Motorcycles

• Ultra-lightweight, compact, 998cc, DOHC, 16-valve (4-valves / cyl.), liquid-cooled, in-line four-cylinder engine with "cross plane" style crankshaft.
• The key components of this cutting edge engine design are the "cross plane" crankshaft and an uneven firing order. Both of these features are used on Yamaha's race winning M1 MotoGP racer. The R1 cross plane crankshaft locates the center two rods at a 90 degree plane from the outer cylinders. Instead of the crank pins aligned on the same plane (a straight line drawn through the center of the crankshaft), they align on 2 planes in the form of a cross ... or "cross plane". Working in conjunction with the cross plane crank is an uneven firing order. This R1 engine fires 1,3,2,4 cylinders and the firing intervals are uneven at 270 / 180/ 90 /180 degrees. What all this means to the rider is the most linear torque possible and amazing throttle control. This engine design allows a whole new level of rider - machine communication. One of the most important benefits is the outstanding cornering performance that increased engine / throttle control allows.
• The key engineering goal for the R1 series is significant horsepower with excellent controllability, making the bike easier & more enjoyable to ride. The R1M is a "rider's machine".
• 4-valve cylinder head design
  • compact pent roof combustion chambers with 13:1 compression ratio
  • lightweight 33 mm intake titanium valves & 26.5 mm steel exhaust valves
  • 4-valve design optimizes breathing efficiency & overall engine performance
  • combustion chambers are machined to ensure exact volume spec for maximum power
• Special intake port shape provides maximum filling efficiency.
  • port shape, valve placement & combustion chamber shape induce a tumbling effect of the inbound fuel - air charge that increases combustion speed, power & torque
• "Finger follower rocker arms"
  • reduces friction, allows greater valve lift & provides super accurate control of valve opening & closing at high rpms
  • sliding area of the rocker arms feature a DLC (diamond like coating) to reduce friction & wear
  • valve adjustment pads sit under the rocker arm
• Valve adjustment intervals are every 42,000 kms.
• High performance intake & exhaust cams
• Closed deck aluminum cylinder with "liner-less" ceramic composite plated cylinder bores.
  • ceramic coating sprayed directly on the aluminum block, eliminating the liner & reducing weight
  • excellent heat dissipation for consistent power delivery
  • coating enhances the thin film of oil between the cylinder & piston, reducing friction & increasing power
  • closed deck design allows cylinders to be spaced more closely together, reducing engine width
  • cylinder is a stand-alone design (not integrated into the upper crank case)
• Offset cylinder design
  • offsets cylinder block relative to the crankshaft (to the exhaust side) to reduce frictional losses between the piston and cylinder wall during the power stroke for improved power output
• Short skirt, forged aluminum pistons.
  • light weight design for fast throttle response
  • piston features a box shaped "bridge box " on the underside for increased rigidity &
  • durability
  • special Defric coating on skirt to further reduce friction
  • ring expansion tension is optimized to reduce frictional losses
  • piston oil coolers spray oil at the underside of piston to reduce temperature
• Cross plane crankshaft design.
  • crank inertial moment has been engineered to achieve linear throttle response, strong acceleration & excellent cornering exit control
• Super light, fracture split titanium connecting rods feature a "nutless" design.
  • lower end "cap" of the rod is made from the same piece of material as the upper portion; the 2 pieces are "split" apart using a special process known as fracture splitting & then machined
  • lightweight titanium design (60% lighter than a conventional steel con rod) reduces horsepower losses & provides faster throttle response
  • fracture split "Ti" rods are a world's first to be used on a production motorcycle
• Single axis balancer shaft
  • reduces engine vibration
• Crankcases feature a "Tri-Axis" layout for the crank, main and drive axles.
  • creates a more compact & shorter engine front to back
  • shorter engine allows for optimum engine placement in the "sweet spot" of frame for desired weight distribution & great handling
• Closed loop, 45 mm Mikuni throttle body fuel injection system with twin injectors.
  • twin injector (primary & secondary) system is used on our MotoGP M1 race bike & YZF-R6
