Frames flex during skating, and the amount of flex can be a personal factor in which one to choose. For this they tend to take quick and sharp strides. Bearing manufacturing precision generally run from ABEC -1 to ABEC, and some skate bearings are additionally designed to be "loose" to minimize ball rolling friction. It is a reasonable comparative indicator of the relative energy absorbed by elastic hysteresis of a wheel during skating. These bearings are usually cleaned by soaking them in petrol overnight and then cleaning the dirt. The frame position can usually be adjusted with respect to the skate, to adjust for a skater's individual foot, ankle and leg characteristics. At this point, the first across the finish line is the winner.
To some extent, indoor inline races are similar to short track speed skating. Laps late in the race are worth more points, with the final lap worth the most points of all. Points-elimination races A combination of elimination races and points races. Wheels for indoor use are hardest with a durometer of 88— Neither shield type is totally effective, often resulting in the need for bearing maintenance. Frame positioning is very critical as even a minor change from the skater's actual frame position can lead to severe foot pain. Training[ edit ] Inline speed skating requires professional athletes to go through intense physical training. Race venues and formats[ edit ] Inline speed skating races are held in a variety of formats and on a variety of surfaces. The lifetime of bearings used for outdoor speed skating is often quite limited due to damage caused by dirt ingress. Downhill inline racers usually wear skates much more like "regular" inline skates than inline speed skates, along with extensive body covering and protective gear, and strong helmets. Another skater may be the designated winner for the team, and he may avoid chasing any breakaways until late in a race, possibly until the final sprint if the lead pack has never broken up. Another format measures how many miles one can achieve alone in 24 hours or 48 hours. In search of the maximum speed the principal goal is to minimize wind resistance, hence the use of skinsuits, special helmets and techniques. For this they tend to take quick and sharp strides. In about American event sponsors followed suit, and inline half-marathons and marathons were scheduled more and more frequently around the country. Five-wheel frames with smaller wheel have lost favor. For the more populous divisions, there may be a number of heats in order to qualify for the final race. A heavy, protein-rich diet is required to be followed. Racers usually skate alone and the event commonly uses the best time of two heats to establish the winner. Grease assists in holding dirt away, and stays in the bearing longer, reducing maintenance and increasing bearing life. Larger wheels require better skating technique, so skaters generally progress upwards in wheel size as they gain experience. One technique is the T-stop, essentially dragging one foot perpendicular to and behind the other, however this wears the wheels of that skate quickly. Plastic types are preferred since they are quieter. Up until all World Championships were held on quad skates. A frame which is too stiff for a particular skater may feel unstable on corners, and a frame that is not stiff enough will be slower. Hockey stops are possible on speed skates, but require a very deep lean in order to cause the wheels to lose traction and slide, also the fact that wheels are sliding means that the wheels are also wearing down very quickly. It may take a skater several days to weeks to test and adjust the frame position of his new skates.
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