technical specification » Motosport

Honda CBR250R Specs and Engine Technical Features

jess — Wed, 22 Apr 2009 08:03:48 +0000

The Honda CBR250 is equipped with a water cooled inline 4 cylinder engine. The engine is inclined forward 35°. This inclination enables an improved straight intake manifold port, which allows smooth flow of air-fuel mixture gas. The gear drive system was applied to the cam shaft instead of chain drive system. The gear system is optimized for high speed operation. In order to provide smooth valve operation at high speed, the engine has lower shim design. Also, carbon hardened connecting rods used to reduce friction loss.

The following table outlines detail information about Honda CBR250R Specs, including engine specs, transmission specs, fuel system, steering, brake system, etc.

Honda CBR250R Dimension Specs

Overall length	2,000 mm
Overall width	685 mm
Overall height	1,120 mm
Wheel-base	1,370 mm

Honda CBR250R Engine Specs

Total displacement	0.249 litres
Engine type	Petrol 4 stroke
Cylinders	2 abreast
Engine configuration	Inline 4 cylinder
Valve operation	DOHC
Bore x stroke	48.5 mm x 33.8 mm
Compression ratio	11.0
Compression pressure	13.0 kg/cm2 at 400 rpm
Maximum output	45 PS at 14,500 rpm
Maximum torque	2.5 kg-m at 10,500 rpm
Valve operation time: Intake open Valve close Exhaust open Valve close	. 10° BTDC (1mm lifted) 40° ABDC (1mm lifted) 30° BBDC (1mm lifted) 10° BTDC (1mm lifted)
Valve clearance in	0.16 mm (cold)
Valve clearance out	0.23 mm (cold)
Idle speed	1,500 rpm
Lubrication	Forced pressure
Oil filter	Total flow
Oil pump	Trochoid rotor
Oil capacity	2.7 liter
Cooling system	Liquid cooled

Honda CBR250R Fuel System Specs

Air filter type	Viscous paper
Fuel capacity	14.0 liter
Carburetor type	VG01
Carburetor piston size	28 mm
Venturi diameter	25 mm
Ignition timing	20° BTDC at 1,500 rpm
Spark plug	NGk C8EH 9/ ND U24FE 9
Spark plug gap	0.8 – 0.9 mm
Battery	12V 8AH
Clutch type	Multi – wet plate
Clutch operation	Mechanical

Honda CBR250R Transmission System Specs

Transmission type	Constant mesh
Primary reduction ratio	2.966
Gear ratio: 1st 2nd 3rd 4th 5th 6th	. 2.733 2.000 1.590 1.333 1.153 1,035
Gear type	Chain
Gear reduction ratio	3.071
Front brake	Hydraulic disc
Rear brake	Hydraulic disc
Front wheel suspension	Telescopic fork
Rear wheel suspension	Swing arm diamond

Source: Honda CBR250R Workshop Manual

2009 Yamaha YZF-R125 Specs and Features

jess — Fri, 13 Feb 2009 16:31:47 +0000

The 2009 Yamaha YZF-R125 is powered by a 125cc liquid-cooled, 4-stroke, single cylinder, 4-valve, SOHC engine, producing 11.0 kW (15 PS) @ 9,000 rpm, and torque up to 12.24 Nm (1.25 kg-m) @ 8,000 rpm. The YZF-R125 features a Deltabox frame and aluminium swinging arm for outstanding handling performance, and lightweight 5-spoke wheels help to minimize unsprung weight to give impressive roadholding.

The following table contains technical specification of 2009 YZF-R125. Here you will find detail engine specs, chassis, transmission system, clutch, dimension, etc.

YZF-R125 Engine Specs

Engine type	Liquid-cooled, 4-stroke, single cylinder, 4-valve, SOHC
Displacement	124.66 cc
Bore x stroke	52.0 x 58.6 mm
Compression ratio	11.2 : 1
Maximum power	11.0 kW (15 PS) @ 9,000 rpm
Maximum torque	12.24 Nm (1.25 kg-m) @ 8,000 rpm
Lubrication system	Wet sump
Fuel System	Fuel injection
Clutch type	Wet, multiple-disc coil spring
Ignition system	TCI
Starter system	Electric
Transmission system	Constant mesh, 6-speed
Final transmission	Chain
Fuel tank capacity	13.8 L
Oil tank capacity	1.15 L

