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Voisin C28 Aerosport
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Avions Voisin C4

Recognising that very expensive models could not support the company alone, Voisin introduced in 1921 the more economic C4. The standard body was very boxy, but the car could also be supplied as a sports torpedo or four seat open tourer or coup de ville. By 1923 the model had been developed with a small power increase and with more elegant bodywork. Front brakes were optional.

In 1924 the capacity was increased to 1328ccs and the front dynastart was fitted as standard. About 900 units were built and production ceased in 1925.

Wheelbase 112 in
Track 54 in
top speed 80 to 85 kph
Engine  
Type 4 cylinder in line sleeve valve
capacity 1248 cm3
bore and stroke 60 X 110
power output 30CV
induction Solex carburettor
valves sleeve
cooling Thermo syphon
ignition Magneto
Transmission rear wheels
clutch multi disk clutch plates
gearbox 3 speed manual