hi, at uni theres a track about 6 or 7 metres long, and we have been assigned a task to create a car that has the fastest time possible. I have found these equations....(adsbygoogle = window.adsbygoogle || []).push({});

mph = (rpm x tire diameter) / (gear ratio x 336)

rpm = (mph x gear ratio x 336) / tire daimeter

gear ratio = (rpm x tire diameter) / (mph x 336)

obviously if the track was 200m long, the gear ratio would have to be geared up for speed, and on a 2m track the car would needs alot of acceleration, but how can i use a forumula to create the perfect gear ratio? I realise that gear ratio = (rpm x tire diameter) / (mph x 336) would work, but how do i find the maximum mph? please help

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# Homework Help: Model car formula

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