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DT1MX

Category: Motocross
Manufacturer: Yamaha show models
Hits: 787
Year 1971
Engine Class 250
VIN Prefix DT1F
Known VIN Range (Vehicle ID Numbers) 90101 to 93684
Tank Color(s) Mandarin Orange
Country of Sale USA
Bore (MM) 70
Stroke (MM) 64
Displacement (CC) 246
Compression Ratio (to 1) 8.2
BHP @ RPM 30 @ 7,000
Torque (kgm) @ RPM 3.1 @ 6,500
Autolube Injection? Yes
Engine Cooling Air
Carburetor Model VM30SH
Ignition Type Magneto
Ignition Timing MM (BTDC) 3.2
Primary Drive Gearing 3.1
Final Drive Gearing (Sprockets) 45/14
Box Gearing First 2.25
Box Gearing Second 1.65
Box Gearing Third 1.26
Box Gearing Fourth 1.0
Box Gearing Fifth 0.77
Fuel Capacity (L) 9
2 Stroke Oil Tank Capacity (L) 1.6
Gearbox Oil Capacity 1.0
Fork Oil Capacity (CC/Fork Leg) 210
Front Tire (stock) 2.75 X 21
Rear Tire (stock) 4.00 x 18
Front Brake Type Drum
Rear Brake Type Drum
Rear Suspension Twin Shock
Ground Clearance (mm) 255
Wheelbase (mm) 1,390
Dry Weight (kg) 111
Spark Plug NGK B8ES
Voltage 6 Volt

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