Yamaha introduces ride-by-wire motorcycle
By Mike Hanlon
22:00 September 30, 2005 PDT

Yamaha introduces ride-by-wire motorcycle
Image Gallery (12 images)8) Other stuff Also adopted on this model are: (1) forced air intake; (2) a semi-hydraulic cam chain tensioner; (3) a two-side-intake oil pump and water pump driven off the same shaft; (4) a one-way, single unit compact AC magneto; (5) a close-ratio 6-speed transmission; (6) magnesium head cover and case cover and (7) a 3-way catalytic converter equipped with an oxygen sensor. Chassis
1) New Deltabox frameA newly designed Deltabox aluminum frame has been adopted. Engine placement has been optimized thanks to the know-how gained from the MotoGP machine YZR-M1, optimization of the vertical, horizontal and torsional rigidity balance of the frame, including the rear arm, provides linear, sporty handling performance.
Like the frame of the YZF-R1, this new frame is a hybrid type composed of a combination of metal-mold cast parts and pressed parts, and as with the 2005 YZR-M1, the air induction passage is designed in a straight configuration that goes through the head pipe. Also, an efficient design makes use of the inside of the frame as air cleaner space. The fuel tank rail has been designed to lie as close as possible to the machine's roll axis to optimize torsional balance characteristics.
2) Rear arm with truss + box construction Like the frame, the rear arm is also a hybrid type composed of a combination of metal-mold cast parts and pressed parts, which slightly improve vertical rigidity and achieve a weight reduction of about 1 kg. Also, raising the pivot axis by 20 mm has improved the anti-squat effect. This brings out excellent running performance to reduce changes in movement when turning.
3) Front wheel weight distribution set up at 52.5% The new frame design, revised dimensions, adoption of a midship muffler and the slimmer tail assembly have increased the front wheel weight distribution by 1% compared to the existing model, bringing it almost to the level of a MotoGP machine at 52.5%. This provides a greater feeling of road hold for the front wheel and brings out outstanding cornering performance.
4) front and rear suspensions In order to provide greater freedom in settings, the following have been adopted: (1) initial load adjustment; (2) 2-way compression stroke damping adjustment; and (3) an upside-down front fork with 41mm inner tubes and a compression/rebound stroke damping adjustment function. The newly adopted 2-way compression stroke damping function is a feature that can be adjusted for both high- and low-speed to achieve settings for both the circuit and ordinary roads.
A new type of rear suspension has been adopted to provide the best match with the new frame. The link system for the rear suspension has been changed to a bottom-linked type and the link character has been optimized. Design efforts have been made to contribute to better concentration of mass. As with the front, a 2-way compression stroke damping adjustment mechanism has been equipped on the rear suspension. The damping can be adjusted separately for both high- and low-speed stroke to enable greater choice to accommodate different conditions and uses.
5) Other chassis stuff Also adopted on this model are: (1) lightweight aluminum rotor brackets and new front-brake pads; (2) an inner duct for the undercowl; (3) an aluminum rear mudguard stay; (4) a CF aluminum die-cast rear frame; (5) a TZ type aluminum chain puller that makes tire changes easier during races; (6) a forged aluminum side stand and (7) a lap time monitor.
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Freedom Glen
- November 25, 2009 @ 02:47 UTC