Velocette Venom Thruxton

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Velocette Venom Thruxton
Manufacturer
Production 1965 - 70
Class Classic
Engine
Four stroke, single cylinder, OHV
Compression ratio 9.0:1
Top Speed 193 km/h / 120 mph
Horsepower 41.04 HP (30.6 KW) @ 6200RPM
Fuel System Amal 5GP2 Carburetor
Ignition Miller D6 with auto volt regulation
Spark Plug KLG FE220 / NGK B9ES
Battery 6V, 60W
Transmission 4 Speed constant mesh, close ratio
Frame Single down-tube and twin bottom rails
Suspension Front: Telescopic fork with hydraulic damping and an offset wheel spindle
Rear: Woodhead-Monroe springs with hydraulic damping, later Armstrong and Girling, adjustable
Brakes Front: 7.5 x 1.5 in drum
Rear: 7 x 1 in drum
Front Tire 3.00-19
Rear Tire 3.50-19
Wheelbase 1365 mm / 53.75 in
Length 83.9 inches (2131 mm)
Width 27.6 inches (701 mm)
Seat Height 775 mm / 30.5 in
Weight 170 kg / 375 lbs (dry),
Fuel Capacity 19.3 L / 5.1 US gal
Fuel Consumption 3.9 L/100 km / 25.5 km/L / 60 US mpg
Manuals Service Manual

The Velocette VENOM THRUXTON was a Single Cylinder, Four Stroke Classic motorcycle produced by Velocette in 1965. Claimed horsepower was 41.04 HP (30.6 KW) @ 6200 RPM. It could reach a top speed of 193 km/h / 120 mph.

Engine

The engine was an Air cooled cooled Four stroke, single cylinder, OHV. The engine featured a 9.0:1 compression ratio.

Drive

Power was moderated via the Dry, three-plate.

Chassis

It came with a 3.00 x 19 in, ribbed front tire and a 3.50 x 19 in, studded rear tire. Stopping was achieved via 7.5 x 1.5 in drum in the front and a 7 x 1 in drum in the rear. The front suspension was a Telescopic fork with hydraulic damping and an offset wheel spindle while the rear was equipped with a Woodhead-Monroe springs with hydraulic damping, later Armstrong and Girling, adjustable. The Venom Thruxton was fitted with a 19.3 L / 5.1 US gal fuel tank. The bike weighed just 170 kg / 375 lbs. The wheelbase was 1365 mm / 53.75 in long.


1965 - 1970 Velocette VENOM THRUXTON

The following year this went into production as the Velocette Thruxton. Also known as the Venom Thruxton, this aimed to fill the gap left by the demise of the BSA Gold Star and was named after the Thruxton Circuit race track on a former wartime airfield in Hampshire. The Velocette Thruxton was a true racer, with a full race specification cylinder head that was gas flowed by hand to accommodate extra-large valves and a downdraught inlet port. The Amal carburetor was so large it required a distinctive cutaway in the bottom of the fuel tank, and race cams boosted performance to up to 120 mph (190 km/h).

Photos

Specifications

Make Model Velocette Venom Thruxton
Year 1965 - 70
Engine Type Four stroke, single cylinder, OHV
Displacement 499 cc / 30.5 cub in
Bore X Stroke 86 x 86 mm
Compression 9.0:1
Cooling System Air cooled
Lubrication Dry sump
Carburetor Amal 5GP2 carburetor
Exhaust Single, megaphone
Spark Plug KLG FE220 / NGK B9ES
Ignition Miller D6 with auto volt regulation
Battery 6V, 60W
Starting Kick start
Max Power 31 kW / 41 hp @ 6200 rpm
Clutch Dry, three-plate
Transmission 4 Speed constant mesh, close ratio
Gear Ratios 1st 8.4 / 2nd 6.3 / 3rd 4.83 / 4th 4.4:1 (TT close ratio optional)
Final Drive Chain
Frame Single down-tube and twin bottom rails
Dimensions Length: 2130 mm / 84.0 in Width: 700 mm / 27.5 in Height: 990 mm / 39.0 in
Wheelbase 1365 mm / 53.75 in
Seat Height 775 mm / 30.5 in
Ground Clearance 140 mm / 5.5 in
Front Suspension Telescopic fork with hydraulic damping and an offset wheel spindle
Rear Suspension Woodhead-Monroe springs with hydraulic damping, later Armstrong and Girling, adjustable
Front Brakes 7.5 x 1.5 in drum
Rear Brakes 7 x 1 in drum
Front Wheel WM2 x 19
Rear Wheel WM2 x 19
Front Tire 3.00 x 19 in, ribbed
Rear Tire 3.50 x 19 in, studded
Rake 27°
Dry Weight 170 kg / 375 lbs
Fuel Capacity 19.3 L / 5.1 US gal
Fuel Consumption 3.9 L/100 km / 25.5 km/L / 60 US mpg
Braking 48 Km/h / 30 Mph - 0 30.5 ft / 9.3 m
Turning Circle 4.9 m / 16 ft
Top Speed 193 km/h / 120 mph
Colours Black/metallic silver, Deep blue/metallic silveer
Source Wikipedia