As the name indicates, the trial motorcycles are designed to be driven across any type of road, no matter how rough it is. Trials are also called «off road» motorcycles, for that very same reason. These bikes are specially designed to be driven on rural roads. Easy to drive, versatile, light ?about 70 kilograms? and powerful, it is a unique model when we talk about overcoming obstacles.
However, trial motorcycles are very dependent, since they cannot carry more than 3 liters in its tank. This is due to the fact that they need to reduce the weight to the max. That is to say, this last feature makes of the bike an impossible model to use for long trips. Before environmental awareness, all the Trial bikes would use two-stroke engines.
These motors are very polluting and, as time passed by, they were replaced by four-stroke engines, which are environmental friendly motors.
In order to have a better grip, usually air is let out of the bike tires to release pressure. Tire pressure in the Trial bike is considerably less than in motorcycles driven in the streets. The pressure reduction, however, is a necessary process for the bike to have a better grip, and hinder skidding.
This type of bike is almost exclusively used for competition and that is the reason why it has some special features that make this bike a Trial bike. Some of these features are:
Motor: The Trial bike motor usually has one cylinder. However, sometimes you will find some of them with two V-shaped cylinders.
Fuel: Gas tank capacity in these bikes ranges between 350cc and 750cc. Therefore, there are Trial bikes with limited autonomy and others than can be used to cross long distances. However, it is unusual that people buy these bikes to travel. The almost exclusive use of the Trial bikes is obstacle race and rural spots. The capacity of the gas tank it is not very important, except you want to use this bike for competitions. If this is the case, you will have to evaluate if it is convenient for you to have a heavy but long-lasting gas tank, as opposed to a tank that is lighter but with less capacity.
Cooling: Usually, Trial motorcycles use an air cooling system. Cooling in these motorcycles is essential. Given the mechanical conditions of the bike and the roughness the motor has to overcome and cross complex roads, the motorcycle generates a lot of heat? that is why, it is essential to have a powerful cooling system so the motor will not get damaged.
Starter: Every Trial motorcycle should have a starting pedal or electrical starter. As the gas pedal and the clutch are used differently in the Trial bikes, starting the bike with a pedal is somehow complex. In these motorcycles the gas pedal and the clutch, as well as the gears, do not adjust to speed needs and motor revolutions, but they depend on the road and the air distance you want to cross. We should not forget that these bikes are used to practice acrobatics, thus it is necessary for the bike to be suspended in the air for a few seconds.
Suspension: Front suspension in Trial bikes is 220 mm long. It is obvious that suspension in these bikes is important since they are continuously crossing rough roads with potholes, and with big falls. A Trial motorcycle without proper suspension will not last long.
Fairing: Trial bikes do not have much fairing. The stereotype of the Trail bike demonstrates that when people think about these bikes, they think about a small motorcycle that can jump high and has all the mechanical parts visible. Fairing is not the right thing for a bike that is supposed to be light and comfortable. On the other hand, as these bikes are frequently being repaired, easy access to the mechanical part is required, and a lot of fairing can be a real nuisance for mechanics or even for the owner of the bike.
Seat: Trial bike seats are 880 millimeters high. This height is not casual: a bike crossing different kind of paths with differences in height, potholes and other obstacles has to provide the driver with a very good frontal view. For this purpose, Trial manufacturers put a high seat that provides an excellent view for the drivers, avoiding accidents such as bumping into a tree, stone or bush, falling into a cliff, or losing stability because of a pothole.
Distance from the floor: The Trial bike is elevated 250 millimeters from the floor and it is one of the most elevated models that exist. The purpose of this elevation is to make room for the big suspensions that the bike needs in order to remain undamaged on its difficult trips. And also, this height prevents the bike from hitting protuberances and obstacles on the way: wheels can cross rocks and logs, but the chassis does not have that versatility, and that is why it needs to be elevated. And it is not only about the chassis: if any mechanical part hits a rock or any other solid obstacle, the driver will be in danger.
Tires: On its tireless search for versatility, Trial bikes have mixed tires; that is to say, they are suitable both to use on land or asphalt. Therefore, the vehicle is capable of being driven across any surface, even shifting to different surfaces in the same journey. Mixed tires add versatility and possibilities to the Trial models.
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