Yamaha SR500SP (1976-77)
The Yamaha SR500SP motorcycle was produced from 1976-77 and featured a four-stroke, single cylinder, SOHC engine with air cooling and a 499 cc capacity. It had a compression ratio of 9.0:1 and a 34mm Mikuni carburetor. The bike was kick-started and produced a max power of 31.5 hp and max torque of 36.3 Nm. The transmission was a 5-speed with a final drive chain. The frame was half-duplex cradle with 35mm telescopic forks for the front suspension and dual shock, 5-way adjustable spring preload for the rear suspension. The bike had a 200mm disc front brake and a 150mm drum rear brake, with a front tyre of 3.50 S19 and a rear tyre of 4.00 S18. It had a width of 845mm, height of 1155mm, and a wheelbase of 1405mm. The seat height was 810mm and the dry weight was 158kg while the wet weight was 173kg. It had a fuel capacity of 12 litres and consumed an average of 63 mpg. It had a standing quarter-mile of 15.3 seconds and a top speed of 95 mph.
Technical specifications:
Make Model: Yamaha SR 500
Year: 1976 – 77
Engine: Four stroke, single cylinder, SOHC, 2 valves per cylinder.
Capacity: 499 cc / 30.4 cu-in
Bore x Stroke: 87 84 mm
Cooling System: Air cooled
Compression Ratio: 9.0:1
Oil Capacity: 2.4 Litres
Induction: 34mm Mikuni VM34SS carburetor
Ignition: CDI
Starting: Kick
Max Power: 31.5 hp / 23.5 kW @ 6500 rpm
Max Torque: 36.3 Nm / 26.8 lb-ft @ 5500 rpm
Transmission: 5 Speed
Final Drive: Chain
Frame: Half-duplex cradle
Front Suspension: 35mm telescopic forks
Front Wheel Travel: 150 mm / 5.9 in
Rear Suspension: Dual shock, 5-way adjustable spring preload.
Rear Wheel Travel: 105 mm / 4.1 in
Front Brakes: Single 200mm disc
Rear Brakes: 150mm drum
Front Tyre: 3.50 S19
Rear Tyre: 4.00 S18
Rake: 27.5 degrees
Trail: 117 mm / 4.6 in
Dimensions: Width 845 mm / 33.3 in Height 1155 mm / 45.5 in
Wheelbase: 1405 mm / 55.3 in
Seat Height: 810 mm / 32 in
Dry Weight: 158 kg / 348 lbs
Wet Weight: 173 kg / 381.4 lbs
Fuel Capacity: 12 Litres / 3.1 US gal
Consumption Average: 63 mpg
Standing 1/4 Mile: 15.3 sec
Top Speed: 95 mph / 152.8 km/h
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