NSU Fox 4-stroke (Type 101
OSB)
Production: 1949-1954
Units built: 1949:6636, 1950:19199, 1951:14000, 1952:6059,
1953:6712, 1954:6520
Engine: 1 cylinder 4-stroke
HP: 6 at 6500 rpm (1952+: 5.2 HP)
Engine displacement: 98 cc
Cylinder diameter: 50 mm
Piston stroke: 50 mm
Compression ratio: 7.2:1, max. 7.8:1
Valvetrain: OHV
Carburetor: BING 1/14/6
Transmission: up to 1950: 3-speed, then 4-speed
Frame: solid NSU sheetmetal frame
Brakes: 125 mm drum brakes
Tire size: 2.50-19"
Weight: 80 kg
Maximum weight: 230 kg
Length: 1910 mm
Gas tank volume: 8.2 ltr
Fuel consumption: 1.8 ltr/100 km
Top speed: 85 km/h
General information: Crankshaft main bearings only on one side
of the crankshaft. Pump-less oil system. First post-WW2 design by Albert
Roder; later he designed the reliable hi-tech ULTRAMAX valvetrain of the
Max, Superfox, Maxi and NSU Prinz (2-cyl. car)
Original article by Hartmut
Schouwer
