Scrambler |
Description |
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A Diagram of the Egg Mount as it has been clarified for NC |
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This device is designed so that the launcher travels with the vehicle. Possible advantages include a smoother, more gradual start and building higher inertia, which can help the vehicle achieve futher distances while staying aligned. Disadvantages include not being able to stop the vehicle as rapidly with such increased momentum |
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An excellent finish! The smallest increment Judges will measure in is 1 mm. |
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An array of devices from the 2008 national tournament. |
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This device is using CDs for wheels. The egg backstop is also improperly built, with cardboard (non-rigid) as the material and it fails to meet backstop size and thickness requirements. |
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The braking system for this device- the bottom of the vehicle keeps the wingnut (all the way to the right on the axle) from turning with the axle, forcing it to travel down the threads instead. When it reaches the end of the threads, the wingnut prevents the axle from turning any further, braking the vehicle. This vehicle is in the braked position. |
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Another device designed so that the launcher travels with the vehicle. Possible advantages include a smoother, more gradual start and building higher inertia, which can help the vehicle achieve futher distances while staying aligned. Disadvantages include not being able to stop the vehicle as rapidly with such increased momentum |
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An example of a push-arm design. When he releases the arm it swings down and pushes the vehicle out from beneath the launcher. |
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Another excellent finish. The wheels are again made from CDs and have rubber edging for better traction. Note how the wheels are also marked on the sides to allow a more accurate count of turns to set the stopping distance. |
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Using a triangle to make sure the tip of te egg is even with the starting line |
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Taping the egg is critical. Practice this! The taping requirements have changed for 2009, be sure to read and understand them. |
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This device is a ramp design. The entire vehicle including the egg is considered to be the falling mass for this type of setup. For this to work, enough of the weight needs to be towards the back of the vehicle to give it the necessary momentum to carry it down the ramp and across the track. Please also remember that with ramp designs the tip of the egg still has to be on the starting line, so making a longer car will give the transport more time to build momentum. |
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This transport is using wheels that are old film reels which have been lined with rubber to increase traction |
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This transport is using very high quality wheels from a model airplane. |
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Rubber edged CD wheels |
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This transport put the axles on the top of the vehicle for ease of use. They are able to set the stopping distance without having to pick the car up and turn it over, which is safer for the egg once it is taped in place. This also gives the vehicle a lower center of gravity, making it more stable. Note the egg backstop- this one is properly built. This device was launched with a swinging arm (large hammer) that swung down and struck it on the back of the wedge that is mounted to the top of the vehicle. |
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