Showing posts with label ninja. Show all posts
Showing posts with label ninja. Show all posts

Tuesday, 4 September 2012

Honda CBR250R



The Honda CBR250R is a single cylinder sport bike made by Honda in Thailand and India since 2011. It was primarily intended for the Thai and Indian markets, but is sold worldwide, including in developed countries in Europe, North America and elsewhere. In developing countries where typical motorcycles are 125–150 cc (7.6–9.2 cu in) displacement, the larger 249.5 cc (15.23 cu in) CBR250R is at the higher end of the sport bike range, looking similar to much more powerful sporting machines with its full fairing in Honda's new layered style that was introduced on the 2008 CBR1000RR Fireblade and 2010 VFR1200F. In wealthier industrialized countries, the CBR250R enters at the opposite end of the market, as a budget priced beginner or utility bike, practical and fuel efficient, but with limited sporting pretensions.


In the US, the new CBR250R is the first major competition the Kawasaki Ninja 250R has faced since the early 1990s. The CBR250R has optional mechanical combined anti-lock brakes, which is unusual at its price. It also competes with the Yamaha R15, the Bajaj Pulsar 200NS, to some extent the Royal Enfield Classic and the Austrain KTM Duke 200.


Design

The CBR250R closely follows the style of the VFR1200F, notable for its Y-shaped headlight and prominent middle cowl, which creates a layered look. This new direction in Honda design debuted at Intermot in 2008 with the V4 Concept Model, and the 2008 CBR1000RR Fireblade.


The V4 Concept Model at Intermot 2008
Motorcycle Consumer News design columnist Glynn Kerr observed that new direction in bike design fits the pattern of motorcycle trends imitating, but lagging behind, car styling, in that motorcycles are shifting away from sharp, "lithe", dart-like shapes of the 2010s toward a heavier, "chunky" style with a higher, blunter nose, and, in cars, a "high waisted" middle with short windows and thicker pillars. Kerr cites the Chrysler 300 as the best example, as well as smaller cars like the Audi A3 and Suzuki Swift, commenting that, "aggression now comes from appearing strong and assertive, rather than light and dart-like... the arrow has been replaced by the hammer."

In motorcycles this translates into a heavy front, reverse rake angle headlight, and the use of little or no color on the rear half of the bike to spotlight the front one-fourth of the bike. In this aspect, Kerr also sees influence from the 1994 Morbidelli V8, the 1991 Yamaha TDM850, and Honda's DN-01 of 2005. On the 2008 CBR1000RR, Kerr thought the dominant vertical line produced an awkward, top heavy look that played against traditional race replica styling of body lines sloping downwards towards the front. The 2010 VFR1200F was visually more successful because the new style better suited the greater proportions of a touring motorcycle, and in spite of Honda's third iteration of the style being a much smaller bike, nonetheless Kerr said, "the latest CBR250R carries the look even better than its big brother." The Ottawa Citizen's review by David Booth said the CBR250R looked better than the VFR1200F as well, commenting that, "Where the various bulges of the big VFR are a little too Jessica Rabbit-like over-the-top, the little CBR250R styling is far more subtle and really looks the classier of the two."

Critical reception

Reviews of the CBR250R generally rate its performance in comparison to its main competitor, which in the US and Canada is the Kawasaki Ninja 250R. The Hyosung GT250, rebadged as the ATK GT250 for 2011, is also a potential competitor in those markets, although it fares poorly in comparison. In India, the Ninja 250R and Hero Honda Karizma R are the leading competition. Though lower in peak power and with a slower top speed than the Ninja 250, the CBR was lauded for having more torque available at lower engine speeds, meaning that it was easier to accelerate from low speed and pulling away required less noise and drama, since the Ninja had to be revved to 9,000 rpm and above to make use of its greater power. This made the CBR250R more pleasant and forgiving to ride than the sportier, but more challenging, Ninja. Complaints from The Economic Times of Mumbai included a tendency to stand up if the rider makes a sloppy mid-corner correction, and brakes and suspension not up to the standards of a track bike. The Indian reviewer also perceived the 161 kg (350 lb) wet weight as "not so light", while American journalists considered it a featherweight, "incredibly agile, flickable ... almost too light," at 16.5 lb (7.5 kg) lighter than the Ninja 250R.The Ninja 250R's brakes had a better, more linear feel with stronger initial bite and could stop from 60 to 0 mph (97 to 0 km/h) in 121.5 ft (37.0 m), while the CBR250R, with a stopping distance of 123.4 ft (37.6 m), was lauded for its combined anti-lock brake option, a boon to beginners in spite of the slightly shorter braking distance achievable on the Ninja 250R by a skilled sport rider. Kevin Ash, at 6 ft 3 in (1.91 m), found the dimensions comfortable for someone of his height, while David Booth cautioned it could be cramped for taller riders.



In one head to head comparison, MotorcycleUSA judged the Ninja 250R to be the better bike due to its superior speed and handling. The testers at Motorcycle Consumer News found the CBR250R to be the better choice, given the needs of its presumed prospective buyers in the US, beginners and those looking for a practical motorcycle for long commutes, though "if sheer performance is all you're after" without regard for fuel efficiency, then the Ninja 250R might be preferable.


Wednesday, 13 June 2012

BMW S1000RR



From the makers of the popular GS, comes this street legal WSBK racer. Sharp, the most powerful in its class when launched, and more agile than a mongoose. This bike has backed tens of awards and favorable reviews from reviewers who just loved it, the world over.

When launched, it ruled the horsepower charts, being as powerful as a Suzuki Hayabusa but weighing almost 50 kg less. The power-to-weight ratio was just phenomenal, what with a power output of 179.2hp at the rear wheel and with a wet weight of 207.7 kg (Dry weight- 183kg). It's engine size is less than 1/4th the size of probably one of the best sports cars out there- the latest Lambo Gallardo, the Ferrari 458 Italia and the McLaren MP4-12C, but due to its far superior power-to-weight ratio, it smokes 'em all, almost in an unfair sought of way.




The BMW S1000RR is a sport bike initially made by BMW Motorrad to compete in the 2009 Superbike World Championship, that is now in commercial production. It was introduced in Munich in April 2008, and is powered by a 999 cc (61.0 cu in) inline-4 engine redlined at 14,200 rpm.
BMW made 1,000 S1000RRs in 2009 to satisfy World Superbike homologation requirements, but expanded production for commercial sale of the bike in 2010. It has an anti-lock braking system, standard, with an optional electronic traction control. It has a wet weight of 207.7 kg (458 lb), and produces 133.6 kW (179.2 hp) @ 13,250 rpm at the rear wheel. It competes with Suzuki GSXR1000, Ducati Panigale, Kawasaki Ninja, Yamaha R1, Honda Fireblade, Aprillia RSV4, etc.

Race bike differences


The factory race bike used in the Superbike World Championship differs in a number of ways from the production bike. Its engine has a higher compression ratio of 14.0:1 compared with 13.0:1, and it delivers over 200 hp (150 kW) at 14,000 rpm, compared with 193 hp (144 kW) at 13,000 rpm. The race bike has a 44 mm Öhlins inverted fork, compared with a 46 mm upside-down fork. It has 16.5-inch front wheel and 16-inch rear wheel instead of 17-inch and an MRA Racing 'Double-Bubble' Windshield. Most significantly, it has a wet weight of 162 kg (360 lb) compared with 207.7 kg (458 lb) for the production model.

Superbike World Championship


On 26 June 2008, Spanish rider Rubén Xaus signed to ride the bike for the factory BMW Motorrad team. On 25 September 2008, Australian former double Superbike World Champion Troy Corser signed to complete the team's two-rider lineup for 2009. In the 2009 Superbike World Championship season, the highest race result achieved by Corser was fifth place in the Czech Republic, and Xaus achieved seventh place in Italy. During the 2010 FIM Superstock 1000 Championship season Ayrton Badovini dominated by winning every single race but one on the S1000RR. This result was significant because the Superstock class of WSBK is where the machines most closely resemble the stock offerings at the showroom. On 13 May 2012, Italian rider Marco Melandri riding for the factory BMW Motorrad team was the first to secure a win for the S1000RR in World Superbike competition at the British round in Donington Park. His team mate Leon Haslam came in second giving BMW a "One Two" finish.

