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Bleachers (North American English), or stands, are raised, tiered rows of benches found at sports-fields and at other spectator events. Stairways provide access to the horizontal rows of seats, often with every other step enabling access to a row of benches.
In practice, the distance from the top of the saddle to the center of the bottom bracket is used as the saddle height, e.g., setting up a new bicycle using measurements from another, as this is easier to measure. Other methods and calculations are used for determining seat height, such as LeMond's formula. Some saddles now provide an even ...
Some stationary bike models feature handlebars that are connected to the pedals so that the upper body can be exercised along with the lower body. Most exercise bikes come with mechanisms to apply resistance to the pedals, enhancing the intensity of the exercise. Resistance mechanisms include magnets, fans, and friction mechanisms.
Recumbent bikes have seats with a back, and the seat and pedals are at roughly the same height, so you ride in a seated position with your legs extended. This puts less minimal on your joints ...
Seat lug: a frame lug on the top of the seat tube serving as a point of attachment for a clamp to secure the seat post; Seat tube: the roughly vertical tube in a bicycle frame running from the seat to the bottom bracket; Seat bag: a small storage accessory hung from the back of a seat; Seatpost: a post that the seat is mounted to. It slides ...
Whether integrated or separate, the seatpost bolt can have a simple nut, can be an Allen bolt, or can include a quick-release mechanism, with a handle that releases the clamp without tools. [9] A quick-release allows easy height adjustment of the seat, though increases the risk of seat theft unless it is also used to detach the seat when parking.
The seat tube contains the seatpost of the bike, which connects to the saddle. The saddle height is adjustable by changing how far the seatpost is inserted into the seat tube. On some bikes, this is achieved using a quick release lever. The seatpost must be inserted at least a certain length; this is marked with a minimum insertion mark.
The height of the bottom bracket is of concern when designing the frame. The height of the bottom bracket is the baseline for the rider's height while riding. Combined with the length of the cranks, it determines the bicycle's ground clearance. A higher bottom bracket is useful for mountain bikes.