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Calculating the gearing ratio etc problem

357 Views 2 Replies 2 Participants Last post by  2074
Hello,
I was goofing around with calculating speed from gear ration etc, from this equation i found on wikipedia...



i have a problem with the denominator, this example is for a car, so the bottom is multiplying the gearing ratio of the transmission by the differential ..well this is a bike so im assuming i substitute our sprocket for the differential value, but what exactly is the value for our bikes, stock, or even plus minus a few teeth...? How do i figure that out..is it the ration between the drive sprocket and the wheel sprocket??

Thanks
Nick
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48t rear sprocket / 16t front sprocket = 3.0 ratio

50t rear / 15t front = 3.333 ratio


etc. etc.
Thrak, once again, you are the man.
I love you HARD.
Nick
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