  • primary injectors are located in the throttle bodies, secondary injectors located in the air box very near the computer controlled intake funnels
  • both primary & secondary injectors utilizes 12 spray holes to maximize fuel atomization
  • secondary injectors, located inside the air box, begin to function at mid rpms to redline
  • "closed loop system" uses dual oxygen sensors to sniff spent exhaust gases & automatically adjusts the fuel / air ratio for reduced emissions
  • fuel injection benefits include instant throttle response, choke-free starting, steady idle during warm up & reduced emissions
• Yamaha Chip Control Throttle (YCC-T)
  • YCC-T electronically controls throttle valves for outstanding throttle response & controllability
  • system features Throttle Position Sensor (TPS) and D.C. motor driven throttle valves
  • YCC-T system provides precise control of intake air volume for a smoother torque curve
  • ECU that controls YCC-T is capable of responding to changes at a speed of 1000th of a second
• Yamaha Chip Controlled Intake (YCC-I) system
  • intake funnels / stacks vary in length between 2 pre-set positions depending on engine rpm
  • electronic servo motor varies the funnels. The revolutionary YCC-I provides the best of both worlds... solid low rpm torque & power combined with an amazing high rpm rush. It takes only 0.3 of a second for the funnels to move from the tall to the short position
• Compact 6-speed transmission.
  • features optimized gear ratios matched to engine output for maximum performance
• Compact, lightweight slipper or back limiter clutch assembly with assist.
  • reduces rear wheel hop when making down shifts under hard braking
  • key benefit is reduced lap times & smoother control when participating in a race or track day
  • assist function reduces clutch lever effort
• Ram Air Induction System
  • features centrally located intake duct between the LED headlights, delivering cool, "force-fed" air which pressures the air box & increases power output at higher speeds
  • straight shot induction from centrally located fairing duct to air box without bends or turns
• Large capacity 10.5 litre air box
  • large capacity maximizes performance
  • M1 inspired intake duct with solenoid valve reduces intake noise & improves high rpm power
  • viscous type, high flow air filter is used
• Mid ship design 4 into 2 into 1 exhaust system
  • features lightweight titanium header pipes & muffler for reduced weight
  • design maximizes power, reduces weight, centralizes mass & lowers the centre of gravity for fast, light, agile handling
  • dual 3-way honeycomb catalyzers which reduce harmful exhaust emissions.
• Special exhaust valve device
  • located in under engine chamber & features two separate exhaust flow routes based on rpm
  • system allows a more compact muffler design that provides outstanding power output & torque characteristics while still providing sufficient silencing
• Yamaha's EXUP System (Exhaust Ultimate Power Valve).
  • part of the mid ship exhaust system
  • utilizes a titanium body & butterfly valves that prevent the "blow back" phenomenon caused by "valve overlap"
  • design reduces weight & maximizes cornering clearance
  • EXUP system eliminates "flat spots" in the power band & reduces emissions too
• High-efficiency, high capacity curved radiator.
  • curved rad provides more cooling surface area than a conventional flat rad
  • ring-type fan provides increased airflow (and cooling) versus a standard cooling fan
• Air-cooled oil cooler sits below the main rad to maintain stable lubricant temperatures.
• Optimized wet sump lubrication system
  • features special oil routing to the big end rod bearings
  • lightweight, deep bottom magnesium oil pan significantly reduces weight
  • convenient spin-on type oil filter is used.
• Super lightweight magnesium cylinder head & crankcase covers secured by aluminum bolts.
  • magnesium offers significant weight savings
• Compact ACM (alternator) is mounted directly to the crankshaft.
  • compact ACM uses rare earth magnets which produce more power for a given size than conventional magnets, therefore reducing size & weight
• Maintenance-free transistor controlled ignition (TCI).
  • produces a strong spark for fast starts
  • provides precise ignition timing / mapping for optimum engine performance at all rpms
• Direct ignition coils, iridium dual electrode spark plugs & high-output magneto.
  • ignition coils integrated into plug caps, significantly reducing weight & complexity

