Build Variables

Link length: Help mm
Goal (what to compute): Help

Rear Sprocket / Cog (r) Variables

Input Method: Help
Number of Teeth: Help

Front Chain Ring (R) Variables

Input Method: Help
Number of Teeth: Help

Chain (A+B+C+D+s)

Input Method: Help
Number of Links: Help

Chainstay Distance (x)

Chainstay Distance: Help mm

Chain Slack (s)

Total Slack: Help mm
Tool: Help         Main View: Help         Main Scale: Help
Legend:      Leading Spokes Help      Trailing Spokes Help      Radial Spokes Help

Computed Values

Goal: Chain Link Length:
Chain Links: Chain Length:
Chainstay (x): Chain Slack (s):

Sprocket Teeth: Chainring Teeth:
Sprocket Diameter: Chainring Diameter:
Sprocket Radius: Chainring Radius:

A: C:
B: D:
A+B+C+D: R-r: