JUNAK B20
| Production Year: | 1960, 1961, 1962, 1963, 1964, 1965 |  |
| Type: | Four stroke, single cylinder, OHV |
| engine specs | |
| Type | Four stroke, single cylinder, OHV |
| Displacement | 349 cm3 |
| Bore X Stroke | 3.0x3.1 in OR 76 mm |
| Compression Ratio | 7.0:1 |
| Horsepower | 19/6000 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 |
| Front Suspension | Fork with coil springs telescopic shock absorbers |
| Rear Suspension | Independent 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 | 120.3 in OR 3056 mm |
| Overall Width | 55.9 in OR 1420 mm |
| Seat Height | 29.7 in OR 754 mm |
| Ground Clearance | 6.7 in OR 170 mm |
| Weight | 705 lbs OR 320 kg |
| Fuel Capacity | 4.5 gallons OR 17.0 L |
| Wheelbase | 79.1 in OR 2009 mm |
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