Sports Cycle

2011 Yamaha R1

But, Yamaha plans to use a different approach when compared to what Honda did with the twin-clutch tranny of the VFR 1200F. Unlike Honda’s approach, in which one input shaft passes through the other, Yamaha plans to use two input shafts which are half the length of a normal gearbox’s single shaft. Also, the two clutches in the Yamaha twin-clutch tranny will be positioned at either sides of the transmission, to offer better weight distribution.
The technique though that Yamaha plans to use will be different from the one that Honda has employed. Unlike Honda, where one input shaft passes through the other, Yamaha plans to use two input shafts that are half the length of a normal gearbox’s single shaft. Also, the two clutches will be placed on either side of the vehicle for perfect weight distribution.
As per Yamaha, the new twin clutch gearbox are enough compact to provide smooth transition during gear changes, and at the same time not affect the balance of the bike after mounting the gearbox.

2011 Yamaha R1 w/Twin Clutch Box Revealed.

The aluminum Deltabox frame is also all new, using a combination of gravity cast, die cast and stamped components for the lightest possible weight. The engine is also a stressed member. Yamaha claims and ideal mix of rigidity, flex and low weight.
Engine type...998cc, liquid-cooled 4-cylinder DOHC 16 valves (titanium intake valves)
Bore x stroke...78.0mm X 52.2mm
Compression ratio...12.7:1
Fuel delivery...Fuel Injection with YCC-T and YCC-I
Ignition...TCI: Transistor Controlled Ignition
Transmission...6-speed w/multi-plate slipper clutch
Final drive...#530 O-ring chain
Front suspension...43mm inverted fork; fully adjustable, 4.7-in travel
Rear suspension...Single shock w/piggyback reservoir; 4-way adjustable, 4.7-in travel
Front brakes...Dual 310mm disc; radial-mount forged 6-piston calipers
Rake...24.0°
Trail...4.0 in
Fuel capacity...4.8 gal
Estimated fuel economy...33 mpg
Wet weight...454 lb
Front tire...120/70ZR17
Rear tire...190/55ZR17
L x W x H...81.5 x 28.1 x 44.5 in
Seat height...32.8 in
Wheelbase...55.7 in
2011 Yamaha R1 w/Twin Clutch Box Revealed.