Évaluations - 3, GPA: 4.3
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Facilité d'utilisation
To check for correct standover height, straddle the bike while wearing the kind of shoes in which you’ll be riding, and bounce vigorously on your heels. If your crotch touches the frame, the bike is too big for you. Don’t even ride the bike around the block. A bike which you ride only on paved surfaces and never take off-road should give you a minimum standover height clearance of two inches (5 cm). A bike that you’ll ride on unpaved surfaces should give you a minimum of four inches (7.5 cm) of standover height clearance. And a bike that you’ll use for rough terrain, jumping or stunt riding should give you four inches (10 cm) or more of clearance. ! WARNING: If you plan to use your bike for jumping or stunt riding, read Section 2.G again. B. Saddle position Correct saddle adjustment is an important factor in getting the most performance and comfort from your bicycle. If the saddle position is not comfortable for you, see your dealer, who has the tools and skill to change it. The saddle can be adjusted in three directions: 1. Up and down 2. Forward and back 3. Horizontal angle Ask your dealer to set the saddle in the position he recommends for you, and to show you how to make further adjustments. Small changes in saddle position can have a substantial effect on performance and comfort. Only one directional change at a time, and only a small change at a time, should be made to your saddle position. Always make sure that your seat post does not extend from the frame beyond the Minimum Insertion or Maximum Extension mark engraved on it. ! WARNING: If your seat post projects from the frame beyond the Minimum Insertion or Maximum Extension mark (see fig. 3) or you cannot touch the bottom of the seat post through the bottom of the interrupted seat tube with the tip of your finger without inserting your finger beyond its first knuckle (see fig. 4), the seat post may break, which could cause you to lose control and fall. NOTE: If your bicycle is equipped with a suspension seat post, periodically ask your dealer to check it. ! WARNING: After any saddle adjustment, be sure that the saddle adjusting mechanism is properly tightened before riding. A loose saddle clamp or seat post binder can cause damage to the seat post, or can cause you to lose control and fall. A correctly tightened saddle adjusting mechanism will allow no saddle movement in any direction. Periodically check to make sure that the saddle adjusting mechanism is properly tightened. If, in spite of carefully adjusting the saddle height, tilt and fore-and-aft position, your saddle is still uncomfortable, you may need a different saddle design. Saddles, like people, come in many different shapes, sizes and resilience. Your dealer can help you select a saddle which, when correctly adjusted for your body and riding style, will be comfortable. ! WARNING: Some people have claimed that extended riding with a saddle which is incorrectly adjusted or which does not support your pelvic area correctly can cause short- term or long-term injury to nerves and blood vessels, or even impotence. If your saddle causes you pain, numbness or other discomfort, see your dealer. C. Handlebar height and angle Your bike is equipped either with a “threadless” stem, which clamps on to the outside of the steerer tube, or with a “quill” stem, which clamps inside the steerer tube by way of an expanding binder bolt. If you aren’t absolutely sure which type of stem your bike has, ask your dealer. If your bike has a “threadless” stem, your dealer may be able to change handlebar height by moving height adjustment spacers from below the stem to above the stem, or vice versa. Otherwise, you’ll have to get a stem of different length or rise. Consult your dealer. Do not attempt to do this yourself, as it requires special knowledge. If your bike has a “quill” stem, you can ask your dealer to adjust the handlebar height a bit by adjusting stem height. A quill stem has an etched or stamped mark on its shaft which designates the stem’s “Minimum Insertion” or “Maximum extension”. This mark must not be visible above the headset. ! WARNING: The stem’s Minimum Insertion Mark must not be visible above the top of the headset. If the stem is extended beyond the Minimum Insertion Mark the stem may break or damage the fork’s steerer tube, which could cause you to lose control and fall. ! WARNING: On some bicycles, changing the stem or stem height can affect the tension of the front brake cable, locking the front brake or creating excess cable slack which can make the front brake inoperable. If the front brake pads move in towards the wheel rim or out away from the wheel rim when the stem or stem height is changed, the brakes must be correctly adjusted before you ride the bicycle. Your dealer can also change the angle of the handlebar or bar end extensions. ! WARNING: An insufficiently tightened stem binder bolt, handlebar binder bolt or bar end extension clamping bolt may compromise steering action, which ...