YAMAHA YZF-R1
Posted on 4:39 AM by Niranjan
The well acclaimed new generation motorcycle from Yamaha, YZF-R1 is equipped with an all-new 988cc inline four-cylinder engine with a crossplane crankshaft that runs with an uneven firing interval of 270º - 180º - 90º - 180º. This innovative new design ensures superb throttle linearity to give an amazing experience to the rider. The new engine feels and sounds smoother than previous models and emits an unforgettable growl from the exhaust. This MotoGP-inspired engine is no doubt the most technologically advanced power house ever seen on a Yamaha supersport bike. The all-new Deltabox chassis ensures a balance with ultimate feel and controllability. Now it has got a refurbished look with all the avant-garde welcome features to attract the bike enthusiasts.
ENGINE
Yamaha R1's engine now has the shortest stroke of any 1000cc which would normally give a peaky power delivery though the new crank and firing order fill in the low and mid-range grunt. Peak power remains the same as before, but torque is up by 2ftlb. Now it stands at 179bhp@12,500rpm and the maximum torque of 85ftlb@10,000rpm. The motor has forged the same aluminium pistons, fracture-split conrods, ceramic composite plated cylinders, titanium inlet valves and exhaust and a slipper clutch. The piggy back generator has been moved down to the end of crank to make room for the new, lower fuel tank. The fuel injection system, featuring electronically controlled variable length inlet trumpets, now has shower injectors in upper airbox like the Yamaha R6. The fly-by-wire throttle system is modified to give better control of air intake volume.
DESIGN AND COMFORT
The overall look of the Yamaha R1 has changed with new designs. The stark difference between last year's model and the 2009 is that the latest version looks with much more compact and agile. The center up exhaust on the 2009 model seems significantly larger compared to the previous year's. The front has the same classic R1 shape, though the air intake location and headlamp design have been revamped on the new model utilizing only projector lamps and using the newly designed space within the nose cone. Taking cues from its younger sibling the R6, the R-1 now has a cast magnesium subframe that is ultra light and reduces weight at the outer edges of the motorcycle to centralize mass. The inside rails are extruded and the entire chassis rigidity has been revised for optimum handling.
RIDE AND HANDLING
Compared to the previous Yamaha R1, the '09 model is sharper in steering retaining the earlier Yamaha neutral feel. The engine is mounted 9° steeper and 8.2mm further forward than before, putting more weight on the front end. Weight distribution is now 52.4%, 47.6% front to rear. The riding position is more compact. The wheelbase is down by 5mm to 1415mm. The R6-type magnesium sub frame, shorter titanium end cans and lower short fuel tank help improve mass-centralisation. Footrests are now two-way adjustable with 155mm up and 3mm back. The 43mm upside down forks now have independent damping, compression in left and rebound in right leg. Yamaha says this improves the damping response. As the forks are connected by the yokes and wheel spindle, it's all one unit balancing out properly. The rear shock has a new bottom link set-up and a new hydraulic preload adjuster. The steering damper is now speed sensitive and controlled electronically. The '09 Yamaha R1 carries the same six-piston caliper and 310mm disc set-up as the previous model. Discs are slightly lighter than before. The master cylinder lever ratio is improved and lightened by 25g and the lever shape itself is new. The rear tyre profile is improved for better side grip. Another advancement included on the 09 model is D-Mode Throttle Control Valve Mapping which allows a rider to choose between 3 distinct maps depending on the rider's environment such heavy traffic, highway and wet conditions.
PRICE--Rs 12,14,491
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