Make Model | Junak M07R |
Year | 1956-59 |
Production | 10000 (as part of the M07) |
Engine | Four stroke, single cylinder, OHV |
Capacity | 349 cc / 21.3 cub. in. |
Bore x Stroke | 75 x 79 mm |
Compression Ratio | 7.0:1 |
Cooling | Air/Oil cooled |
Lubrication | Dry-sump |
Ignition | Magneto |
Battery | 14 Ah, 6V |
Dynamo | 45 W |
Starting | Kick-start |
Clutch | Multi-plate clutch with cork inserts working in an oil bath |
Max Power | 14 kW / 19 hp @ 6000 rpm |
Max Torque | 27.5 Nm / 2.8 kgf-m / 20.3 ft-lb @3800 rpm |
Transmission | Four-speed constant-mesh |
Final Drive | Chain |
Gear ratios | 1st 3.04 / 2nd 1.97 / 3rd 1.29 / 4th 1.00:1 |
Frame | Double, cradle-type, welded throughout of tubing, provided with holders for side car mounting. |
Front Suspension | Telescopic fork with coil springs and oil damping |
Rear Suspension | Swinging arm sprung on telescopic elements with coil springs and oil damping. |
Front Brakes | Full hub width, of expander shoe type, hand operated |
Rear Brakes | Full hub width, of expander shoe type, foot operated |
Wheels | Wire type, with full width hubs made of light alloy, interchangeable (also with side-car wheel). Both wheels with quick-detachable spindles |
Front Tyre | 19 in |
Rear Tyre | 19 in |
Front Rim | 89 mm / 3.5 in |
Rear Rim | 89 mm / 3.5 in |
Trail | 72 mm / 2.8 in |
Dimensions | Length: 2172 mm / 85.5 in Width: 740 mm / 29.1 in Height: 1095 mm / 43.1 in |
Wheel Base | 1417 mm / 55.8 in |
Seat Height | 755 mm / 29.7 in |
Ground Clearance | 170 mm / 6.7 in |
Dry Weight | 170 kg / 374.8 lbs |
Fuel Capacity | 17 l / 3.9 US gal |
Average Consumption | 3.5 l/100 km / 28.6 km/l / 67.2 mpg |
Top Speed | 125 km/h / 77.7 mph |
The M07R is virtually identical to the M07. It has been adjusted slightly by removing the headlight, different shocks and mudguard. The purpose was to make it fit for racing purposes especially off-road competitions.