RT1B (close ratio)
Category: Enduros
Manufacturer: Yamaha
Hits: 624
| Year | 1971 |
| Engine Class | 360 |
| VIN Prefix | RT1 |
| Known VIN Range (Vehicle ID Numbers) | 73101 to 75128 > |
| Tank Color(s) | Yamaha Black W/Red |
| Country of Sale | USA |
| Bore (MM) | 80 |
| Stroke (MM) | 70 |
| Displacement (CC) | 351 |
| Compression Ratio (to 1) | 7.5 |
| BHP @ RPM | 36 @ 6,500 |
| Torque (kgm) @ RPM | 3.96 @ 6,500 |
| Autolube Injection? | Yes |
| Engine Cooling | Air |
| Carburetor Model | VM34SH |
| Ignition Type | Magneto |
| Ignition Timing MM (BTDC) | 3.4 |
| Primary Drive Gearing | 3.1 |
| Final Drive Gearing (Sprockets) | 44/15 |
| Fuel Capacity (L) | 9.5 |
| 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 |
| Rake (degrees) | 29.5 |
| Trail (mm) | 137 |
| Overall Width (mm) | 890 |
| Ground Clearance (mm) | 255 |
| Wheelbase (mm) | 1,400 |
| Dry Weight (kg) | 108 |
| Voltage | 6 Volt |
| Comments | This model had a close ratio transmission |