YZF-R125 Chassis Specs

Chassis	Steel Deltabox
Front suspension system	Telescopic forks
Front travel	130 mm
Rear suspension system	Swingarm (monocross)
Rear travel	125 mm
Caster angle	24.2°
Trail	86.1 mm
Front brake	Single disc, Ø 292 mm
Rear brake	Single disc, Ø 230 mm
Front tyre	100/80-17 M/C
Rear tyre	130/70-17 M/C

YZF-R125 Dimension Specs

Length	2,015 mm
Width	660
Height	970 mm
Seat height	818 mm
Wheel base	1,355 mm
Minimum ground clearance	155 mm
Wet weight	138 kg

Source: yamaha-motor-europe.com

2009 Yamaha YZF-R6 Specs and Features

jess — Fri, 13 Feb 2009 16:07:46 +0000

The 2009 Yamaha YZF-R6 mounted with 599 cc liquid cooled, 4-stroke, forward-inclined parallel 4-cylinder, 16-valves, D0HC, generating maximum power 94.9 kW (129 PS) @ 14,500 rpm and torque 65.8 Nm (6.7 kg-m) @ 11,000 rpm. The 2009 YZF-R6 features slipper clutch, with advanced aluminum chassis and 13:1 compression ratio. The YZF-R6 also equipped with YCC-T chip-controlled ‘fly-by-wire’ throttle delivers the ultimate acceleration, and Yamaha’s unique YCC-I electronically-controlled variable intake funnels make for higher levels of power and stronger torque.

The following table provides detail technical specs of 2009 YZF-R6. Here you will find detail information about its engine, chassis, transmission system, dimension, etc.

YZF-R6 Engine Specs

Engine type	Liquid cooled, 4-stroke, forward-inclined parallel 4-cylinder, 16-valves, D0HC
Displacement	599 cc
Bore x stroke	67.0 x 42.5 mm
Compression ratio	13.1 : 1
Maximum power	94.9 kW (129 PS) @ 14,500 rpm
Maximum torque	65.8 Nm (6.7 kg-m) @ 11,000 rpm
Lubrication system	Wet sump
Fuel System	Fuel injection
Clutch type	Wet, multiple-disc coil spring
Ignition system	TCI
Starter system	Electric
Transmission system	Constant mesh, 6-speed
Final transmission	Chain
Fuel tank capacity	17.3 L
Oil tank capacity	3.4 L

YZF-R6 Chassis Specs

Chassis	Aluminium die-cast Deltabox
Front suspension system	Telescopic forks, Ø 41 mm
Front travel	115 mm
Rear suspension system	Swingarm (link suspension)
Rear travel	120 mm
Caster angle	24º
Trail	97 mm
Front brake	Dual discs, Ø 310 mm
Rear brake	Single disc, Ø 220 mm
Front tyre	120/70 ZR17M/C (58W)
Rear tyre	180/55 ZR17M/C (73W)

YZF-R6 Dimension Specs

Length	2,040 mm
Width	705 mm
Height	1,100 mm
Seat height	850 mm
Wheel base	1,380 mm
Minimum ground clearance	130 mm
Wet weight	185 kg

2009 Yamaha YZF-R1 Engine Specs and Features

jess — Fri, 13 Feb 2009 15:38:38 +0000

The 2009 Yamaha YZF-R1 is powered by all-new 998cc liquid cooled 4-stroke, DOHC, inline four-cylinder engine, producing 182 PS at 12,500 rpm with 115.5 Nm of torque at 10,000 rpm. Featuring also uneven firing interval for ultimate traction (270º – 180º – 90º – 180º), new lightweight Deltabox frame, YCC-T and YCC-I for optimal performance. The new designed is claimed by Yamaha to be superb throttle linearity, giving a feeling that the rider’s throttle hand is directly connected to the rear tyre.

The following table outlines detail technical specification of the 2009 Yamaha YZ-R1. Here you will find detail of engine, transmission system, suspension, chassis and electrical system specs of the supersport.

