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| | | 2007 Kawasaki Versys: details |  Written: 09/10/2006 : 14:27. Read 24572 times (13/day). | Here are the details about the new Kawasaki Versys.
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ENGINE
When tuning the 649 cm³ Parallel Twin engine, our engineers' first priority was to find a throttle response that balanced a powerful feeling and a quick-revving character. To optimise performance for everyday riding (most of which takes place in and around the 50-75 Mph (80-120 Kph) range), care was taken to maximise low-mid range torque. When opening the throttle, riders will notice that the engineers succeeded in creating an extremely smooth and powerful engine character that offers both a high level of control when making minute throttle adjustments and a gratifying rush of acceleration in the lower rpm ranges.
* Intake and exhaust cams with short operating angles move the torque curve toward the lower end of the rpm range.
* To achieve smooth power and torque curves, the exhaust system makes use of a balance tube.
* Fuel injection settings for the Versys were selected primarily to deliver a strong powerful feeling when the throttle is opened.
* Performance and feel were optimised for the mid-range (3,000-6,000 rpm). However, in the low-rpm range (below 3,000 rpm), power delivery is very smooth, and even above 6,000 power and torque curves continue on without dropping off suddenly.
* The above settings result in a performance that favours speeds most used in everyday riding: the range in and around 50-75 Mph (80-120 Kph). Corner pick-up is excellent: the powerful mid-range delivers a satisfying surge of acceleration and the flat, step-free torque curve and smooth engine response let riders open the throttle with confidence - at any rpm.
* Triangular layout of the crankshaft and transmission shafts makes the engine very short front-to-back.
* Transmission input shaft, output shaft and change drum are contained in a "cassette"-style package that both allows a compact layout and facilitates transmission maintenance.
* Semi-dry sump design reduces engine height.
* Plated, linerless cylinder is lightweight, and the narrow cylinder pitch reduces engine width.
* Auto-fast idle system simplifies starting and ensures the catalyser reaches optimum temperature quickly.
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* Simplified cooling system routes coolant through the engine cases to the cylinder and head to reduce external plumbing.
* 180° crankshaft drives a balancer shaft for silky smooth engine operation.
* Oil jets located in the rod big-ends direct oil to the undersides of the pistons for added cooling.
* With the large radiator and under-engine muffler, the Versys offers superior comfort from a heat dissipation perspective.
CHASSIS
The key to the Versys’ sleek chassis is its compact Parallel Twin engine, which allows the use of a slim, lightweight frame. Together with the forward-located seat position and the under-engine muffler, this engine-frame combination delivers a highly centralised mass distribution, which contributes to the highly agile package. High priority was given to achieving chassis settings that deliver a high level of feedback, better enabling the rider to recognise the bike’s limits.
* The base frame construction and stiffness balance were set to offer a high level of feedback to the rider.
* The highly compact engine and under-engine muffler contribute to mass centralisation. The front cowl (including instrument panel and headlight unit) is mounted directly to the frame, minimising its effect on handling.
* The bike’s tall seat height and long-stroke suspension result in a higher CG. The resultant increase in agility makes the Versys even more fun to control.
* Chassis dimensions provide a balance of flickability and high-speed stability. (Although the Versys’ performance is optimised for the 50-75 Mph (80-120 Kph) speed range, it is quite happy to oblige riders who are able to travel at higher speeds.) With a wheelbase of 1,415 mm, the Versys can still be considered a "short wheelbase" model, and accordingly it delivers a high level of agility.
SUSPENSION
Not all streets in the real world are made of circuit-smooth pavement. Road imperfections (bumps, potholes) are far from rare, and some streets are not even paved (such as cobblestone, etc). While the Versys was not designed for off-road use, its long-travel front fork and rear shock were specially selected to cope with any street conditions it may come across, and, along with its 17" wheels, enable aggressive sport riding. Further, the long travel suspension provides an added dimension of controllability: the ability to consciously control the bike's front-rear weight transfer gives riders an additional riding element to explore.
* The long stroke of the inverted front fork and off-set laydown rear shock (F: 150 mm, R: 52 mm) allow experienced riders to actively control the bike's front-rear weight balance. Purposely increasing braking force to compress the front suspension before a corner reduces the caster, resulting in quicker steering. Alternatively, the rider can opt to brake less aggressively, maintaining the bike's attitude for smooth, stable turn in. The Versys puts this choice in the hands of the rider, so even the same corner can be enjoyed a number of different ways.
