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Motorcycles

Yamaha developing CVT enduro bike

Yamaha is developing a CVT (Constantly Variable Transmission) enduro machine according to recent patent applications. Conceived by Leonardo da Vinci 500 years ago, the CVT power delivery characteristics could well be a boon in slippery off-road conditions, particularly with some help from a computer. The CVT's biggest advantage is ensuring the motor is always running “in the power band” and as the infinitely variable gear ratios change, it should deliver one smooth rush of power from standstill to top speed. Read More

Motorcycles

Christini’s All-Wheel-Drive dirt bikes find huge traction without power loss

Four Wheel drive cars have taken over at the top-level of off-road rally racing, but dirt bike racing is still predominantly fought out on single-wheel-drive vehicles that spin up, fishtail and slide wildly across rough terrain. Make no mistake though, the All Wheel Drive (AWD) revolution is coming to the motorcycle world – Yamaha and KTM have done significant work with hydraulic front-wheel-drive systems, and when new ideas like this successful all-mechanical AWD kit from Christini hit the mainstream, dirt bike riding will never be the same again.Read More

Urban Transport

Yamaha's radical adjustable electric motorcycle

October 28, 2005 UPDATED IMAGES For the last 125 years, motorcycles have been made up of two wheels and a motor, and they have all been arranged as a wheel, a motor and another wheel – in that order – all of them. But the freedom afforded to designers by the in-wheel electric motors which technology has recently spawned will make for some interesting changes over the coming years and Yamaha is the first of the motorcycle manufacturers to seriously look at alternatives available in the next generation of motorcycles. The Deinonychus prototype takes full advantage of the greater chassis design freedom afforded by an in-wheel motor, and offers a completely new type of two-wheel-drive (2WD) EV (electric vehicle) with "Stretch & Shrink" functions in the vertical and horizontal directions. Yamaha’s exhibition at the Tokyo Motor Show features a number of futuristic commuter vehicles other than the Deinonychus including a fuel cell prototype, a hybrid prototype and a production electric scooter. For the record, a Deinonychus is a lightly built, fast-moving, agile, bipedal, killer dinosaur. This article includes a full rundown of Yamaha's other electric, methanol and hybrid scooters shown at TokyoRead More

Motorcycles

KTM shows a new all-wheel-drive motorcycle under development

The all-wheel drive motorcycle seems certain to become more widespread over coming years as yet another major motorcycle manufacturer has disclosed its activities in the area. Austrian motorcycle powerhouse KTM is working in conjunction with Swedish Company Ohlins in the development of a mechanical/hydraulic system for driving the front wheel. A 2WD equipped KTM 525 EXC has been race tested in Europe recently by KTM Sport Director and former Factory Rider Kurt Nicoll. Austrian motorcycle powerhouse KTM has been around longer than Honda, Yamaha and Ducati, but only really became a recognised international marque in the last 25 years, thanks to its fast and reliable off-road motorcycles. Read More

Motorcycles

Yamaha two-wheel drive motorcycle

Sunday November 16, 2003 In one of the most significant moves in motorcycle history, Yamaha has announced that it will release a two-wheel drive motorcycle early in 2004.Though it is not the first two-wheel drive motorcycle in history, the new machine will be a landmark model as it seems certain to be the first of many - testing over the last five years has indicated enormous benefits in terms of safety, traction and (probably the one that counts most) outright cornering speed in slippery, sandy or muddy conditions.Read More

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