View source for Chain Length Calculation

===Understanding the Problem===

[[Image:Chain-layout-model.gif]]

A chainwheel is not round. Rather, it is a polygon with facet lenth of the chain pitch. The chain leaves the chainwheel, on average, tangent to the pitch diameter. The chain then travels in a (theoretically) straight line to the other chainwheel, meeting it in a similar fashion.

This makes for some interesting math.

===The most accurate math===
[[Image:Chain-length-math.png]]
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Another formula:<br>
[[Image:Emerson-ept-math.gif]]
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===Some Approximations===

===Some Data===
[[Image:Chain-data.png]]
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===Tabular Example===
[[Image:Center-to-center-table.png]]
[[Category:Motorcycle]]
[[Category:Drivetrain (Motorcycle)]]
[[Category:Bicycle]]
[[Category:Drivetrain (Bicycle)]]