Tuesday, May 1, 2012
Week 5 Post 1
We have come to two conclusions of the problems presented in the last post. By analyzing the equation for speed of the car, it is determined that the gear ratio of the car is inversely proportional to the speed of the car. As the gear ratio decreases, the speed increases. The smallest possible gear ratio will be achieved by attaching the largest possible gear to the motor and the smallest possible gear to the axel. Tests will be run with other gear ratios once the car is built, but that is our idea. Also, the mass of the wheels decrease speed. So, there will be two wheels in the back and one wheel in the front. Now that the chassis has been designed, the gear ratio has been determined, the electrical component have been modeled, and the materials have been gathered, there is only one step left to do now: to build.
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You have oversimplified the problem quite a bit. Ever try getting moving from a dead stop on a bicycle in it's highest gear (big chainring up front, smallest cog in back)? The car has to be solved as a system, not just a motor.
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