New grips with long tapered cushions and deep pre-cut wire grooves. Improved fuel consumption.

Transcription

1 CRF450R Revolutionary Ergonomics Design includes a more open and easy ride position. New grips with long tapered cushions and deep pre-cut wire grooves. New fuel injection indicator for pre-race check. Improved fuel consumption. New 5 th generation cast frame is lighter, stronger and slimmer. New steering damper re-valved for more linear damping with new design front fork. New KYB rear damper. New, bigger (48mm) KYB front fork. New exhaust layout for lower weight and better mass centralisation. 11. Large, Works-style 240mm front and rear disc brake rotors. Long swingarm and wide rear tyre for better traction and acceleration. Low mass centralisation gives a highly controlled ride feel and makes jumping and manoeuvring in the air easier. Smooth clutch action decreases rider fatigue and increases control. Powerful 4-stroke 4-valve Unicam engine with new cam link type decompressor and new thin-walled crank case casting for reduced weight; plus new batteryless fuel injection/ignition system with automatic settings that provide consistent performance in differing altitudes I CRF450R I Press Information

2 CRF450R 2009 Press Information UK-EN 1/6

3 Introduction Features and Benefits The meteoric rise of the invincible CRF450R has taken it to the highest realms of Supercross, motocross, desert, endurance, flat-track and Supermoto where it relentlessly punishes the competition time and time again. Constantly stepping up its game, the 2009 model is ready to dominate the battlefield once again with a new fuel injection system, more speed, more control, more reliability, more power and more performance. The only thing there s less of is weight, making it the lightest and most manoeuvrable machine in its class! Faster lap times Testing on a sandy, supercross-style circuit revealed a lap time that s a scorching 2 seconds faster than that delivered by the 2008 model. As well as that all-important weight reduction (a full 1.8 kg!), the engine has been reengineered for easier riding, quicker response, better cornering and smoother power delivery. Every single component has been revised for the ultimate mass centralisation. Dimensions are changed for better traction out of the corners matched by faster acceleration. Even starting time is faster by 0.1 seconds from 0-10m, and 0.2 seconds from 0-50m. Better jumping performance The new CRF450R is slimmer, lighter and smoother, with a lower centre of gravity making control in the air easier. Aerodynamics have been honed for bullet-like projection through the air. Improved mass centralisation and lighter weight minimise inertia feel for a sensation of accomplished control and expert handling. Torque feeling is improved everywhere and overall performance is fast, slick and exhilarating. This latest evolution is set to fly the CRF flag high at the pinnacle of motocross achievement, the peak of joygiving aerobatic performance. Weekend warriors and factory pros alike - get ready to test your limits and bring even the toughest competition to its knees. New for 2009 New lightweight, batteryless fuel injection/ignition system delivers enhanced performance, a wider, higher power range and improved power delivery, as well as kick-start capability. New fuel injection indicator integrated with engine stop switch shows pre-race conditions of the fuel injection system for Motocross racers. The concept of an indicator for a pre-ride check is a first for motocross. (Honda first!) New fuel injection system features automatic settings that deliver the same engine character and driveability in differing altitudes. Improved fuel consumption enables tank capacity to be decreased (by 1.5L), thus facilitating more weight savings. New cam link type decompressor reduces weight by integrating decompressor and camshaft. New thin-walled crank case casting reduces wall thickness to 2.0mm and achieves a weight reduction of 200g. (Honda first!) New plastic fuel pump module attached to bottom face of plastic fuel tank responds directly to fuel pressure and is placed to concentrate mass on motorcycle s centre of gravity. (Honda first!) Rev limit increased 180 rpm. Large-diameter throttle body (50mm) delivers more power and enhanced performance across the entire range. Oil capacity decreased by 0.1 litres to allow for a lighter and more compact engine configuration. Colours Extreme Red (with White number plate, side covers and rear fender) UK-EN 2/6

