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Wednesday, June 17, 2009

Review for Suzuki DRZ 400SM



The Suzuki DRZ 400 SM is a great performing motorcycle with enough power to be fun on the freeways or in the city. It is geared more towards the street compared it's brother the Suzuki DRZ 400S which comes with nobbier tires and a little more torque. Read on for the full review!

The Engine
A Lightweight 398cc, liquid-cooled, dry-sump engine powers the DRZ 400SM and it is ideal at delivering strong, low end torque. This makes low speed maneuvers in tightly packed traffic a relative breeze compared to most top-end focused street bikes. This is the completely opposite of the Kawasaki Ninja 250 which really requires you to wind up each and every gear if you want some decent performance. The DRZ comes with a 5-speed gearbox which will let you keep up with the cars on the freeway too, this really opens up the options for this bike and makes it all the more versatile . Some of the 200cc dual sports like the Suzuki DR200SE will have trouble keeping up with other cars at high speeds, but you will feel perfectly fine cruising at 50-70mph on this bike.

Made for the Street
Although you can take the DRZ 400SM off-road the bike handles much better on the pavement than in the mud. In fact this bike handles as well as most street bike in the twisties ! Because the bike is a dual sport you will have much more confidence in your turns since you will have more ground clearance and the suspension can handle all sorts of cracks and potholes that you might want to avoid on a super sport motorcycles. Even though I wouldn't do hardcore off-roading with this bike, light trails and dirt roads are no problem even with the street oriented tires.

Modifications
It seems like most dual sports come really limited right out of the box because of all the emission standards they have to meet, and this moto is no exception. If you are handy with a wrench then you will be pleasantly surprised at how much power you can squeeze out of the 398cc engine. Most people say putting an aftermarket pipe on is a must (I recommend Muzzy!), especially when combined with a moddedairbox and jet kit. This will provide a noticeable increase in both low end torque and top-end power that makes riding this motorcycle oh so much fun!
Don't bust out the toolbox just yet! Depending on the state you live in these aftermarket modifications might be illegal. That means a cop can pull you over even if you aren't speeding or riding recklessly! When it comes to the police I try to follow the advice a friend gave me once:"Try and only break 1 law at a time."
If you are going to mod out your bike, then stick to the speed limit! If you are going to run your bike stock, feel free to be a little more liberal with the throttle :) So far that advice has kept me ticket free my whole life.

Summary
This is a really solid dual-sport and if I lived in San Francisco or some other big city I would probably get one of these instead of a street bike. I really like how you aren't limited to below 50mph like some of the smaller bikes, plus the stock suspension and stock tires are pretty darn good right out of the box. This would be the ultimate post-apocalyptic hooligan bike, or just your every day commuter as well.

Pros:
Bigger engine lets you go higher speeds than smaller dual sports
Naked and therefore won't get damaged much in the case of a drop
Low end torque is much more usable compared to top end

Cons:
The bike is as heavy as some other 650cc dual sports out there
Requires mods to really bring out the power (but that is good for a beginner!)

for another DRZ series look at Suzuki DRZ400E

review from www.bestbeginnermotorcycles.com

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Monday, June 1, 2009

Kawasaki Ninja 250R Indonesia


this is the bike i want to have so much..
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 efficiency as well

Reduced mechanical noise
- Cam chain tensioner with an automatic adjuster, like that on the KX450F 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

Chassis
- Sturdy and durable diamond-style frame of thick-walled steel tubing offers confidence-inspiring stability at both high and low speeds
- Beefy swingarm bracket contributes to the frame’s rigidity and helps achieve an ideal chassis stiffness balance
- Square-tube swingarm with a 60 x 30mm cross-section further adds to rigidity

Suspension
- New 37mm telescopic front fork with firm settings contribute to the Ninja 250R’s smooth, stable handling and enhanced ride control
- Uni-Trak rear suspension compliments the rigid frame and re-tuned fork and provides great road holding ability
- Rear shock features 5-way adjustable preload, enabling ride height to be maintained whether riding solo or with a passenger

Wheels / Tires
- Features 17” wheels like its larger supersport brothers
- Low-profile sportbike tires on wide rims contribute to its easy, neutral handling at low speeds

Brakes
- Large-diameter, 290mm front petal disc and a balanced action two-piston caliper offers excellent braking performance and a natural, direct feeling at the lever
- Two-piston caliper grips the rear 220mm petal disc

Ergonomics
- Natural riding position with slightly forward-slanting seat and wide, raised handlebars

Bodywork
- Styling matches its larger-displacement Ninja supersport siblings
- Fit and finish of striking full-fairing bodywork on par with that of top-class Ninja supersports
- Aggressive dual-lamp headlight design, slim tail cowl and separate seats further enhance the supersport look
- Front cowling and windscreen offer the rider a substantial amount of wind protection
- Two helmet holders conveniently located under the rear seat
- Under-seat storage can hold a U-lock or similar device
- Two hooks under the tail and the rear passenger pegs provide anchor points for securing items to the rear of the bike

Instrumentation
- Instrument panel features an easy-to-read, large-face analog speedometer along with an analog tachometer, odometer, trip meter, fuel gauge and warning lights

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