YSF-R1 Engine Specs

Engine type	Liquid-cooled, 4-stroke, forward-inclined parallel 4-cylinder, 4-valves, DOHC
Displacement	998 cc
Bore x stroke	78.0 x 52.2 mm
Compression ratio	12.7 : 1
Maximum power	133.9 kW (182 PS) @ 12,500 rpm (without air-induction)
Maximum torque	115.5 Nm (11.8 kg-m) @ 10,000 rpm
Lubrication system	Wet sump
Fuel System	Fuel injection
Clutch type (model)	Wet, multiple-disc coil spring (MIKUNI 45EIDW/1)
Ignition system	TCI
Starter system	Electric
Transmission system	Constant mesh, 6-speed
1st gear ratio	38/15 (2.533)
2nd gear ratio	33/16 (2.063)
3rd gear ratio	37/21 (1.762)
4th gear ratio	35/23 (1.522)
5th gear ratio	30/22 (1.364)
6th gear ratio	33/26 (1.269)
Final transmission	Chain
Fuel tank capacity	18 L
Oil tank capacity	3.73 L
Spark plug model (gap)	NGK/CR9EK (0.6–0.7 mm)

YZF-R1 Chassis Specs

Chassis	Aluminium Deltabox
Frame type	Diamond
Caster angle	24.00 degree
Trail	102.0 mm (4.02 in)
Front suspension system	Telescopic forks, Ø 43 mm
Front travel	120 mm
Rear suspension system	Swingarm
Rear travel	120 mm
Caster angle	24º
Trail	102 mm
Front brake	Dual discs, Ø 310 mm
Rear brake	Single disc, Ø 220 mm
Front tyre	Tubeless, 120/70 ZR17M/C (58W)
Rear tyre	Tubeless, 190/55 ZR17M/C (75W)

YZF-R1 Dimension Specs

Length	2,070 mm
Width	715 mm
Height	1,130 mm
Seat height	835 mm
Wheel base	1,415 mm
Minimum ground clearance	135 mm
Wet weight	206 kg

(source: yamaha-motor-europe.com)

1997 Kawasaki Ninja ZX250-C6 Specs

jess — Mon, 02 Feb 2009 16:00:53 +0000

The Kawasaki Ninja 250R is a street motorcycle sold by the Kawasaki Motors since 1983. It is Kawasaki’s best-selling motorcycle, experiencing steady double-digit sales growth year after year. In the United States, it is known as EX-250E/F/G/H series. While outside the U.S. it is known as the ZZR-250, ZX-250, or as the GPX-250R.

The following technical specification outlines detail information about 1997 Kawasaki Ninja ZX250 C6 series. Find the specific information about ZX250′s dimensions, engine specs, performance, drive train and transmission system, frames and electrical specs.

Dimension: Overall length Overall width Overall height Wheelbase Road clearance Seat height Dry weight Curb weight (Front/Rear) Fuel tank capacity	. 2,000 mm 685 mm 1,090 mm 1,360 mm 130 mm 735 mm 141 mm 82/72 kg 15.0 litre
Performance: Minimum turning radius	. 2.9 m
Engine: Type Cooling System Bore x stroke Displacement Compression ratio Maximum horsepower Maximum torque Carburetion system Starting system Ignition system Timing advance Ignition timing . Spark plug Cylinder numbering method Firing order Lubrication system Engine oil capacity Engine oil grade	. 4-stroke, DOHC, 4-cylinder Liquid-cooled 49.0 x 33.1 mm 249 mL 12 : 2 33.08 kW (45 PS) @ 16,000 rpm 25.49 Nm @ 11,500 rpm KEIHIN CVK D30 x 4 Electric Starter Battery and coil (transistorized) Electronically advanced (digital) From 23° BTDC at 1,500 rpm to 50° BTDC at 6,000 rpm NGK CR9E Left to right 1 2 3 4 1 2 3 4 Forced lubrication (wet sump) 2.6 liter SE, SF, or SG Glas
Drive Train: Primary reduction type Primary reduction ratio Clutch type Transmission type Gear ratio 1 Gear ratio 2 Gear ratio 3 Gear ratio 4 Gear ratio 5 Gear ratio 6 Final drive type Final drive reduction ratio	. Gear 79/24 Wet multi disc 6-speed constant mesh, return shift 39/15 34/19 31/22 29/25 27/27 25/28 Chain drive 48/14
Frame: Frame type Caster (rake angle) Trail Front tire (type/size) Rear tire (type/size) Front suspension type Rear suspension type Brake type (front/rear)	. Press, diamond 23.5° 84 mm Tubeless – 110/70-R17 54H Tubeless – 140/60-R18 64H Telescopic fork Swing arm unitrak Dual disc/single disc

You can find also the 1997 Kawasaki Ninja ZX250 Workshop Manual and ZX250 Electrical System.

