October 24, 2005 One of the surprises of the 39th Tokyo Motor Show 2005 which opened on saturday was Honda's showing of a large-size sports motorcycle concept model dubbed the DN-01. The motorcycle is equipped with a continuously variable automatic transmission (CVT) and a water-cooled, 4-stroke, OHC, V-twin, 2-cylinder, 680cc engine. Most significantly, Honda stated that it "will continue the development of DN-01 with the goal of introducing it to the market in the near future."
CVT has already been introduced into the market in a range of scooters with Suzuki's futuristic Burgman scooter the most obvious shining example. Honda's version of the CVt is being touted as different to other CVTs and is described as an hydraulic mechanical continuously variable HFT (Human Fitting Transmission) system featuring two automatic modes and a 6-speed manual mode which the rider operates through buttons on the handlebars.
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Moreover, this is the first hydraulic mechanical continuously variable transmission system in the world to be equipped with a lock-up mechanism, which improves the fuel efficiency while offering a smooth ride without feeling the shock normally associated with gear shifts, even when cornering. With the HFT, the DN-01 achieves more easy-to-operate and comfortable riding than currently available sports model motorcycles.View gallery - 26 images