MotoGP CRT Class

On 8 April 2012, US rider Colin Edwards rode a BMW S1000RR engined motorcycle for the Forward Racing team. This history making inaugural CRT Class debut, where 1000cc tuned factory production motorcycle engines competed for the first time alongside the current MotoGP machines. The BMW S1000RR engined Suter machine though placed first in its class finished 12th overall.

Marketing

In March 2010, BMW released a video on YouTube titled "The oldest trick in the world", which highlighted the S1000RR's acceleration by pulling a tablecloth off a long 20-seat dining table without disturbing the place settings and table decorations. Its popularity turned the ad viral, with 1.4 million views in the first ten days, and more than 3.7 million views as of October 2010. The October 27, 2010 MythBusters episode "Tablecloth Chaos" tested whether the trick could be reproduced. The stunt was replicated in detail, with the exception that a different motorcycle was used—an Erik Buell Racing 1125R, owned and ridden by the shows co-presenter Jamie Hyneman. The conclusion was that the video was fake as the only way it could be reproduced was by placing a plastic sheet on top of the tablecloth—thus eliminating any contact between the tablecloth and the table settings.

Recall

BMW issued a recall for bikes built between Sept. 1, 2011, through April 10, 2012 to address an issue with bolts that secure the connecting rods to the crankshaft that could loosen when the bike is driven at high speed.

Performance


  • Top speed: 305 km/h (190 mph)
  • 1/4 mile: 9.57 sec @ 251 km/h (156 mph) 
  • 0–100 km/h: 3.1 sec / 43 m (141 ft)
  • 0–200 km/h: 6.9 sec / 209 m (686 ft)
  • 0–250 km/h: 10.4 sec / 426 m (1,398 ft)
  • 0–280 km/h: 14.8 sec / 750 m (2,460 ft) 
  • 0-300 km/h: 19.1 sec / 1,112 m (3,648 ft) 
  • Braking distance 250-0 km/h: 229 m (751 ft) 
It competes with established super bikes such as Suzuki GSXR1000, Ducati Panigale, Kawasaki Ninja, Yamaha R1, Honda Fireblade, Aprillia RSV4, etc.

Wallpapers-
























Saturday, 12 May 2012

Kawasaki Ninja ZX-10R



Describing the Kawasaki Ninja ZX-10R as totally manic might just be the best way to do it. At the twist of the throttle, it produces massive bouts of spontaneous power, the bike monstrously accelerating to large distances and big numbers in ridiculously short distances and time. And that mean green appearance just lends it that extra aura to its personality. Launched in 2004, scaring amateur riders ever since. It's main grudge is with the Honda Fireblade CBR1000RRSuzuki's Gixxer 1000, MV Agusta F4Suzuki Hayabusa, BMW S1000RR and the Yamaha R1. Kawasaki has also allowed its racing genes to trickle down into the smaller 250R.


Engine


Kawasaki engineers utilized a "stack" design for a liquid-cooled, 998 cc inline four-cylinder engine. The crank axis, input shaft and output shaft of the "Ninja" ZX-10R engine are positioned in a triangular layout to reduce engine length, while the high-speed generator is placed behind the cylinder bank to reduce engine width. With a bore and stroke of 76 × 55 mm (3.0 × 2.2 in), the ZX-10R engine's one-piece cylinder and crankcase assembly reduces weight and increases rigidity. The DOHC are machined from chromoly steel built for strength, four valves per cylinder improve high-rpm breathing, and the forged, lightweight pistons offer high heat resistance to further enhance the bike's power-to-weight ratio.

Cooling system

In addition to liquid cooling, the ZX-10R engine features an oil cooler adjacent to the oil filter to reduce oil temperatures. "Slosh" analysis was also used to design the internal structure of the oil pan, thereby reducing windage losses and helping to maintain low oil temperatures.




Clutch

A multi-plate wet slipper clutch transfers power to a six-speed, close-ratio transmission ideal for closed-course competition. The back-torque limiter automatically disengages the clutch (partially) under hard downshifting at high engine speeds to prevent rear wheel hop during corner entry.

Wheels

A new six spoke wheel design is claimed to be almost as light as special purpose race wheels. Since the 2006 model the sidewall profile of the rear tire has been increased from 190/50/ZR17 to 190/55/ZR17.

