speed manual non synchromesh gearbox
final drive, 4.4:1, 4.9:1, 5.6:1
front suspension, dead Front Axle with Semi-Elliptical Transverse Leaf Springs
rear suspension, Live Rear Axle with Quarter-Elliptical Leaf Springs
4-Wheel Drum Brakes
Length, 3023mm
Width, 1588mm
wheelbase, 1905 mm (75")
f/r track, 1016 mm (40")
360 kg

Results in Endurance Races

Car entry, chassis number Car number/ result
Targa Florio Le Mans Spa Guipuzcoa
Date 25/4 13/6 4/7 22/7
Team 540km 24h 24h GP
Ignazio Zubiaga #30, 15th
Starts/finishes 1/1 1/1


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