KTM 1190 RC8 Specs (2008)

jess — Thu, 27 Nov 2008 05:03:04 +0000

KTM 1190 RC8 Superbike has 2-cylinder, 4-stroke, V75° engine with total displacement reach 1148cc and a maximum of 155 PS at 9500 rpm, a torque of 125 Nm and weighing only 62 kg, the latest LC8 engine generation is the ideal source of power for a Superbike. With the LC8 platform is any indication, the RC8 will benefit from a bounty of torque and magnificent mid-range – characteristics. A massive 125 Nm torque, 155 hp top performance, 198 kg in weight with a full tank: Spectacular benchmark data, that together with the unique riding feeling, makes the 1190 RC8 not only a potential Superbike but above all, also a real KTM. Find more information about KTM 1190 RC8 Specification in the following table.

ENGINE

Engine type	2-cylinder, 4-stroke, V 75°
Displacement	1148 cc
Bore x stroke	103 x 69 mm (4.06 x 2.72″)
Performance (homologated)	113.8 kW @ 10000 rpm
Max. torque	120 Nm @ 8000 rpm
Compression ratio	12.5:1
Starter/Battery	Electric Starter/12 V 11.2 Ah
Transmission	6 gears, dog clutch engagement
Fuel Mixture Generation	Keihin EFI (throttle body 52 mm (2.05″))
Control	4 V/DOHC
Lubrication	Pressure lubrication with 2 Eaton pumps
Engine lubrication	Motorex, fully synthetic, SAE 10W-50
Primary ratio	40:76
Final drive	17:37
Cooling	Liquid cooled
Clutch	Wet multi-disc clutch, operated hydraulically
Motor management	Keihin EMS

CHASSIS

Frame	Chromium-Molybdenum trellis frame, powder-coated
Subframe	Aluminium 7020
Handlebar	Aluminium stump handlebar
Front Suspension	WP-USD Ø 43 mm
Rear Suspension	WP-Monoshock
Suspension travel front/rear	120/125 mm (4.7/4.9″)
Front brake	2 x Brembo four piston, radially bolted caliper, brake disc 320 mm (12.6″)
Rear brake	Brembo two piston, fixed caliper, brake disc 220 mm (8.66″)
Rims, front/rear	Cast aluminium wheels 3.5 x 17″; 6 x 17″
Tires, front/rear	120/70 ZR 17; 190/55 ZR 17
Chain	X-ring 5/8 x 5/16″
Main Silencer	Stainless steel underfloor silencer with regulated catalytic converter
Battery	12 V / 11.2 Ah
Steering head angle	66.7°
Trail	90/92 mm (3.54 / 3.62″)
Wheel base	1430 mm (56.30″)
Ground clearance (unloaded)	110 mm (4.33″)
Seat height	805/825 mm (31.69/32.48″)
Tank capacity	approx. 16.5 liters/3.5 liters reserve (4.36/0.92 gal)
Weight (ready to race)	approx. 184 kg (405.6 lbs)

Suzuki GS500F Specs (2008)

jess — Tue, 11 Nov 2008 13:17:03 +0000

The Suzuki GS500F’s sports full fairing has expanded the horizons of Suzuki’s already great all-rounder GS500. Having 487cc, DOHC, parallel-twin engine with compact and low-maintenance design, GS500F was built to produce useful accessible power over broad rpm range. The Suzuki Pulsed-secondary AIR-injection (PAIR) system effectively keeps emissions low. Find more information of Suzuki GS500F specification in the following table.

