Curated Content, Honda Z50
MAIN FEATURES OF Z50A
23
Aug
Aug
This interesting information originally appeared in a Honda Service Manual dated 1971
- The overhead cam design enables a quiet operation and constant high output over a broad speed range starting at slow speed with very little effort.
- Incorporation of the oil damper tyre cam chain tensioner automatically maintains the proper tension and minimizes the chain noise, further, chain adjustment is unnecessary.
- Riding is simplified by the use of the automatic clutch which is interconnected with the gear change pedal.
- Metal screen and centrifugal filter assures only clean oil to lubricate the critical moving parts.
- Foldable handle bar makes strong in narrow space possible.
- Frame is welded pipe backbone design having a double channel welded to a single main pipe to reduce weight.
- To prevent spillage of fuel during transportation fuel shut off valves are provided in the filler cap and the carburetor.
SPECIFICATION TABLE
| GENERAL EXPORT TYPE | U. S. A. TYPE
(From No. F. 120001) |
U. S. A. TYPE
(From No. F. 270236) |
||
| DIMENSION | ||||
| Overall length | 1.270 mm (50.0 in) | 1.280 mm (50.4 in) | ||
| Overall width | 635 mm (25.0 in) | 590 mm (23.2 in) | ||
| Overall height | 1,000 (39.4 in) | 860 mm (33.9 in) | ||
| Wheel base | 880 mm (34.7 in) | |||
| Min. ground clearance | 170 mm (6.7 in) | |||
| Curb weight | 49 kg ( 108 lbs) | 50 kg (110 lbs) | 53.5 kg (118 lbs) | |
| FRAME | ||||
| Suspension (F) | Telescopic fork | |||
| Suspension ® | Rigid frame | |||
| Brakes | Internal expansion | |||
| Fuel tank capacity | 2.5 lit. (0.7 U. S. gal., 0.6 Imp. gal.) | |||
| Trail | 40 mm (1.57 in) | |||
| Caster | 67° | |||
| Tire size and air pressure (F & R) | 3.50-8, 1.0 kg/cm2 (14.2 psi) | |||
| ENGINE | ||||
| Cylinder layout | Single, tilt up 10° from horizontal | |||
| Valve arrangement | OHV, overhead camshaft | |||
| Bore and stroke | 39 x 41.4 mm (1.535 x 1.630 in) | |||
| Compression ratio | 8.8 | |||
| Displacement | 49 cc (3.0 cu-in) | |||
| Oil Capacity | 0.8 lit. (1.7 U. S. pt., 1.4 Imp. pt.) | |||
| Lubrication | Pressure lubrication & wet sump | |||
| Oil filters | Centrifugal and screen mesh | |||
| Reduction ratios | ||||
| Primary | 3.722 | |||
| Secondary | 2.615 | 2.917 | ||
| Gear ratios | ||||
| 1st | 3.182 | |||
| 2nd | 1.824 | |||
| 3rd | 1.190 | |||
| Starting method | Kick starter | |||
| PERFORMANCE | ||||
| Max. speed | 45 kph (28 mph) | |||
| Max. torque | 0.31 kg-m/4,200 rpm (2.2 ft-lb/4,200 rpm) | |||
| Max. output | 1.95 ps /5,000 rpm | |||
| Fuel consumption | 70 km/lit. at 20 kph (165 mile U. S. gal.,
198 mile/Imp. gal. at 12 mph) |
|||
| Climbing ability | 17° | |||
| Min. turning cycle | 2.6 m (8.6 ft) | |||
| Braking distance | 3.5 m at 20 kph (11.5 ft. at 12 mph) | |||
| ELECTRICAL | ||||
| Ignition | Flywheel magneto | |||
| Spark plug | NGK C-6 H or ND U20FS | |||
| Head light | 6V-15W | 6V-15/15W | ||
| Tail/stop light | 6V-8/3W | 6V-17/5.3W | ||