* Both the front fork and rear shock combine long travel with stiff springs. Standard off-road style long-travel suspension allows a bike to fly over bumps and ruts with ease, but this type of suspension was deemed to be too soft for the kind of riding we wanted to offer. Likewise with sport bike suspension, road holding is superb, but performance is best on (relatively) smooth roads. Combining both long travel and stiff springs yields the benefits of both off-road-style and sportbike suspension, offering excellent road holding in a wide range of street riding conditions and superb feedback, enabling aggressive sport riding.
* In addition to being tapered, the outer tubes of the 41 mm inverted front fork are relatively short (even at full compression, a large portion of the inner tubes remain visible) to provide the ideal stiffness balance to complement chassis settings.
* In order to accommodate the longer stroke of the rear suspension, an aluminium gulltype swingarm was chosen. The use of aluminium helps reduce unsprung weight.
* In addition to being lighter, using a simple non-link type rear shock offers more direct feedback from the rear wheel, contributing to greater rider "feel." The excellent feedback clearly communicates the bike's limits, increasing rider confidence.
* The ability of the rear suspension to soak up bumps and ruts was the key to being able to ride over cobblestone streets and handle road imperfections like rocks and potholes, etc. Consequently, a great deal of development time was also devoted to the tuning of the Showa rear shock unit. The high-grade unit makes use of a free piston and 2-stage damping valves to ensure smooth action at the initial part of the compression stroke and firmer damping near full compression, giving a more planted feel.
* This careful attention to the tuning of the rear suspension ensures the Versys can be ridden aggressively and with confidence through city streets, be they paved, brick or cobblestone.
* Both the front and rear suspension have adjustable rebound damping and preload. Along with a fork height adjustable by 8 mm, they offer riders a range of adjustability to experiment with should they so choose.
* 17" wheels front and rear contribute to the bike's quick steering. A 110 mm front tyre was considered, but in the end a 120 mm tyre was deemed to offer a better balance of quick steering and front wheel traction. Tyre sizes are as follows:
Front: 120/60ZR17M/C 58W
Rear: 160/60ZR17M/C 69W
ERGONOMICS
When engineers considered the kind of riding they wanted to offer, and the speed range most often used in everyday riding (50-75 Mph / 80-120 Kph), a naturally relaxed posture and high controllability care of a slim, upright position with wide handlebars was deemed ideal. Because it would have a great impact on rider control and enjoyment, a substantial amount of development time and effort was devoted to fine-tuning the riding position.
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* The combination of a compact Parallel Twin engine and a narrow, lightweight trellis frame enabled by an offset laydown suspension is the key to the Versys' slim riding position.
* A short-style tank positions the rider closer to the front wheel for increased controllability and offers a greater choice of forward-rearward sitting positions.
* The seat's slim design and the knee grip characteristics of the tank afford good freedom of movement, allowing the riders to change sitting position should they so choose. Thicker urethane increases comfort and contributes to a seat height that places the rider in a position of fun controllability. The stepped shape of the two-piece seat also provides support for the rider when accelerating.
* Complementing the wide handlebar, the footpegs are positioned low and slightly forward of the seat. Wide, rubber covered footpegs help reduce unwanted vibration and offer increased freedom of mobility.
* Together, all these points result in a very natural, relaxed position designed to offer the rider a high level of machine control. The upright riding position accommodates a variety of riding styles (lean-in, no-lean, lean-out), broadening the spectrum of riding enjoyment and also offers a high level of comfort, a great benefit for touring. This combination of comfort and control is one of the things that makes the Versys so much fun to ride.
* When combined with the long-stroke suspension, the upright riding position and higher seat height offer a commanding view of the road ahead - especially advantageous when navigating city traffic or winding roads in the hills.
TOURING POTENTIAL
An adjustable windscreen helps reduce wind noise and helmet buffeting, creating a serene space behind which to enjoy high-speed riding.
* The adjustable windscreen has three different settings (each 20 mm apart), allowing riders to tailor its height to suit their preferences. (Adjustment is via a 4 mm hexagonal wrench.)
* A tall screen is also available as an option.
For riders who prefer longer excursions, a comfortable seat, relaxed riding position, large volume fuel tank, protection from the adjustable windscreen and enhanced touring potential make the Versys a very capable touring partner. A number of optional accessories further increase the Versys' touring potential.
* Along with the comfortable seat, the relaxed position enables rider to spend long hours in the saddle.
* A 19-litre fuel tank combined with excellent fuel economy offers an ample touring range.
* In addition to the optional top-case, specially designed large-volume GIVI panniers are available as options. Each pannier can hold a full-face helmet and is rated for 5 kg (like the top case).
