The Yamaha TTR 250, an enduro-class lightweight motorcycle, was available from 1993 to 2006. It has outstanding data, thanks to which the bike has become the most popular model in its segment. The absolute sales leader is the modification of the Yamaha TTR 250 Raid, which has all the signs of an enduro, mountain bike and, in addition, is well suited for long trips on public roads. The motorcycle is able to cover a distance of 400 kilometers without refueling at a cruising speed of 70 km / h. On long trips, the biker will need rest, since the enduro's seat is quite rigid. The maximum speed is about 120 kilometers per hour. Raid can be distinguished from other crossovers in the round headlamp.
Mountain trails
Another modification to the base model is the Yamaha TTR 250 Open Enduro, a classic off-road motorcycle. Gearbox ratios are designed for low speeds and dynamic jerks off-road. Driving along mountain trails requires good engine traction, but speed at the same time becomes a purely conditional factor.
Yamaha TTR 250 Specifications
Overall and weight parameters:
- full length - 1528 mm;
- width, mm - 835;
- height at the helm level - 1260 mm;
- height on the saddle line - 875 mm;
- wheelbase, center distance - 1425 mm;
- ground clearance, clearance - 305 mm;
- gas tank capacity - 16 liters;
- dry weight - 121 kg;
- fuel consumption - 3.8 liters.
The motorcycle is well balanced and can move at a critically low speed without blocking. Yamaha TTR 250 model , whose characteristics are maintained at the level of the best world standards, is one of the best-selling sports bikes on the market . This is facilitated by the relatively low cost of the motorcycle.
Power point
Motorcycle engine Yamaha TTR 250, gasoline, four stroke:
- motor type - single-cylinder;
- cylinder volume - 248 cc / cm;
- power close to maximum - 30 liters. from.;
- compression ratio - 10.4;
- torque - 26.4 Nm at 7200 rpm;
- piston stroke - 59 mm;
- cylinder diameter - 73 mm;
- food - carburetor, diffuser;
- gas distribution - a four-valve mechanism with automatic change of the opening height of the intake valves;
- cooling - air;
- transmission - six-speed gearbox with lever foot switch;
- clutch - multi-disc, working in an oil bath, reinforced;
- clutch drive - flexible, cable.
Chassis
Specifications:
- wheels, dimensions - front 3.00 / 21, rear 4.60 / 18;
- front suspension - fork, hydraulic, stroke amplitude 150 mm;
- rear suspension - articulated, pendulum with monoshock-absorbers, 136 mm stroke;
- brakes - single disc, ventilated, on both wheels.
The road version of the Yamaha TTR 250 is equipped with an electric starter with a kick-starter.
Driving performance
The motorcycle is well balanced and can move at a critical low speed, without blocking. When driving in a straight line at a speed of over thirty kilometers per hour, it ideally holds the road, its directional stability is so stable that it can serve as an example for any road bike. However, it is necessary to slow down slightly on bends; it is difficult to pass through sharp turns due to the too large departure of the front wheel. The angle of the fork is excessively high.
disadvantages
The TTR 250 bike engine has one major drawback - it is a too thin cylinder liner. The wall thickness of the working part of the cylinder was reduced in order to increase the diameter of the piston and increase the volume of the combustion chamber. As a result, it turned out that the motor became afraid of cold water, or rather, its impact from the outside. On a motorcycle, you can not drop into the river and other bodies of water, as this violates the thermal regime of the engine. When you try to drive ford, the motor wedges, and the piston destroys the cylinder wall. In this situation, the engine is overhauled.
The disadvantages of the motorcycle can also be attributed to the instability of the exhaust pipes to corrosion. The exhaust manifold is not chrome plated and is not coated with a protective anodizing layer. As a result, the metal rusts over time.
Both of these shortcomings were eliminated in due time. The exhaust pipes are covered with heat-resistant molybdenum, and the liner in the engine was removed, the cylinder began to be made all-metal, with subsequent boring.
Restyling
Every year, the Yamaha TTR 250 motorcycle was restyled. There have never been any dramatic changes, because the design of the bike is perfect. However, during the operation, minor flaws accumulated that required correction. Sports bikes, as a rule, require special attention in terms of the strength of the rear suspension, which accounts for a significant load. And enduro class bikes and even more so need to monitor the running gear. In order to avoid breakdowns, preventive examinations must be done on time.
The exterior remained virtually unchanged throughout the entire production period. And if today, buying a motorcycle with one’s hands, the buyer will notice something that was not on the factory-made bike, then the previous owner did the tuning and added some details from himself.