Suzuki DR 750 S Big (1989)

The Suzuki DR 750S Big is a motorcycle model that was produced in 1989. Its engine is a four-stroke, single cylinder, SOHC with 727 cc capacity, a compression ratio of 9.5:1, and air/oil cooled. The bike has electronic ignition, electric starting, and a clutch that is wet, multi-plate. The transmission is five-speed, with a final reduction ratio of 3.200, and the bike has a chain final drive. The front suspension consists of 38mm telescopic, coil spring, air-damped forks with 240mm wheel travel, while the rear suspension is a full floater rising-rate monoshock with adjustable preload and 220mm wheel travel. The front brakes have a single 280mm disc, 2 piston caliper, while the rear brakes are a 160mm drum. The bike has a fuel capacity of 29 liters and gets an average fuel consumption of 5.9 L/100 km. The Suzuki DR 750S Big has a top speed of 168.1 km/h and can go from 0-60 km/h in 14.3 m. It has a dry weight of 175 kg and a wet weight of 195 kg. The bike has a 1/4 mile time of 13.6 seconds and is capable of achieving 151.2 km/h. A road test by Motosprint Group was conducted in 1989.

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Technical specifications:

Make Model: Suzuki DR 750S Big

Year: 1989

Engine: Four stroke, single cylinder, SOHC, 4 vaves

Capacity: 727 cc / 44.4 cu in

Bore x Stroke: 9.5:1

Compression Ratio: 105 x 84 mm

Cooling System: Air/oil cooled

Lubrication System: Wet sump

Induction: 33 mm Mikuni BST 33 SS carburetors

Ignition: Electronic, Suzuki PEI

Starting: Electric

Battery: 12V 50.4kC, 14Ah

Spark Plug: NGK DPR9EA-9

Max Power: 37 kW / 50 hp @ 6800 rpm (rear tyre: 34.1 kW / 45.7 hp/6500 rpm )

Max Torque: 55 Nm / 5.6 kgf-m / 40.6 lb-ft @ 5600 rpm

Clutch: Wet, multi-plate

Transmission: 5 Speed

Primary Reduction Ratio: 1.937 (62/32)

Gear Ratios: 1 st 2.461 (32/13) / 2nd 1.578 (30/19) 3rd 1200 (24/20) / 4th 0.956 (22/23) / 5th 0.800 (20/25)

Final Reduction Ratio: 3.200 (48/15)

Final Drive: Chain, DAIDO DID520VL2, 116 links

Front Suspension: 38mm Telescopic, coil spring, air damped

Front Wheel Travel: 240 mm / 9.4 in

Rear Suspension: Full floater rising-rate monoshock with adjustable preload.

Rear Wheel Travel: 220 mm / 8.7 in

Front Brakes: Single 280 mm disc, 2 piston caliper

Rear Brakes: 160 mm Drum

Front Tyre: 90/90-21 54S

Rear Tyre: 130/80-17 65S

Caster: 39 degrees

Trail: 138 mm / 5.4 in

Steering Angle: 43 degrees

Turning Radius: 2.3 m / 7.5 ft

Dimension: Length: 2270 mm / 89.4 inWidth: 925 mm / 36.4 in Height: 1310 mm / 51.6 in

Wheelbase: 1505 mm / 59.3 in

Ground Clearance: 262 mm / 10.3 in

Seat Height: 876 mm / 34.5 in

Dry Weight: 175 kg / 389 lbs

Wet Weight: 195 kg / 430 lbs

Fuel Capacity: 29 Litres / 7.7 US gal / 6.4 Imp gal

Consumption Average: 5.9 L/100 km / 17 km/l / 40 US mpg / 48 Imp mpg

Braking 60 km/h – 0: 14.3 m / 46.9 ft

Braking 100 km/h – 0: 42.0 m / 137.8 ft

Standing 1/4 Mile: 13.6 sec / 151.2 km/h / 94 mph

Top Speed: 168.1 km/h / 104.5 mph

Road Test: Motosprint Group Test 1989