Yamaha DT-3 250 (1973) vs Yamaha TT 500 (1976 - 77) vs Yamaha XT 250 (1979-80)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha |
| Model: | DT-3 250 | TT 500 | XT 250 |
| Years: | 1973 | 1976 - 77 | 1979-80 |
| Engine: | Two stroke, single cylinder | Four stroke, single cylinder | Four stroke, single cylinder, SOHC, 2 valve |
| Capacity: | 246 cc / 15.0 cu-in | 499 cc / 30.4 cu-in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 70 x 64 mm | 87 х 84 mm | 75 х 56.5 mm |
| Cooling System: | Air cooled | Air cooled | Air cooled |
| Compression Ratio: | 6.8:1 | 9.0 :1 | 9.2:1 |
| Lubrication: | Autolube | Dry sump | Wet sump |
| Induction: | 26mm Mikuni carburetor | 38mm Mikuni | Single 28mm Mikuni caruretor |
| Starting: | Kick | Kick | Kick |
| Max Power: | 24 hp / 17.8 kW @ 7000 rpm | 27 hp / 19.7 kW @ 5900 rpm | 22 hp / 16.1 kW @ 8000 rpm |
| Max Torque: | 24.8 Nm / 18.3 lb-ft @ 6000 rpm | 27.8 ft-lb / 37.6 Nm @ 5500 rpm | 2 kgf-m / 14.4 lb-ft @ 6500 rpm |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | Telescopic forks | Telescopic fork | Leading axle, coil spring forks |
| Rear Suspension: | Dual shocks | Swinging arm | Swing arm single Kayaba shock |
| Front Brakes: | Drum | Drum | 130mm Drum |
| Rear Brakes: | Drum | Drum | 130mm Drum |
| Front Tyre: | 3.25-19 | 3.00-21 | 3.00-21 |
| Rear Tyre: | 4.00-18 | 4.60-18 | 4.60-17 |
| Wheelbase: | 1389.3 mm / 54.7 in | 1420 mm / 55.9 in | 1395 mm / 54.9 in |
| Seat Height: | 813 mm / 32 in | 843 mm / 33.2 in | 840 mm / 33.0 in |
| Ground Clearance: | 254 mm / 10.0 in | 216 mm / 8.5 in | 255 mm / 10.0 in |
| Dry Weight: | 115kg / 253 lbs | 118.8 kg / 262 lbs | 114 kg / 251.3 lbs |