Norton International Model 30 (1955) vs Norton Commando 961/SS (2005-06)
Comparison technical specifications
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| Make: | Norton | Norton |
| Model: | International Model 30 | Commando 961/SS |
| Years: | 1955 | 2005-06 |
| Engine: | Four stroke, single cylinder, SOHC | Four stroe, Parallel twin, push-rod valve, 2 valves per cylinder, OHV |
| Capacity: | 490.1 cc / 29.9 cu in | 961 cc / 58.6 cu-in |
| Bore x Stroke: | 79 x 100 mm | 88 X 79 mm |
| Cooling System: | Air cooled | Air cooled |
| Compression Ratio: | 7.23:1 | 10.1:1 |
| Induction: | PAzin Amal TT carburetors | Carburettor. Twin 39mm Keihin FCR |
| Starting: | Kick | Electric |
| Max Power: | 22 kW / 29.5 hp @ 5500 rpm | 59.7 kW / 80 hp |
| Transmission: | 4-Speed, close ratio | 5-Speed |
| Final Drive: | Chain | Chain |
| Frame: | Cradle type | Chromium Molybdenum |
| Front Suspension: | Roadholder telescopic fork | Ø43 mm Telescopic fork, Öhlins |
| Rear Suspension: | Undamped plungers | Twin sided swingarm, twin shocks, pre-load adjustable |
| Front Brakes: | Drum | 2 x Ø320 mm discs, 4-piston calipers, Brembo |
| Rear Brakes: | Drum | Single Ø220 mm disc, 2-piston caliper, Brembo |
| Wheels: | Steel, laced wire spokes | Aluminium |
| Wheelbase: | 1410 mm / 55.5 in | 1435 mm / 56.5 in |
| Dry Weight: | 176 kg / 390 lbs | 188 kg / 415 lbs |