| JUNAK WB1 | BMW R 12 |
|---|
| engine specs | |
| Type | |
|---|---|
| Four stroke, single cylinder, OHV, air-cooled | Water-cooled, 2-cylinder, four-stroke boxer engine with four valves per cylinder operated by cam followers and two overhead camshafts per cylinder |
| Displacement | |
| 349 cm3 | 1170 cm3 |
| Bore X Stroke | |
| 3.0x3.1 in OR 76 mm | 4.0x2.9 in OR 102 mm |
| Compression Ratio | |
| 7.0:1 | - |
| Horsepower | |
| 19/6000 KW(hp)/RPM | 95/6500 KW(hp)/RPM |
| Torque | |
| 20/3800 lb-ft/RPM OR 27/3800 Nm/RPM | 81/6000 lb-ft/RPM OR 110/6000 Nm/RPM |
| Fuel System | |
| Carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 4-Speed | 6-speed |
| Clutch | |
| Wet Multi-plate | - |
| Final Drive | |
| Chain | Shaft |
| chassis specs | |
| Frame | |
|---|---|
| Double, cradle-type, welded throughout of tubing, provided with holders for side car mounting | Tubular space frame in steel, engine self-supporting |
| Front Suspension | |
| Fork with coil springs telescopic shock absorbers | USD telescopic forks, 45 mm |
| Rear Suspension | |
| ndependent rear wheel suspension on single wishbone, cooperating with 7- leaf spring positioned transversely | Aluminium Paralever swinging arm, directly linked WAD spring strut, spring base and rebound damping adjustable |
| Front Brake | |
| Full hub width, of expander shoe type, hand operated | Twin disc brake, floating brake discs, 310 mm, 4-piston monobloc fixed calipers |
| Rear Brake | |
| Full hub width, of expander shoe type, foot operated | Single disc brake, 265 mm, 2-piston floating caliper |
| dimension specs | |
| Overall Length | |
|---|---|
| 86.4 in OR 2195 mm | 86.6 in OR 2200 mm |
| Overall Width | |
| 58.7 in OR 1491 mm | 32.7 in OR 831 mm |
| Seat Height | |
| 29.7 in OR 754 mm | 29.7 in OR 754 mm |
| Ground Clearance | |
| 6.7 in OR 170 mm | - |
| Weight | |
| 721 lbs OR 327 kg | 500 lbs OR 227 kg |
| Fuel Capacity | |
| 4.5 gallons OR 17.0 L | 3.7 gallons OR 14.0 L |
| Wheelbase | |
| 79.1 in OR 2009 mm | 59.8 in OR 1519 mm |
| tyres specs | |
| Front | |
|---|---|
| - | 100/90-19 |
| Rear | |
| - | 150/80-16 |
