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NSU

NSU Sportmax

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The NSU Sportmax is a racing motorcycle for private riders that was developed from the standard machine. It successfully raced alongside the factory Racemax machines from as far back as 1953. The whale cladding with ears was replicated many times by private persons, a practice that was tolerated by NSU provided it was not painted blue. In 1955, H.P. Müller riding the Sportmax became the world's first private rider to become world champion in the 250 cc class.

NSU Sportmax

These machines were based on the standard production "250s", the "Max" and "Super Max", and in the years following the factory's sale of real racers there were a good many private-owner conversions of the roadsters into pseudo-racers. They didn't go as quick!

NSU Sportmax

NSU Sportmax specifications

Make Model: NSU Sportmax
Year: 1954-56
Engine: Single cylinder, 4 stroke, OHC
Capacity: 247 cc / 15 cub in
Bore x Stroke: 69 x 66 mm
Cooling: Air/Oil cooled
Lubrication: Dry sump
Clutch: Multi-plate
Starting: Kick start
Ignition: Coil
Carburetor: BING 2/26/25
Exhaust System: Twin, steel
Max Power: 20.6 kW / 28 hp @ 10 00 rpm
Compression Ratio: 7.4:1
Transmission: Four speed block
Final Drive: Chain
Frame: Single-bar stamped plate with engine protection and suspended
Front suspension: Swining link suspension
Rear suspension: Telescopic suspension
Brakes (front and back): Drum
Wet Weight: 155 kg / 342 lbs
Top Speed: 212 km/h / 131.7+ mph

NSU Sportmax

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