Sunday, June 5, 2011

New Modification - Kawasaki Ninja 250R


Kawasaki Ninja 250R is the latest variant of the Kawasaki Ninja249 cc engine, tempting for users of motor racing. Motor racinghas been the talk since 2007 is manufactured in Thailand and intoIndonesia in mid 2008. With a compression ratio of 1: 6.11, Ninja250 R is enough to drain the bag because he drank gasolinePertamax plus class. However, this is commensurate with his ability, the Ninja has a maximum power of 11 000 revolutions perminute (rpm) and it generates maximum torque 9500 rpm.


The main problem (especially for me, hehehe ...) is the price isalso fantastic. Information from Compass, the Ninja 250R isreleased at a price of Rp. 44 million, although official overseasaverage of about U.S. $ 3,499.

For those of you who want to ride the Ninja but want specs that is cheaper, can take the Ninja RR 150 (ca. 30 million), Ninja (ca. 23million) or Ninja M (ca. 20 million).
I checked the website Kawasaki, the Ninja 250R is not there, so Ican not see the specification details. Ninja 250R Specificationsmay be something like 150RR with various fixes and performance improvements.

DOHC 249cc Parallel Twin-cylinder Engine




- Compact parallel-twin design offers good mass centralization for superior handling 
- Tuned to deliver smooth, step-free power with an emphasis on low- and mid-range power for rider-friendly response 
- Pistons feature reinforced heads and strengthening in the pin boss area for increased durability
- Thick piston (longitudinally) rings help minimize oil consumption
- Combustion chamber design optimized to maximize combustion efficiency and reduce emissions
- Ample high-rpm performance will please riders using the full range of the engine

Cylinder head 
- Refined intake and exhaust ports contribute to good off-idle response and smooth power delivery
- Valve timing and lift were designed for strong low- and mid-range torque
- Direct valve actuation ensures reliable high-rpm operability
- Valves with thin heads and stems reduce reciprocating weight

Carburetor 
- Twin Keihin CVK30 carburetors fine-tuned for good power feel and low fuel consumption

Exhaust system
- 2-into-1 system contributes to the Ninja 250R’s low- and mid-range torque and smooth, step-free power curve
- Slightly upswept silencer extensively tested to determine chamber size, connecting pipe length and diameter to achieve least noise and most power 
- Meets strict emissions with dual catalyzers; one in the collector pipe and the other in the silencer
- Using two catalyzers minimizes the power loss
- Positioning the first catalyzer as close to the exhaust ports maximizes its

Reduced mechanical noise 
- Cam chain tensioner with an automatic adjuster, like that on the KXâ„¢450F motocrosser, eliminates mechanical noise caused by a loose cam chain and reduces power-robbing friction loss
- Silencing mechanical noise allows the use of a freer flowing exhaust for a better sound quality
- Complex construction with reinforcing ribs helps eliminate airbox reverberation and reduce intake noise
- Air filter accessible from the side, for easy replacement

Liquid Cooling
- Latest generation Denso radiator offers superior cooling with minimal space and weight
- Ring-fan uses a quiet-running motor that also saves space
- Fins on the lower side of the crankcase further helps cool the engine

Six-speed Transmission / Clutch
- Involute splines reduce friction and backlash between gears and shafts for easier gear meshing and smooth shifting under power
- Spring-type clutch damper reduces jerkiness at very low speeds and minimizes shocks when rolling on and off the throttle for a smoother clutch feel
- Paper-base friction plates help increase clutch durability