* Passenger footpeg stays and the reinforced sub-frame were designed to accommodate the optional panniers and top case. The sub-frame's additional strength contributes to increased stability when carrying luggage or a passenger.
* Thanks to the under-engine muffler, the bike's profile can stay relatively slim even with the panniers attached.
* Pillion footpeg stays and grab bars can double as tie-down points for securing luggage.
TANDEM COMFORT
Sometimes sharing the ride is half the fun. The Versys has a number of features that make tandem riding enjoyable for both rider and pillion.
* Each part of the two-piece seat was designed with different thickness and firmness of urethane, optimising comfort for both the rider and passenger.
* Pillion position was also designed to offer a natural seating position. Pillion grab bars are located in a natural position, further increasing passenger comfort.
* The comfort afforded by the slim layout (possible thanks to the under-engine muffler) also extends to the passenger. A further benefit is that heat is kept away from the passenger.
* Layout is such that a passenger can also be comfortably accommodated when the optional panniers are attached.
ADDITIONAL FEATURES
* All-new instrument panel features white LED-backlighting for increased visibility at night. Features include a digital speedometer, analogue-style tachometer, digital fuel gauge, odometer, dual trip meter, etc.
* The stacked dual headlight with dual position lamps on the left and right gives the Versys a unique face. On low-beam setting only the upper lamp is lit; both lamps light up on high-beam setting.
* Compact turning indicators complement the Versys slim chassis.
* LED taillight with a clear lens gives the tail a clean, tidy look.
* Under-seat storage space has room for a U-lock or similar device.
* The turn signals also function as hazard lights.
* Triple petal disc brakes offer superb stopping power and feel at the lever. 5 mm thick front discs contribute to enhanced controllability.
* For additional braking reassurance, models with front and rear Bosch ABS are available in some markets.
SPECIFICATIONS
ENGINE
Type: Liquid-cooled, 4-stroke Parallel Twin
Displacement: 649 cm³
Bore and Stroke: 83 x 60 mm
Compression ratio: 10.6:1
Valve system: DOHC, 8 valves
Fuel system: Fuel injection: ø38 mm x 2 (Keihin)
Ignition: Digital
Starting: Electric
Lubrication: Forced lubrication, semi-dry sump
DRIVETRAIN
Transmission: 6-speed, return
Final drive: Sealed chain
Primary reduction ratio: 2.095 (88/42)
Gear ratios:
- 1st: 2.438 (39/16)
- 2nd: 1.714 (36/21)
- 3rd: 1.333 (32/24)
- 4th: 1.111 (30/27)
- 5th: 0.966 (28/29)
- 6th: 0.852 (23/27)
Final reduction ratio: 3.067 (46/15)
Clutch: Wet multi-disc, manual
FRAME
Type: Diamond, high-tensile steel
Wheel travel:
- front: 150 mm
- rear: 145 mm
Tyre:
- front: 120/70ZR17M/C (58W)
- rear: 160/60ZR17M/C (69W)
Caster (rake): 25°
Trail: 108 mm
Steering angle (left/right): 35° / 35°
SUSPENSION
Front: 41 mm inverted telescopic fork with stepless (right-side) adjustable rebound damping and adjustable preload
Rear: Offset laydown single-shock with 13-way adjustable rebound damping and 7-way adjustable preload
BRAKES
Front: Dual semi-floating 300 mm petal discs
Caliper Dual piston
Rear: Single 220 mm petal disc
Caliper Single-piston
DIMENSIONS
Overall length: 2,125 mm
Overall width: 840 mm
Overall height: 1,315 mm
Wheelbase: 1,415 mm
Ground clearance: 180 mm
Seat height: 840 mm
Dry weight: 181 kg
Fuel capacity: 19 litres
PERFORMANCE
Maximum power: 47 kW {64 PS} / 8,000 rpm --- 25 kW {34 PS} / 6,500 rpm (25 kW kit)
Maximum torque: 61 N·m {6.2 kgf·m} / 6,800 rpm --- 50 N·m {5.1 kgf·m} / 3,000 rpm (25 kW kit)
The specifications mentioned here apply to and have been achieved by production models under standard operating conditions. We intend only to give a fair description of the vehicle and its performance capabilities but these specifications may not apply to every machine supplied for sale. Kawasaki Heavy Industries, Ltd. reserves the right to alter specifications without prior notice. Equipment illustrated and specifications may vary to meet individual markets. Available colours may vary by market.
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