Comparison of Ariel FH 650 and Triumph T120 Bonneville 1959

Attribute	Triumph T120 Bonneville 1959 ×	Ariel FH 650 ×
General
Production from (year)	1959	1954
Make	Triumph	Ariel
Model	Triumph T120 Bonneville	Ariel FH 650
Category	Sport	Allround
Engine and transmission
Engine type	Twin, four-stroke	Twin, four-stroke
Fuel system	Carburettor. Amal monobloc carburettor	Carburettor. Amal
Engine details	-	BSA A10 engine
Displacement (cm³)	649	646
Power (kw)	33.6	25.5
Fuel consumption (l/100km)	-	5.1
Cooling system	Air	Air
Transmission type,final drive	Chain	Chain
Bore (mm)	71	70
Stroke (mm)	82	84
Gearbox	4-speed	4-speed
Greenhouse gases	-	118.3 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel control	Overhead Valves (OHV)	Overhead Valves (OHV)
Ignition	Lucas magneto	Magneto
Clutch	Multi-plate, wet	-
Lubrication system	-	Dry sump, two pumps
Compression	-	6.5:1
Exhaust system	-	Twin pipe
Chassis
Front suspension	Telescopic fork.	Telescopic fork, hydraulic
Rear suspension	Twin shocks. Girlings 100 lb/ft spring tension, adjustable pre-set.	Dual coil springs
Front brakes	Expanding brake (drum brake)	Expanding brake (drum brake)
Rear brakes	Expanding brake (drum brake)	Expanding brake (drum brake)
Diameter (mm)	178	-
Frame type	Brazed lug, rigid	Duplex down tubes, swingarm
Front tyre	3.25-19	3.25-19
Rear tyre	3.50-19	3.50-19
Seat	Dual seat	-
Wheels	-	Steel, wire spokes
Other
Starter	-	Kick
Color options	pearl grey/tangerine orange	red
Dimensions
Wheelbase (mm)	1,400	1,422
Dry weight (kg)	183	181
Power/weight ratio	0.1836	0.1409
Seat height (mm)	770	787
Ground clearance (mm)	127	140
Performance
Top speed (km/h)	185	148
Fuel capacity (l)	15.14	15.14
Oil capacity (l)	-	2.3