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Choose and prepare his ATV

With the return of warm weather, spring is the bike garage. Here are our tips for waking up after hibernation. Points to verify the choice of equipment through the saddle, frame, tires, … we’ll explain everything you need to know for your ATV is on top! It’ll just ride …

The saddle
To avoid the unpleasant “crush syndrome perineum”, choose a saddle wide, perforated and containing gel. Get up from time to time to relax the muscles.

Brakes
V-brakes or disc brakes? The last impede stronger, and gradually work whatever the weather. Their power depends on the chosen diameter – 160 mm to the XC, freeride 180 mm and 200 mm or more for the descent. With V-Brakes, hard brake hard without locking.

The gallows
For sporty driving: a long stem and plunging (11 to 12 cm in length and inclination of 0-5 °).
For hiking: a shorter stem (9-10 cm) and up (10 to 15 °) provides comfort.
For the descent: a short stem (4 to 10 cm) inclined by 20 to 25 ° for maximum maneuverability. Steel is the reference material but aluminum offers a good compromise between strength-weight.

The framework
The crotch (ground to perineum) determines the choice of the size indicated in inches (1 inch = 2.54 cm). For classical geometry, we multiply it by 0.59, a framework for “sloping” by 0.56.
Example for a crotch length of 82 cm on a right frame: 82 x 0.59 = 48.38 cm or 19 inches. Steel, it is affordable and comfortable. Aluminum, it is lighter and more nervous. Composite materials are reserved for bikes performance rigid dynamic lightweight but uncomfortable. Unlike titanium, the ideal bike that is flexible, stainless, lightweight and very comfortable.

Fork
Two families compete in the market: the telescopic forks with elastomer or metal coil spring. Bottom line, they can be quite powerful, but they tend to harden over time. In general, they are used for extreme practices like the descent. Pneumatic forks prefer for their lightness playing on the air pressure in the ducts.

The firmness of the fork is adjusted with a high pressure pump. It depends on your weight to condition the hardness penetration of divers travel available (over 120 mm for freeride). Must also set the trigger (the speed at which the fork returns to its original position) usually with a wheel: Increase it to stony paths, decrease in the raids to avoid getting ejected.

Tires
A physical principle: the larger the width of the tire, the more it sticks. To practice everywhere, 2.30 inches is ideal. The frame is made of nylon braided son, flexible – thus offering more deformation and shock absorption – or straight. The flexibility index is indicated by the number of per inch son: over 100 TPI, this tire is very soft and high quality.

At the rear, prefer aggressive crampons to bite the ground and join in the phases of acceleration / deceleration brutal. front must be aggressive spikes on the edges of the tire to facilitate adhesion curve. More gum is soft, the better the grip.

The tire pressure is generally between 1.5 and 2.7 kg. It depends on the terrain, tires (plus they are large, there must be less pressure) and the preferences of the driver. It should be lower at the front to gain traction and higher in the back for more power during acceleration.

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