| JUNAK WB1 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| Four stroke, single cylinder, OHV, air-cooled | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 349 cm3 | - |
| Bore X Stroke | |
| 3.0x3.1 in OR 76 mm | - |
| Compression Ratio | |
| 7.0:1 | - |
| Horsepower | |
| 19/6000 KW(hp)/RPM | 48/- KW(hp)/RPM |
| Torque | |
| 20/3800 lb-ft/RPM OR 27/3800 Nm/RPM | - |
| Fuel System | |
| Carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 4-Speed | - |
| Clutch | |
| Wet Multi-plate | - |
| Final Drive | |
| Chain | - |
| chassis specs | |
| Frame | |
|---|---|
| Double, cradle-type, welded throughout of tubing, provided with holders for side car mounting | Aluminium frame |
| Front Suspension | |
| Fork with coil springs telescopic shock absorbers | - |
| Rear Suspension | |
| ndependent rear wheel suspension on single wishbone, cooperating with 7- leaf spring positioned transversely | - |
| Front Brake | |
| Full hub width, of expander shoe type, hand operated | - |
| Rear Brake | |
| Full hub width, of expander shoe type, foot operated | - |
| dimension specs | |
| Overall Length | |
|---|---|
| 86.4 in OR 2195 mm | - |
| Overall Width | |
| 58.7 in OR 1491 mm | - |
| Seat Height | |
| 29.7 in OR 754 mm | - |
| Ground Clearance | |
| 6.7 in OR 170 mm | - |
| Weight | |
| 721 lbs OR 327 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 4.5 gallons OR 17.0 L | - |
| Wheelbase | |
| 79.1 in OR 2009 mm | - |
