Forums » News and Announcements

FORGED WHEELS COMBINE LIGHTNESS AND STURDINESS

    • 625 posts
    August 30, 2022 6:39 AM +0430

    FORGED WHEELS COMBINE LIGHTNESS AND STURDINESS

    Forged wheels combine lightness and sturdiness and are fruit of a refined technology. A product commonly used in competitions, but also recommended as an upgrade for the best super sport production motorbikes.
    For years, street and racing bikes were always equipped with wheels made with spokes obtained by fusion. The only exceptions, as is also true today, were models that sported wheels with spokes designed for aesthetic reasons (custom, old-style, some naked) or destined at least partly for use off road.To get more news about Alloy wheels, you can visit nnxwheels.com official website.
    These wheels have been developed, mainly with a view to making them lighter, and this has created some exceptional models, with hollow spokes and hubs. Wheels are not suspended parts and therefore reducing their weight is always beneficial, enhancing the performance of the bike and improving the conditions in which the suspension is required to work.
    But that's not all, because wheels turn and this has important consequences.

    To begin with, accelerating rotating parts is not the same as accelerating parts that don't rotate.The variation in the linear speed (let's say of the motorbike, and therefore of the axles on which the wheels are mounted) is indeed then also accompanied by the variation in the rotation speed.

    The indicator that lets us know how much an element can resist the changes in the speed with which it is turning is its moment of inertia, linked not only to the mass, but also the range of rotation (squared).

    When this reduces, the speed with which the wheel is able to "take the turns" increases, in line with the power provided by the engine.The most effective arrangement, is that which, with the same wheel diameter, is furthest away from the axle , and that is, in line with the rim.

    When comparing two wheels of the same weight and dimensions, the one with the lower moment of inertia is advantaged.
    The giroscopic effects, not only tied to the moment of inertia but also to the speed of the wheels, must also then be considered.

    In this case, forces that fail to cause variations in how the motorbike leans are particularly important.And in this case too, a lower moment of inertia is an advantage; indeed, this makes the bike more agile and quicker to respond to changes in direction.The wheels must therefore combine sturdy consistency and reduced weight, with the smallest possible quantity of material in the most outer part, with a view to achieving a lower inertia moment. And here, the structure and the density of the material make their entrance.

    For many years now, racing wheels have been made of magnesium alloy (density 1.8 kg/dm3) and the wheels of production bikes are almost always made of aluminium alloy (2.7 kg/dm3).

    The design of the wheel and the sizing of its components (hub, spokes and rim) are strongly linked to the mechanical properties of the material used: indeed, the higher these are, the lower the number of sections there can be and so the weight is also lower.