Engine Type	4-stroke, 2-cylinder, air-cooled, DOHC
Engine Displacement	487 cm3 (cc)
Bore x Stroke	74.0 mm x 56.6 mm
Compression Ratio	9.0 : 1
Transmission	6-speed constant mesh
Overall Length	2,080 mm (81.9 in.)
Overall Width	800 mm (31.5 in.)
Overall Height	1,150 mm (45.3 in.)
Wheelbase	1,405 mm (55.3 in.)
Ground Clearance	120 mm ( 4.7 in.)
Seat Height	790 mm (31.1 in.)
Curb Mass	199 kg (439 lbs.)
Suspension, Front	Telescopic, coil spring, oil damped
Suspension, Rear	Link type, coil spring, oil damped
Brake, Front	Disc
Brake, Rear	Disc
Tires, Front	110/70-17M/C 54H, tubeless
Tires, Rear	130/70-17M/C 62H, tubeless
Ignition Type	Electronic ignition (Transistorized)
Fuel Tank	20.0 L (5.3 US gal.)
Color	Pearl Vigor Blue / Glass Splash White

Suzuki GSX650F Specs (2008)

jess — Tue, 11 Nov 2008 13:01:34 +0000

The Suzuki GSX 650 F is a sport touring motorcycle made by Suzuki. The broad power and refined response of its fuel-injected 4-cylinder engine. The dynamic look of a fully faired sportbike and all-day comfort.
The GSX650F – a modern incarnation of the classic 650cm3 motorcycle, with high style and high value. The 656 cc Liquid cooled engine has just over 80hp and a 12,500 rpm redline. The following tables provide detail information about the GSX650F specification.

Engine Type	4-stroke, 4-cylinder, liquid-cooled, DOHC
Engine Displacement	656 cm3 (cc)
Bore x Stroke	65.5 mm x 48.7 mm
Compression Ratio	11.5 : 1
Transmission	6-speed constant mesh
Overall Length	2,130 mm (83.9 in.)
Overall Width	760 mm (29.9 in.)
Overall Height	1,235 mm (48.6 in.)
Wheelbase	1,470 mm (57.9 in.)
Ground Clearance	125 mm ( 4.9 in.)
Seat Height	770 mm (30.3 in.)
Curb Mass	241 kg (531 lbs.)
Suspension, Front	Telescopic, coil spring, oil damped
Suspension, Rear	Link type, coil spring, oil damped
Brake, Front	Disc, twin
Brake, Rear	Disc
Tires, Front	120/70ZR17M/C (58W), tubeless
Tires, Rear	160/60ZR17M/C (69W), tubeless
Ignition Type	Electronic ignition (Transistorized)
Fuel Tank	19.0 L (5.0 US gal.)

Yamaha YZF-R1P(C) Specs (2002)

jess — Tue, 21 Oct 2008 09:27:06 +0000

Yamaha launched the YZF-R1 in 1998 after redesigning the Genesis engine to offset the crankshaft, gearbox input and output shafts and this “compacting” of the engine yielded a huge dividend in that the total engine length was now very short. This allowed the wheelbase to be shortened significantly which resulted in much quicker handling and an optimized center of gravity. The following specification applies for Yamaha YZF-R1P and YZF-R1PC 2002 models. Herein you will find detail information about the engine specs (engine type, cylinder arrangement, displacement, bore x stroke, compression ratio, etc), dimension, frame, drive train, wheel drive, tire and electrical system specs. Fire more information about the Yamaha YZF-R1P and YZF-R1PC 2002 in its service manual.

DIMENSION

Overall length	2,040 mm (80.3 in)
Overall width	705 mm (27.8 in)
Overall height	1,105 mm (43.5 in)
Seat height	820 mm (32.3 in)
Wheelbase	1,395 mm (54.9 in)
Minimum ground clearance	140 mm (5.5 in)
Minimum turning radius	3,900 mm (153.5 in)
Basic weight: Wet (with oil and a full fuel) Maximum load
Basic weight: Wet (with oil and a full fuel) Maximum load	193 kg (426 lb) USA, Canada 194 kg (428 lb) California 202 kg (445 lb) USA, Canada 201 kg (443 lb) California

