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Highsider
A highsider or highside is a type of motorcycle accident characterized by sudden and violent rotation of the bike around its long axis. This generally happens when the rear wheel loses traction, skids, and then suddenly regains traction, creating a large torque which flips the rider head first off the side of the motorcycle or over the handlebars. The initial traction loss may be caused by: * New tires with wax or similar compounds on the sides of the wheel, or smooth tire on the edges giving low grip on first usage until the asphalt sands the rubber a little bit * Locking the rear wheel through excessive braking * Incorrect downshifting technique, producing excessive engine braking (even if the motorcycle has a slipper clutch) * Applying too much throttle when exiting a corner * Oversteering the bike into the turn by shifting weight to the front wheel and using balance to drift the rear wheel sideways * Exceeding the lateral grip through too much speed (although, this is more lik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lowsider
The lowsider or lowside is a type of motorcycle or bicycle crash usually occurring in a turn. It is caused when either the front or rear wheel slides out as a result of either too much braking into the corner, too much acceleration through or out of the corner, or too much speed carried into or through the corner for the available grip. It may also be caused by unexpected slippery or loose material (such as oil, water, dirt or gravel) on the road surface. In the United Kingdom, Canada, New Zealand and Australia it is referred to as a "lowside" rather than a "lowsider". Causes of lowsider crashes All horizontal forces occurring between the motorcycle and the road (such as accelerating, decelerating and steering) are transmitted by friction in the contact patches. There is a limited amount of force each contact patch can transmit before the tire begins to slide. Typically, the maximum force once sliding is slightly less than before sliding."Tire and Vehicle Dynamics", Hans B Pacejk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
