Web Analytics

 Norton - 828 JPN replica
 Back to brands list

Norton JPN replica motocyclette motorrad motorcycle vintage classic classique scooter roller moto scooter
Photo ou archives :

Capacity : 828
Model : JPN replica
Production : 1975 - 1975
Category : (R) Street Bike


850 john Player Norton Replica· 1975

Road bike, track style

Rider/tuner Peter Williams joined Norton in 1969 and began developing a 750cc production racer using a power unit developed from the Commando twin. It first appeared in the 1972 Tourist Trophy, but was eliminated because of gearbox failure. For 1973, an entirely new machine with a monocoque frame/ tank was developed, which gave Williams a well-deserved TT win.

From Reality to Replica

Flushed with its racing success, Norton launched an exclusive run of 750 Production Racers, replicas of the works john Player Norton team bikes, to be sold to private entrants. The next move was far more commercial; late in 1974, Norton unveiled a production John Player replica intended to add sparkle to an aging model line-up.

Aerodynamic Style

The dolphin fairing, whose style was as stunning as it was aerodynamic (its drag coefficient was just 0.39), was a faithful copy of the racer. It incorporated, as on the 1973 Bol d'Or machine, dual headlamps in the blisters that shrouded the drop handlebars. The effect was magnificent. That year, Norton abandoned the racing 750, which developed 80 hp at 8000 rpm, in favor of a 60 hp, 828cc, bored-out version of its standard engine. It

was this unit that was fitted in the ]PN replica. There were further compromises: the replica had neither the light-alloy rims nor the rear disc brake of the racing machine. But did it really matter? The JPN replica was reasonably priced and a delight to ride.


Engine: 828cc (77x89mm) air-cooled twincylinder four-stroke; "Isolastic" engine mounting

Power Rating: 61 hp @ 5900 rpm

Valves: overhead-camshafts

Fuel System: two Amal carburetors

Transmission: 4-speed, chain final drive

Suspension: relescopic forks (front); swing arm (rear)

Brakes: disc (front); drum (rear)

Wheels: 4.10x19 inch (front & rear)

Weight: 437 lb

Maximum Speed: 121 mph

Seen here at the famed Montlhery banked circuit south of Paris, the Norton John Player Replica is today a valued collector's piece.

Le fichier Moto Passion réalisé par François-Marie Dumas réunit près de deux mille photos accompagnées d'un historique très complet des machines présentées.
Il sera progressivement mis à jour ici et toute information complémentaire est la bienvenue sur info@moto-collection.org.

Cette documentation unique, qui constitue sans doute l'encyclopédie la plus exhaustive jamais écrite sur l'histoire de la moto, a été réalisée avec l'assistance de nombreux spécialistes dont principalement Didier Ganneau, Christophe Gaime, Mick Woollett, Jean Goyard, Bernard Salvat, Christian Rey, Yves Campion, Helmut Krackowizer, Michael Dregni, Michel Montange, etc. que je remercie ici.

Disponible sur demande :
- Les fiches originales sur papier
- Les photos et archives signées de mon nom en haute définition ou les documents originaux.
Me contacter sur info@moto-collection.org pour les conditions et droits d'utilisation.