The potentialities of the wooden lightweight single-seat
fighter were under investigation in several
countries during the late 1930s, an Italian proponent of
the concept being Ing Sergio Stefanutti. Working at the
Societa Aeronautica Italiana of Ing Angelo Ambrosini,
Stefanutti developed the S.107 lightweight fighter from
the S.7 tandem two-seat aerobatic trainer and competition
aircraft. This was flown for the first time early in 1940, and was powered by a 515hp Isotta-Fraschini
Gamma R.C.35-I 12-cylinder inverted-Vee air-cooled
engine. It carried an armament of one 7.7mm machine
gun. As initially flown, the S.107 was fitted with a long,
faired windscreen extending over the engine in an
attempt to reduce aerodynamic drag. As this elongated
transparency was found to impair vision from the cockpit
it was replaced by an orthodox stepped windscreen.
Outstanding performance was demonstrated at Guidonia,
and progressive development of the basic design
led to the S.207, the sole example of the S.107 being lost
meantime in an accident on 18 July 1941.
| Take-off weight||1600 kg||3527 lb|
| Empty weight||1280 kg||2822 lb|
| Wingspan||9.00 m||30 ft 6 in|
| Length||8.00 m||26 ft 3 in|
| Height||2.40 m||8 ft 10 in|
| Wing area||13.10 m2||141.01 sq ft|
| Max. speed||500 km/h||311 mph|
| Range||800 km||497 miles|
"A 515hp Isotta-Fraschini Gamma R.C.35-I 12-cylinder inverted-Vee air-cooled engine..."
I would have paid just to hear that engine run up!
Do you have any comments about this aircraft ?