4 New HRC settings kit, developed from HRC s long years of experience in racing technology, provides an easy-to-use programming system with precise data for setting up the machine to meet all race situations. Ignition timing and fuel mapping settings can be uploaded by connecting the motorcycle to a computer and following simple step-by-step instructions. The system radically simplifies the setup process and will make tuning accessible to a broader range of riders. New steering damper re-valved for more linear damping with new design front fork. New 5th generation frame is manufactured by casting rather than forging of two components, resulting in a weight reduction of 410g and increased lateral and torsional stiffness (4% lateral; 6% torsional) for optional strength and excellent response to rider input. New frame shape is slimmer overall with rounded lower parts providing 1mm more ground clearance. Revolutionary Ergonomics Design includes a more open and easy ride position. Flatter seat to tank area allows the rider to move from front to rear more easily. New profile is also smoother and narrower from radiator shroud to air box to side panel, giving a smoother ride. New exhaust header design from the left side of the cylinder head exhaust port achieves optimal pipe length for the new fuel-injected engine. It also enables placement of the titanium muffler 115mm forward compared to the previous model, and contributes to mass centralisation. New, KYB rear damper and bigger (48mm) KYB front fork give better stroke feel, action & control for a plush overall feel and improved bump impact. New longer swingarm and new, wider rear tyre contribute better acceleration and traction. New design grips feature longer tapered cushions and deep pre-cut wire grooves for tighter, slip-free wire grip. New brake disc shape contributes 65g weight reduction (front 37g; rear 28g). New seat with newly textured side surface contributes to better grip. Improved clutch action gives smoother up and down shifting, decreases rider fatigue and increases control. New dimensions with centre of gravity moved lower and longer swingarm give good front traction feeling and improve acceleration. New plastic body parts with slim, aggressive styling allow rider to move easily and feature new Honda Racing inspired colours and graphics. Engine/Drivetrain Powerful advanced 4-stroke 4-valve Unicam engine churns out 41.5kW of power at 8,500rpm and 50.3Nm of torque at 7,000rpm. Power is produced across a broader rpm-band for smoother, easier operation. Liquid-cooled 449cm³ Unicam engine pumps out nearly 92.4kW per litre while retaining its legendary simplicity and dependability. Innovative Unicam valve train provides both the light weight of a compact single-cam drive and an optimum combustion chamber shape for maximum power at all engine speeds. Unicam valve train features a single carburized camshaft directly actuating two 36mm titanium intake valves. The new cam link type decompressor executes valve-lifting by causing the plunger that is built into the camshaft to push the rocker arm on one side. This contributes to the overall compactness and light weight of the design by integrating decompressor and camshaft weight. Lightweight titanium intake valves permit use of smaller valve springs and reduce overall engine height. Intake valve design has been revised for better mass centralization. Forged slipper piston is lighter than conventional designs, for quick-revving response while maintaining excellent cylinder sealing and high-rpm power. UK-EN 3/6

5 Lightweight Ni-SiC cylinder lining ensures cooler and quieter operation for extended engine life. Auto decompression and hot restart system make starting easy in all conditions. Twin-sump lubrication system separates oil supply to crankshaft, piston and valve train from clutch and transmission. This ensures a steady supply of cool oil to the clutch, eliminates clutch and transmission material contamination of the engine oil, and reduces the amount of circulating oil along with the oil pump size. New exhaust layout achieves lower weight and maximum mass centralisation. Gear-driven balancer reduces vibration while also driving the water pump. Eight-plate clutch provides ample surface area to handle the engine s massive torque, while carefully matched clutch springs provide a light feel at the lever. Entire engine assembly weighs only 27.1kg, 1.8kg less than that powering the 2008 model. Chassis/Suspension Low mass centralisation gives a highly controlled ride feel and makes jumping and manoeuvring in the air easier. Compact and slim chassis cross-section combines with new ergonomics for a smoother, easier ride. The area between seat and fuel tank is flat, and the fuel tank cap size reduced, making it easier for the rider to move along the seat. New rear frame design incorporates easier underseat access to air filter. Front and rear wheels feature HRC Works-type aluminium spoke nipples for reduced unsprung weight. Front wheel features new stiffer axle collar, providing excellent rigidity. axle wall thickness is reduced (from 2.5 to 2.2 mm) to save 38g of weight, while axle collar is strengthened for better rigidity. Lightweight, and compliant 48mm inverted fork. Front fork outer-tubes receive Kashima coating for low-friction operation. Fork offers 310mm of suspension stroke, and 16-step rebound and 18-step compression damping adjustability. New, fully adjustable rear damper with 320mm of wheel travel, 18-step low-speed and 1.5-turn highspeed compression and 20-step rebound damping. Large 50mm-diameter rear damper cushion provides consistent performance under demanding riding conditions. Compact dual-piston front brake calliper designed for light weight. HRC Works-type rear brake system integrates the rear master cylinder and fluid reservoir, eliminating conventional external reservoir and hose. Link-type front brake master cylinder provides strong braking control in combination with a lightweight brake rotor. Large, Works-style 240mm front and rear disc brake rotors. Frame design allows large air intake ducts in the sidecovers, enabling significant air flow in the mid and upper-rpm ranges. Additional Features Unique lightweight and compact Honda Progressive Steering Damper (HPSD) developed by Team Honda for improved cornering ability and reduced rider fatigue. HPSD features a compact and rugged hydraulic damper attached between the steering head and the lower triple-clamp to augment more aggressive steering characteristics and assist straight-line handling. The damper s progressive damping action smoothly increases with handlebar deflection, which produces very natural steering characteristics and feel. UK-EN 4/6