ENGINE

Engine type	Liquid-cooled, 4-stroke, DOHC
Cylinder arrangement	Forward-inclined parallel 4-cylinder
Displacement	998 cm3 (60.9 cu.in)
Bore x stroke	74 × 58 mm (2.91 × 2.28 in)
Compression ratio	11.8 : 1
Engine idling speed	1,000 ~ 1,100 r/min
Vacuum pressure at engine idling speed	25.3 kPa (190 mmHg, 7.47 inHg)
Standard compression pressure (at sea level)	1,450 kPa (14.5 kg/cm², 210 psi) at 400 r/min
Fuel: Recommended fuel Fuel tank capacity Total Reserve only	Premium unleaded gasoline only 17 L (3.74 Imp gal, 4.49 US gal) 3.3 L (0.73 Imp gal, 0.87 US gal)
Lubrication system	Wet sump
Recommended oil	Yamalube 4 (20W40) or SAE 20W40 type SE motor oil (5 °C (40 °F) or higher) Yamalube 4 (10W30) or SAE 10W30 type SE motor oil (15 °C (60 °F) or below)
Engine oil quantity: Total amount Without oil filter cartridge replacement. With oil filter cartridge replacement. Oil pressure (hot) Relief valve opening pressure	3.8 L (3.34 Imp qt, 4.02 US qt) 2.9 L (2.55 Imp qt, 3.07 US qt) 3.1 L (2.73 Imp qt, 3.28 US qt) 45 kPa at 1,100 r/min 480 ~ 560 kPa
Oil filter: Oil filter type Bypass valve opening pressure.	Cartridge (paper) 80 ~ 120 kPa
Oil pump: Oil pump type Inner-rotor-to-outer-rotor- tip clearance. Outer-rotor-to-oil-pump- housing clearance.	Trochoid 0.01 ~ 0.10 mm (0.0004 ~ 0.0039 in) 0.09 ~ 0.15 mm (0.0035 ~ 0.0059 in)

COOLING SYSTEM & IGNITION SYSTEM

Radiator capacity	2.45 L (2.16 Imp qt, 2.59 US qt)
Radiator cap opening pressure	95 ~ 125 kPa (0.95 ~ 1.25 kg/cm2, 13.8 ~ 18.1 psi)
Radiator core: Width Height Depth	340 mm (13.4 in) 295.8 mm (11.6 in) 27 mm (1.06 in)
Coolant reservoir capacity	0.24 L (0.21 Imp qt, 0.25 US qt)
Water pump Water pump type Reduction ratio	Single suction centrifugal pump 68/43 × 28/28 (1.581)
Starting system type	Electric starter
Electric fuel injection: Type Manufacturer	INP-731/4 NIPPON INJECTOR
Spark plugs: Model (manufacturer) Quantity Spark plug gap	CR9EIA 9/IU24D (NGK/DENSO) 4 0.8 ~ 0.9 mm (0.032 ~ 0.035 in)

CLUTCH

Clutch type	Wet, multiple disc
Clutch release method	Outer pull, rack and pinion pull
Clutch release method operation	Cable operation
Operation	Left-hand operation
Clutch cable free play (at the end of the clutch lever)	10 ~ 15 mm (0.4 ~ 0.6 in)
Friction plates: Thickness Plate quantity Clutch plates: Thickness Plate quantity Clutch springs: Free length Spring quantity	2.9 ~ 3.1 mm (0.114 ~ 0.122 in) 8 1.9 ~ 2.1 mm (0.075 ~ 0.083 in) 7 6.5 mm (0.26 in) 1

TRANSMISSION and FRAME

Transmission type	Constant mesh, 6-speed
Primary reduction system	Spur gear
Primary reduction ratio	68/43 (1.581)
Secondary reduction system	Chain drive
Secondary reduction ratio	43/16 (2.688)
Operation	Left foot operation
Gear ratio: 1st 2nd 3rd 4th 5th 6th	35/14 (2.500) 35/19 (1.842) 30/20 (1.500) 28/21 (1.333) 30/25 (1.200) 29/26 (1.115)
Frame type	Diamond
Caster angle	24°
Trail	103 mm (4.06 in)

TIRE, SUSPENSION and BRAKE

Tire type	Tubeless
Tire size: Front Rear	120/70 ZR17 (58W) 190/55 ZR17 M/C (73W)
Brake type: Front Operation Diameter x thickness Rear Operation Diameter x thickness	Dual disc Right hand operation 298 × 5 mm (11.73 × 0.20 in) Single-disc Right foot operation 220 × 5 mm (8.66 × 0.20 in)
Suspension: Front Rear	Telescopic fork Swingarm (link suspension)
Shock absorber: Front Rear	Coil spring/ Oil damper Coil spring/ Gas-oil damper
Wheel type	Cast wheel
Wheel travel: Front Rear	300 mm (11.8 in) 315 mm (12.4 in)

