Global-flat.com Board
English => Parts & Bikes => Topic started by: ancientskool on February 22, 2010, 06:22:33 AM
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Is there some calculation you can do to figure out the diameter of a sprocket if you know how many teeth it has?
??????
I'm sure I'm not the only one who has ever wanted to figure this out!
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In inches, every pin is 1/2" from 1 to the next. so a 44 t = 22" and so on.........
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In inches, every pin is 1/2" from 1 to the next. so a 44 t = 22" and so on.........
My math skills aren't the best, but that would give you the circumference right?
Let's assume a 28" sprocket - I don't think it's diameter would be 14". I just measured the one I have and it's between 4 and 5" (hard to measure on a bike with the cranks on).
Circumference = Pi (Diameter)?
So, Circumference/Pi = Diameter?
So, a 28 tooth sprocket would have a circumference of 14" and a diameter of 4.46"? (28/3.14)?
That seems about right.
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oops. Yeah thats for Circumference.
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Yes, you are not the only one. Here you are
(http://img694.imageshack.us/img694/3235/diamc.jpg) (http://img694.imageshack.us/i/diamc.jpg/)
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THanks guys!