Having had a root around on t'internet the figures quoted below, if correct, even if averaged out, would seem to put the 150 in the B movement deck bracket & the 180 in the A...Just. So pays yer money and takes yer choice !
150 hp:at sea level 193km/h (120mph), at 2,000m-187km/h (116mph), at 3,000m-180km/h (112mph), at 4,000m-174km/h (108mph)
180 hp: at 2,000m 212km/h (132mph), at 3,000m-204km/h (127 mph), at 4,000m-200km/h (124mph)
Putnams "The Aeroplanes of the Royal Flying Corps (Military Wing).
Data from Dr. James J. Davilla, Arthur M. Soltan - French Aircraft of the First World War:
SPAD 7 / 150 hp Hispano Suiza 8
Aa
Span: 7.822m
Length: 6.080m
Height: 2.200m
Wing Area: 17.85 sq.m
Empty weight: 500kg
Loaded weight: 705kg
Maximum Speed:
sea level: 193 km/h
2000m: 187 km/h
3000m: 180 km/h
4000m: 174 km/h
Climb:
2000m: 6 min 40 sec
3000m: 11 min 20 sec
Ceiling: 5500m
Range: 400km
Endurance: 2.66 hours
SPAD 7 / 180 hp Hispano Suiza 8 Ab
Span: 7.822m
Length: 6.080m
Height: 2.200m
Wing Area: 17.85 sq.m
Empty weight: 500kg
Loaded weight: 705kg
Maximum Speed:
2000m: 212 km/h
3000m: 204 km/h
4000m: 200 km/h
5000m: 187 km/h
Climb:
2000m: 4 min 40 sec
3000m: 8 min 10 sec
4000m: 12 min 49 sec
Ceiling: 6553m
Endurance: 1.5 hours
Winsock Datafile gives only the 180 option:
2000m - 212kph (132mph);
3000m - 204kph (127mph);
climb to 3km - 8m10s.
I've seen these elsewhere - quoted from Flight magazine.
SPAD 7 / 150 hp Hispano Suiza 8
Aa:
6500 ft: 119.5 mph (191kph)
9800 ft: 111.5 mph (178kph)
13100 ft: 108 mph (174kph)
SPAD 7 / 180 hp Hispano Suiza 8 Ab:
6500 ft: 132 mph (212kph)
9800 ft: 126 mph (202kph)
13100 ft: 124.5 mph (199kph)
16400 ft: 116 mph (186kph)
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