Moto-Data

Velocette MAC (post war) (1946-59) vs Yamaha SR 400SP (1979) vs Honda GL 650 Silver Wing (1983-) vs Honda CBR 400RR (1989)

Comparison technical specifications


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1946 Velocette MAC (post war)
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1979 Yamaha SR 400SP
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1983 Honda GL 650 Silver Wing
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1989 Honda CBR 400RR
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Make: Velocette Yamaha Honda Honda
Model: MAC (post war) SR 400SP GL 650 Silver Wing CBR 400RR
Years: 1946-59 1979 1983- 1989
Engine: Four stroke, single cylinder, OHV Four stroke, single cylinder, SOHC, 2 valves per cylinder. Four-stroke. longitudinal 800 V-twin, SOHC, 4 valves per cylinder operated by pushrods Four stroke, transverse four cylinder, DOHC, 4 valve per cylinder.
Capacity: 349 cc / 21.3 cub in 399 cc / 24.3 cu-in 673 cc / 41.1 cub in. 399 cc / 24.3 cu-in
Bore x Stroke: 68.5 x 96 mm 87 х 67.2 mm 82.5 x 63 mm 55 x 42 mm
Compression Ratio: 6.75:1 (from 1951) 8.5:1 9.8:1 11.3:1
Cooling System: Air cooled Air cooled Liquid cooled Liquid cooled; radiator with cooling fan
Ignition: Lucas K2F magneto CDI Transistor Digitalized full transistor ignition
Starting: Kick start Kick Electric Electric
Max Power: 11 kW / 15 hp @ 6300 rpm 27 hp / 17.1 KW @ 7000 rpm 47.5 kW / 64 hp @ 8000 rpm 59 hp / 42.2 kW @ 12500 rpm
Transmission: 4 Speed 5 Speed 5 Speed 6 Speed
Final Drive: Chain Chain Shaft Chain
Front Suspension: Pre war: Webb girder style Post war: Air-sprung Dowty Oleomatic forks 35mm Telescopic fork Telescopic coil spring air assisted 41mm Showa damper-rod forks with adjustable pre-load
Rear Suspension: Hydraulic shocks Dual shocks, 5-way adjustable preload Swing arm compound linkage to single shock Showa gas/oil shock with adjustable preload and compression
Front Brakes: 7 in., drum Single disc 2 x 240 mm discs, 2 piston calipers 2x 275mm discs 4 piston calipers
Rear Brakes: 6 in., drum Drum Drum Single 220mm disc 2 piston caliper
Front Tyre: 3.25 x 19 in 3.50-19 2.15-19 120/60-17
Rear Tyre: 3.25 x 19 in 4.00-16 130/90-16 150/60-18
Fuel Capacity: 11.4 L / 3 US gal 12 Litres / 3.2 gal 17.5 Litres / 4.62 US gal 15 Litres / 4.0 gal