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 KTM - 1000 Proto bi-moteur de Hill climbing
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KTM Proto bi-moteur de Hill climbing motocyclette motorrad motorcycle vintage classic classique scooter roller moto scooter
Photo ou archives : Ch. Vignes

Capacity : 1000
Model : Proto bi-moteur de Hill climbing
Production : 1991 -
Category : (Off-Road) MX


1000cc Twin-engine / Hillclimber - 1991

The only way is up

Many disciplines that are rough, tough and spectacular are simple to define. Hillclimbing was developed in the US. It's easy enough in theory: You just have to get to the top of a dramatically steep slope. In practice, it's more difficult!

No Substitute for Inches

This is a truly one-of-a-kind sport, evidenced by the astounding motorcycles (if you can call these two-wheeled monsters that) developed specifically to climb reputedly impossible slopes. When faced with a climb of 1500 feet, up the steepest slopes, there's no substitute for inches. Anything goes, from super-tuned Harley V-twins running on nitromethane, to supercharged Japanese fours producing 200 hp; even two engines coupled together – as on the KTM shown, powered by two motocross 500s – are not uncommon.

Astounding Frame Design

The chassis design too is amazing. To stop the bikes from rearing over backwards, they use a very long wheelbase, augmented by tremendously long swing arms. To maintain grip, tires are fitted with studs, bolts, chains or metal spikes. Some machines even successfully use tandem rear wheels. These "vertical dragsters" display an astounding mechanical creativity on the part of their constructors, powerfully motivated by the big prizes offered to those who climb highest or even reach the top of the hill!


Engine: 2x500cc air-cooled single-cylinders mounted in tandem

Power Rating: around 140 hp

Valves: two-stroke

Fuel System: carburetor

Transmission: gearbox locked in 3-speed; chain final drive

Suspension: reversed telescopic forks (front); swing arm with 12 inch extension and monodamper (rear)

Brakes: disc (front & rear)

Wheels: 18 inch (front & rear); rear wheel fitted with 4 inch studs

Weight: 309 lb

Hill climbing is a popular and dramatic spectator sport, with America's most spectacular climb rejoicing in the uncomfortable name of "Widowmaker!"

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.