1974 Yamaha RD 250

Make Model	Yamaha RD 250
Year	1974
Engine	Two stroke, torque induction, parallel twin
Capacity	247 cc / 15.0 cu-in
Bore x Stroke	54 х 54 mm
Cooling System	Air cooled
Compression Ratio	6.7:1
Lubrication	Autolube
Induction	2x Mikuni VM28 SC carburetor
Ignition	Battery and coil with breaker points
Starting	Kick
Max Power	30 hp / 22.3 kW @ 7500 rpm
Max Torque	21 lb-ft / 2.9 kgf-m @ 7000 rpm
Clutch	Wet multi-plate
Transmission	6 Speed
Final Drive	Chain
Gear Ratio	1st 19.67 / 2nd 13.6 / 3rd 10.08 4th 7.59 / 5th 6.79 / 6th 6.01
Front Suspension	Telescopic forks
Rear Suspension	Dual shocks
Front Brakes	Single disc
Rear Brakes	Drum
Front Tyre	3.00S-18-4PR
Rear Tyre	3.50S-18-4PR
Dimensions	Length 2030 mm / 79.9 in Width 830 mm / 32.6 in Height 1085 mm / 42.7 in
Wheelbase	1325 mm / 52.1 in
Ground Clearance	150 mm / 5.9 in
Dry Weight	152 kg / 335 lbs
Fuel Capacity	16.5 Liters / 4.2 US gal
Road Test	1974 RD 250 Group Test