ELECTRICAL

System voltage	12 V
Ignition system: Type Ignition timing Ignition coil: Model (manufacturer) Minimum ignition spark gap Primary coil resistance Secondary coil resistance	Transistorized coil ignition (digital) 5° BTDC at 1,050 r/min F6T558 (MITSUBISHI) 6 mm (0.24 in) 1.19 ~ 1.61 ? at 20 °C (68 °F) 8.5 ~ 11.5 k? at 20 °C (68 °F)
Charging system: System type Model (manufacturer) Normal output Stator coil resistance/color	AC magneto F4T471 (MITSUBISHI) 14 V/32 A at 5,000 r/min 0.19 ~ 0.23 ? at 20 °C (68 °F)/W–W
Rectifier/regulator: Regulator type Model (manufacturer) No-load regulated voltage Rectifier capacity Withstand voltage	Semi conductor short circuit FH001 (SHINDENGEN) 14.1 ~ 14.9 V 35 A 200 V
Battery: Battery type Battery voltage/capacity Specific gravity Manufacturer Ten hour rate amperage	GT12B-4 12 V/10 AH 1.320 GS 1 A
Headlight type	Halogen bulb
Bulb (voltage/wattage × quantity): Headlight Auxiliary light Tail/brake light	12 V 60 W/55 W × 2 12 V 5 W × 2 12 V 4 W/0.5 W (LED)
Electric starting system: System type Starter motor Model (manufacturer) Power output Overall length brushes Spring force Armature coil resistance Commutator diameter Mica undercut	Constant mesh 5JJ (YAMAHA) 0.9 kW 10.8 mm (0.43 in) 5.28 ~ 7.92 N 0.009 ~ 0.011 ? at 20 °C (68 °F) 24.5 mm (0.96 in) 1.5 mm (0.06 in)

Yamaha YZF-R7 Specs (1999)

jess — Mon, 20 Oct 2008 14:18:40 +0000

The Yamaha YZF-R7′s chunky frame screams ‘racer’, and there’s Ohlins forks and rear shock too. Ride it and it’s as good as you’d hope. Reassuring stability is combined with phenomenal precision that belies regular bikes. Ditto brakes.

The following technical specification applies for Yamaha YZF-R7 1999 models. Herein you will find detail information about the sport bike’s engine system (displacement bore x stroke, displacement, compression ration), transmission, dimension, electrical components specs, etc. (source: Yamaha YZF-R7 1999 Service Manual)

DIMENSION

Overall length	2,060 mm (81.1 in)
Overall width	720 mm (28.3 in)
Overall height	1,125 mm (44.3 in)
Seat height	840 mm (33.1 in)
Wheelbase	1,400 mm (55.1 in)
Minimum ground clearance	120 mm (4.72 in)
Minimum turning radius	3,800 mm (150 in)
Weight: Wet (with oil and full tank) Dry (without oil and fuel) Maximum load allowed	207 kg (456 lb) 176 kg (388 lb) 317 kg (699 lb)

ENGINE

Engine type	Liquid-cooled, 4-stroke, DOHC
Cylinder arrangement	Forward-inclined parallel 4-cylinder
Displacement	749 cm³
Bore x stroke	72 x 46 mm
Compression ratio	11.4:1
Engine idling speed	1,000 ~ 1,200 r/min
Vacuum pressure at engine idling speed	15.8 ~ 18.4 kPa
Compression pressure (STD)	157 kPa (1.57 kgf//cm², 22.3 psi) at 500 rpm
Fuel: Recommended fuel Fuel tank capacity Total (including reserve) Reserve only	Premium unleaded gasoline 23 L (20.2 Imp qt, 24.3 US qt) 4.8 L (4.22 Imp qt, 5.07 US qt)

