Why spokes

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Text Solution. Solution :. Very Important Questions. Latest Questions. The number can actually vary primarily depending on the purpose, but also style, year and even the country of origin. A high spoke count usually equals stronger and more durable wheels. What basically happens is that the load can be distributed evenly among more spokes, thereby lowering the cyclic stress on each spoke.

Lacing patterns will be discussed in the next section. Aero Wheels, on the other hand, have fewer spokes that are usually bladed. The lesser number of spokes is ascribed to the principle that fewer spokes equal lesser wind drag. The catch is that the spokes have to be made of stronger material to support the accompanying cyclic stress. These materials can be heavier than ordinary steel spokes. The idea is that the reduced number compensates for the heavier material.

Bikes for general use often have this pattern. More lacings use longer spokes because the criss-cross means more distance from the rim to the hub. This also means more weight and strength but marginally lesser speed. Mountain bikes, because they are made for tougher roads, may use 3X or even a 4X pattern. The 2X and 1x patterns are found in lighter, faster bikes. The spokes go straight from the rim to the hub without crossing.

These spokes are shorter, lighter and offers less wind resistance. Spokes make wheels cheap, very lightweight and strong. Coming up with a light and strong solid wheel would require expensive materials such as carbon fiber.

Even then, they are still noticeably heavier. Solid carbon fiber wheels are not unheard of, but for most regular bikes, this is an impractical option. For example, spokes are more maneuverable because they are lighter and are not as affected by crosswinds. Bicycles are designed to efficiently make use of the strength from your legs to propel the bike forward.

To illustrate, imagine the drag when biking with a solid wheel against strong crosswinds. A good fraction of the force used would be utilized in countering the angled wind instead of moving the bike, not to mention the possibility of the bike being swept and blown around. In sports, athletes have been known to use streamlined carbon fiber discs in velodromes — indoor track cycling arenas — for increased speed, usually combining a spoked front wheel and a solid rear disc for better maneuverability.

But track cycling in an indoor arena protected from the wind is a far cry from cycling outdoors where crosswinds will make controlling the bike nearly impossible. Fluid Static 1.

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The spokes of cycle wheel increases its moment of inertia. The greater the moment of inertia, the more is the opposition to any change in uniform rotational motion.