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.

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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