2004 model

This was the debut of the Ninja ZX-10R. It was compact, with a short wheelbase and a high power-to-weight ratio, which helped the handling. The exhaust system was fully titanium with single muffler.

2006 model

Among other changes, the 2006 model featured twin underseat exhausts which contributed to a 5 kg (11 lb) increase in dry weight. The engine remained largely unchanged.
The 2006 ZX1000D6F model carried over to the 2007 model year, with only color scheme changes. The most noticeable difference between 2006 and 2007, is that the heat-shields on the exhaust pipes are black on the 2007 ZX10R, and 2006 came with silver ones.

2008 model



The 2007 ZX-10R
The ZX-10R was all new for its launch for the 2008 model year. There was a dramatic change in appearance with the bike featuring a much more angular front end. Kawasaki moved away from the twin-underseat exhausts of the 2006–2007 model to a more conventional single side exhaust. The compression ratio of the engine was raised.

2009 model

Received only slight changes from the 2008 model.

2010 model

Received slight changes from the 2009 model, including: upgraded Öhlins steering damper, upgraded transmission, and revised bodywork.


2011 model





The 2011 ZX-10R underwent major overhaul both mechanically and visually. Most notably, Kawasaki introduced their S-KTRC (Sport Kawasaki Traction Control) system as a standard feature; responsible for predicting when traction will be lost and adapting accordingly. Also new are KIBS (Kawasaki Intelligent Braking System) as their optional ABS system, a completely new design, adjustable foot-pegs, larger throttle bodies, a horizontal rear suspension, lighter three-spoke wheels, Showa Big Piston Fork (BPF) front suspension, and an LCD panel dashboard.

Specifications

All specifications are manufacturer claimed.




2004/20052006/20072008/2009/20102011
Engine
Engine Type998 cc (60.9 cu in) liquid-cooled inline four-cylinder
Bore/Stroke76.0 × 55.0 mm (2.99 × 2.17 in)
Compression Ratio12.7:112.9:113.0:1
Valve TrainDOHC; four valves per cylinder
Fuel DeliveryFuel Injection
IgnitionComputer-controlled digital transistorizedTCBI with digital advance and Sport-Kawasaki Traction Control (S-KTRC)
Drivetrain
Transmissionclose-ratio six-speed, slipper clutch
Final Drivesealed chain
Chassis/Suspension/Brakes
Front Suspension43 mm inverted fork with top-out springs
Rear SuspensionBottom-Link Uni-Trak with gas-charged shock and top-out springUni-Trak with top-out spring, stepless, dual-range (high/low-speed) compression damping.Horizontal Back-link with gas-charged shock, stepless, dual-range compression damping, stepless rebound damping
Front BrakesDual radial-mounted four-piston calipers with semi-floating 300 mm (11.8 in) petal discsDual radial-mounted four-piston calipers with semi-floating 310 mm (12.2 in) petal discs
Rear BrakesSingle 220 mm (8.7 in) disc with single-piston caliper
Front Tire120/70ZR-17
Rear Tire190/50ZR-17190/55ZR-17
Dimensions
Rake24 degrees24.5 degrees25.5 degrees25 degrees
Trail102 mm (4.0 in)109 mm (4.3 in)106 mm (4.2 in)
Wheelbase1,385 mm (54.5 in)1,390 mm (55 in)1,415 mm (55.7 in)1,425 mm (56.1 in)
Seat Height825 mm (32.5 in)830 mm (33 in)813 mm (32.0 in)
Dry Weight170 kg (375 lb)175 kg (386 lb)179 kg (395 lb)
Wet Weight197 kg (434 lb)
Fuel Capacity17 L (3.7 imp gal; 4.5 US gal)
Performance
0–60 mph (0–97 km/h)2.84 seconds
0–100 mph (0–161 km/h)5.22 seconds
0–150 mph (0–241 km/h)10.00 seconds
0–180 mph (0–290 km/h)17.21 seconds
100–150 mph (161–241 km/h)4.78 seconds
100–180 mph (161–290 km/h)11.99 seconds
1/4 mile10.01 seconds @ 150.05 mph (241.48 km/h)
Fuel economy32.4 mpg-US (7.26 L/100 km; 38.9 mpg-imp)