6 Rider ergonomics are optimised by adapting the handlebar, seat and footpeg height to place the rider s legs at the narrowest cross-section of the frame for improved comfort and handling feel. Brake pedal and shift lever designed to complement the riding position. Brake pedal features optimised ratio to match integrated rear-brake master cylinder design. Wide, cleated stainless steel footpegs are selfcleaning, corrosion-resistant, provide excellent grip and fold for extra ground clearance. brake pedal and shift lever made of lightweight aluminium. Adjustable front brake lever for maximum control. Quick-adjust clutch perch for easy cable adjustment. Aluminium Renthal 971 bend handlebar rubber mounted to reduce rider fatigue and improve comfort. Handlebar holders provide two different mounting positions to match rider preference. Pirelli MIDSOFT 32 tyres provide improved traction and cornering feel. Front disc brake cover helps protect rotor and calliper from damage. Removable rear sub-frame allows easy maintenance. Washable, two-stage foam air filter for optimal engine protection and easy maintenance. Re-packable titanium silencer for maximum performance and minimal noise. Comfortable, durable controls and high-quality fasteners. Stainless steel clutch cable for long-life operation. UK-EN 5/6

7 Specifications General Model CRF450R Wheels Front Aluminium rim/wire spoke Mold ED-type Aluminium rim/wire spoke Engine Displacement Liquid-cooled 4-stroke 4-valve SOHC single 449cm³ Rim Size Front 21 x x 2.15 Tyre Size Front 80/ (51M) Bore x Stroke 96 x 62.1mm 110/90 19 (62M) Compression Ratio 12 : 1 Brakes Max. Power Output Max. Torque Fuel System 41.5kW / 8,500min -1 (95/1/EC) 50.3Nm / 7,000min -1 (95/1/EC) Front 240mm hydraulic disc with dual-piston calliper and sintered metal pads 240mm hydraulic disc with single-piston calliper and sintered metal pads Carburation PGM-FI electronic fuel injection Fuel Tank Capacity 5.7 litres Electrical System Ignition System Full transistor with digital ignition Starter Primary kick Drivetrain Transmission 5-speed Primary Reduction (63/23) Gear Ratios (27/15) (25/17) (21/17) (21/20) (20/22) (48/13) Final Drive #520 roller chain Frame Aluminium twin-spar Chassis Dimensions Wheelbase 2,191 x 827 x 1,273mm 1,491mm Caster Angle 26 52' Trail Seat Height Ground Clearance Kerb Weight 114.2mm 954mm 332mm 106.9kg Suspension Front 48mm inverted leading-axle twin-chamber cartridge-type telescopic fork with 16-step adjustable compression and 18-step rebound damping; 310mm suspension travel Pro-Link with damper, adjustable low-speed (18-step) and high-speed (1.5-turn) compression and 20-step rebound damping; 320mm axle travel All specifications are provisional and subject to change without notice. UK-EN 6/6