Many of the following rider assist aids are derived from Yamaha's MotoGP race efforts and help make the R1 more controllable & more enjoyable to ride. We call them Yamaha Ride Control or YRC.

• designed to offer an optimized rigidity balance to maximize handling & suspension performance. Frame provides a balance of strength, rigidity & tuned flex
• engine is a stressed member with rigid mounts
• benefits include reduced weight, excellent high-speed stability & cornering characteristics, excellent traction / drive characteristics exiting a corner and a greater freedom in choosing or changing a line through a turn

• reduces weight
• allows easier rear shock access & reduces costs in the event of damage

• provides great torsional rigidity for excellent rear wheel traction & control
• swingarm length is 570 mm
• design & length help reduce effects of chain tensioning during hard acceleration
• swingarm is polished aluminum & clear coated (not painted)

• 1405 mm wheelbase, 24 degree caster angle, 102 mm of trail
• 56 degree maximum lean

• "ERS" further enhances the performance potential of the R1M with electronically controlled independent damping front & rear
• spring preload (front & rear) are set manually... 15 turns of front preload & 9 mm of threaded rear spring preload
• based on data from IMU & various sensors, the Suspension Control Unit (SCU) makes automatic, independent adjustments of both front & rear suspensions' compression & rebound damping based on real time riding conditions
• SCU (suspension control unit) calculates the ideal damping for the front & rear suspensions
• ERS has a choice of "Automatic" or "Manual" modes. Within these 2 modes there is also a selection of 3-running modes each, for a total of six different settings to fit rider preferences or track conditions.
• Two of the "Automatic" modes have fine adjustment functions for damping force
• Manual mode cancels the semi - active damping & reverts to a "tune-able" traditional suspension with a significant adjustment range

• incredible braking performance with excellent control & lever feedback.
• radial mount design helps to reduce caliper distortion for improved braking performance
• Nissin radial master cylinder
• stainless steel mess brake lines
• 6-position adjustable brake lever

• main benefit of ABS is excellent control under hard braking or braking on wet or slippery surfaces
• when ABS system senses impending wheel lock-up (via active type wheel sensors) it regulates the hydraulic brake pressure to the point just before the wheel(s) lock-up
• UBS system "unifies or links" the front & rear brakes when the front brake is applied
• applying the front brake will engage the UBS and to a varying degree will apply some rear brake force too. The amount of rear brake force is based on the attitude & lean angle of the bike.
• if only the rear brake is applied, the UBS will not apply any front wheel brake force

• over 1 kg of weight savings Vs. the '14 wheels (last generation)
• lightweight design reduces unsprung weight & contributes to excellent suspension & handling performance
• front rim size is MT3.50 x 17, rear rim is MT6.00 x17
• R1M features a 200 series rear tire... 200/55ZR17

• tank provides excellent knee grip for hard braking & easy manoeuvrability
• elongated shape helps to centralize mass & reduces variance in riding feel as the fuel load (weight) changes
• 3 litre reserve capacity (fuel trip meter activates)
• R1M tank is polished & clear coated (not painted)

• wind tunnel designed windshield offers excellent aerodynamics & features a "screw less" design
• air resistance(fairing) has been reduced by 8% compared to '14 model (last generation)

• create a "face" never seen before on a motorcycle & provides stylish & unique look for the R1
• excellent illumination & visibility
• reduced power consumption

• displays have been concentrated into a single 4.2-inch screen that adopts a fully transmissive Thin Film Transistor (TFT) liquid crystal display that reduces reflections & glare
• white or black backgrounds can be selected
• auto brightness adjustment based on available ambient light
• 2-modes are available street & track
• street display mode functions include; speedo, bar style tach, odometer, dual trip meters, gear position, intake air temp, coolant temp, instant & average fuel efficiency, clock, fuel consumed, fuel trip meter (appears when fuel switches to reverse - 3 litres remaining), peak rpm indicator, front brake pressure indicator, acceleration indicator, lap timer, ERS indicator & selected YRC setting info
• track mode functions include; race tach setting (tach starts at 8,000 rpm), lap number, lap timer (up to 40 laps), stop watch, gear position, speed & most of the above street displays including YRC setting info

• system must recognize the "coded ignition key" in order for the unit to start
• if the immobilizer ignition does not recognize the key, the ignition system & starter will not function, even if the ignition is forced into the on position