NSU Supermax 1957


NSU Supermax (Type 251 OSB)

The Supermax was derived from the Max and Spezialmax but differed in many areas, the most obvious being the rear suspension. Highly regarded both in Germany and abroad, it was a high performance machine with excellent reliability.

Manufacturing Dates: Late 1956-1963

    1956: 4440
    1957: 2563
    1958: 2357
    1959: 1403
    1960: 2619
    1961: 1240
    1962: 473
    1963: 378


Engine: single-cylinder four-stroke, dry sump with external oil tank and paper oil filter
Power: 18hp at 6900 rpm
Displacement: 247 cc
Bore x stroke: 69 mm x 66 mm
Compression ratio: 7.4:1
Spark plugs: W 240 T11, gap: 0.7 mm
Valvetrain: OHC, camshaft driven by Ultramax rods, hairpin-style valve springs
Carburetor: BING 2/26/55
Transmission: 4 speed
Frame: pressed metal

Brakes: drum front and rear
Tyres size: 3.25 x 19in front and rear
Unladen Weight: 174 kg
Maximum weight: 315 kg
Length: 2051 mm
Fuel tank capacity: 14 ltr
Oil tank capacity: 2 ltr
Fuel consumption: 3.2 ltr/100 km
Top speed: 126 km/h
Suspension: Leading link front forks and swinging arm rear suspension with dual shock absorbers (earlier models had a mono arrangement.

Moto Talbott Collection

East of Monterey and not far from Laguna Seca Raceway, Moto Talbott began with the gift of a coffee-table book about the Guggenheim Museum's "Art of the Motorcycle" collection which toured the world in the late 90s. For the following two decades or so Robb assembled a remarkable collection of machines, many reflecting his personal experiences in the field as a young man. In recent years the idea came to him to present his passion to fellow enthusiasts, and with the help of his good friend and collaborator Bob Weindorf the museum was born. More...