OIL

Lubrication system	Wet sump
Recommended oil	Yamalube 4 (20W40) or SAE 20W40 type SE motor oil
Quantity Total amount Without oil filter cartridge replacement. With oil filter cartridge replacement.	3.6 L (3.2 Imp qt, 3.8 US qt) 2.6 L (2.3 Imp qt, 2.7 US qt) 2.8 L (2.5 Imp qt, 3.0 US qt)
Oil pressure (hot)	40 kPa (0.4 kgf/cm², 5.69 psi) at 1,100 rpm
Relief valve opening pressure	480 ~ 560 kPa (4.8 ~ 5.6 kgf/cm², 68.3~79.7 psi)
Oil filter Oil filter type Bypass valve opening pressure.	Cartridge (paper) 180 ~ 220 kPa (1.8 ~ 2.2 kgf/cm², 25.6 ~ 31.3 psi)
Oil pump Oil pump type Inner-rotor-to-outer-rotor- tip clearance. Outer-rotor-to-oil-pump- housing clearance.	Trochoidal 0.09 ~ 0.15 mm (0.004 ~ 0.006 in) 0.03 ~ 0.08 mm (0.001 ~ 0.003 in)

COOLING SYSTEM

Radiator capacity	2.75 L (2.42 Imp qt, 2.91 US qt)
Radiator cap opening pressure	95 ~ 125 kPa (0.95 ~ 1.25 kgf/cm², 13.1 ~ 17.8 psi))
Upper radiator core width height depth Lower radiator core width height depth	414 mm (16.3 in) 248 mm (9.76 in) 24 mm (0.94 in) 211 mm (8.31 in) 158 mm (6.22 in) 24 mm (0.94 in)
Coolant reservoir capacity	0.6 L (0.53 Imp qt, 0.63 US qt)
Water pump Water pump type Reduction ratio	Single-suction centrifugal pump 88/47 x 28/25 (2.097)

STARTING SYSTEM

Type	Electric starter
Spark plugs Model (manufacturer) Quantity Spark plug gap	R0256R-10 (NGK) 4 0.7 ~ 0.8 mm (0.028 ~ 0.031 in)

TRANSMISSION and FRAME

Transmission type	Constant mesh, 6-speed
Primary reduction system	Spur gear
Primary reduction ratio	88/47 (1.872)
Secondary reduction system	Chain drive
Secondary reduction ratio	43/17 (2.529)
Operation	Left foot operation
Gear ratio: 1st 2nd 3rd 4th 5th 6th	38/17 (2.235) 36/19 (1.895) 35/21 (1.667) 33/23 (1.435) 31/24 (1.292) 27/23 (1.174)
Frame type	Diamond
Caster angle	22.7°
Trail	95 mm (3.74 in)

TIRE, SUSPENSION and BRAKE

Tire type	Tubeless
Tire size: Front Rear	120/70 ZR17 (58W) 180/55 ZR17 73W
Brake type: Front Diameter x thickness Rear Diameter x thickness	Dual-disc 320 x 5 mm (12.6 x 0.20 in) Single-disc 245 x 5 mm (9.65 x 0.20 in)
Suspension: Front Rear	Telescopic fork Swingarm (link suspension)
Shock absorber: Front Rear	Coil spring/ Oil damper Coil spring/ Gas-oil damper
Wheel type	Cast wheel
Wheel travel: Front Rear	120 mm (4.7 in) 138 mm (5.43 in)

ELECTRICAL

System voltage	12 V
Ignition system	C.D.I.
Ignition timing	5° BTDC at 1,100 r/min
Advanced timing	55° BTDC at 5,000 r/min
Advancer type	Throttle position sensor and electrical
Pickup coil resistance/color	421 ~ 569 Ohm / Gy–B
C.D.I unit Manufacturer	F8T19371 (MITSUBISHI)
Ignition coils: Model (manufacturer) Minimum ignition spark gap Primary coil resistance Secondary coil resistance	F6T549 (MITSUBISHI) 6 mm (0.24 in) 0.16 ~ 0.21 Ohm 5.0 ~ 6.8 kOhm
Charging system	AC magneto
Battery type	GT9B-4
Battery capacity	12V / 8AH
Headlight type	Halogen bulb
Bulb (voltage/wattage x quantity): Headlight Auxiliary light Tail/brake light Turn signal light Meter light	R. 12 V 60 W x 1 / L. 12 V 51 W x 1 2 12 V 5 W x 2 12 V 5 W / 21 W x 1 12 V 21 W x 4 12 V 1.4 W x 2
Fuses (amperage x quantity): Main fuse Headlight fuse Signaling system fuse EFI fuse ECU fuse Radiator fan fuse Backup fuse (odometer)	30 A x 1 20 A x 1 20 A x 1 20 A x 1 7.5 A x 1 7.5 A x 1 7.5 A x 1