Jawa 350 Chopper (1997) vs Jawa 644 Chopper (1994) vs Aprilia RSV 1000R (2005) vs Aprilia RSV 1000R (2006)
Comparison technical specifications
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| Make: | Jawa | Jawa | Aprilia | Aprilia |
| Model: | 350 Chopper | 644 Chopper | RSV 1000R | RSV 1000R |
| Years: | 1997 | 1994 | 2005 | 2006 |
| Engine: | Two stroke, twin cylinder | Two stroke, parallel twin | Four stroke, longitudinal 60°V twin, DOHC, 4 valves per cylinder | Four stroke, longitudinal 60°V twin, DOHC, 4 valves per cylinder |
| Capacity: | 343.5 cc / 20.96 cu in | 343.4 cc / 21.0 cu in | 997.6 cc / 60.9 cu-in | 997.6 cc / 60.9 cu-in |
| Bore x Stroke: | 58 x 65 mm | 58 x 65 mm | 97 x 67.5 mm | 97 x 67.5 mm |
| Compression Ratio: | 9.8:1 | 10.2:1 | 11.8:1 | 11.8:1 |
| Cooling System: | Air cooled | Air cooled | Liquid cooled | Liquid cooled |
| Induction: | Carburetor | Jikov 28-29 CE horizontal carburetor, slide type | Integrated electronic engine management system. Indirect multipoint electronic injection. Throttle body diameter 57mm. | Integrated electronic engine management system. Indirect multipoint electronic injection. Throttle body diameter 57mm. |
| Ignition: | TCI (Transistor Controlled Ignition) | Magneto VAPE A67 contactless | Digital electronic with one spark plugs per cylinder | Digital electronic with one spark plugs per cylinder |
| Starting: | Electric and kick | Kick | Electric | Electric |
| Clutch: | Wet, multiple discs, cable operated | Multi disc in oil bath | Multiple disk in oil bath with patented PPC Claimed Horsepower: -assisted hydraulic control. | Multiple disk in oil bath with patented PPC Claimed Horsepower: -assisted hydraulic control. |
| Max Power: | 17.2 kW / 23 hp @ 5250 rpm | 18 kW / 25 hp @ 5500 rpm | 102 kW / 139 hp @ 9500 rpm | 107 kW / 143 hp @ 9500 rpm |
| Max Torque: | 32 Nm / 3.26 kgf-m / 23.6 ft.lb @ 4750 rpm | 33 Nm / 3.4 kgf-m / 25 ft.lb @ 5250 rpm | 107 Nm / 10.9 kgf-m / 78.9 lb-ft @ 7500 rpm | 107 Nm / 10.9 kgf-m / 78.9 lb-ft @ 7500 rpm |
| Transmission: | 4 Speed | 4 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain, 40/16 (2.5) | Chain, 40/16 (2.5) |
| Front Suspension: | Hydraulic telescopic forks, | Hydraulic telescopic fork, steel spiral springs | Showa 43 mm diameter upside-down fork with adjustable compression rebound and preload | Öhlins 43 mm diameter upside-down fork with adjustable compression rebound and preload |
| Rear Suspension: | Twin shock | Swingarm, hydraulic telescopic in suspension units, spiral springs | Aluminium alloy double banana swing arm, APS progressive system linkage. Sachs hydraulic shock-absorber with adjustable rebound, compression, preload and length | Aluminium alloy double banana swing arm, APS progressive system linkage. Sachs hydraulic shock-absorber with adjustable rebound, compression, preload and length |
| Front Brakes: | Single Ø265 mm disc, single piston caliper | Ø265 mm Disc, hydraulic control | 2 x 320mm discs, 4 piston calipers | 2 x 320mm discs, 4 piston calipers |
| Rear Brakes: | Ø160 mm Drum | Ø165 mm Drum, mechanical control | Single 220 mm disc, 2 piston caliper | Single 220 mm disc, 2 piston caliper |
| Front Tyre: | 90/90-17" | 90/100-17" | 120/70 ZR17 | 120/70 ZR17 |
| Rear Tyre: | 100/90-18" | 100/90-18" | 190/50 ZR17 | 190/50 ZR17 |
| Dry Weight: | 152 kg / 335 lbs | 147 kg / 322 lbs | 189 kg / 416.7 lbs | 189 Kg / 417 lbs |
| Fuel Capacity: | 17 L / 4.5 US gal | 15 L / 4.0 US gal | 18 Litres / 4.8 US gal | 18 Litres / 4.8 US gal |