Chain Length Calculator
&Calculate
E&xit
Transmission Type
Fixed Wheel
Derailleur
Use Standard Bicycle Chain
Adjustable Chainstay length
Chain Stay Length
Biggest Front Cog
Biggest Rear Cog
Chain Pitch 
Teeth
Desired Slop
Accuracy
Links
Derailleur Allowance
Recommended Chain Length
Slop Adjustment For Fixed Wheels With No Chain Tensioner
&File
&Tools
Conversions
per Link
Unrounded result
Difference
Slop
Chainstay length too short or cogs too big!
ERROR
or
CANCELLED
New
Gives
of
First approximation only
is
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Allowance For Derailleur Rear Gear Change Mechanism
Use
Rear Mech Capacity
Dist between Jockey wheel Centres
Inner Jockey Wheel
Outer Jockey Wheel
Allowance to give some slack
Rear Cog Teeth
Suggested Allowance
Industry Standard Approximation
Triangular Approximation
Rigorous Approximation 
Circular Approximation
Use allowance of 1 link in
links in
Jockey wheels too close together!
Jockey wheels too big or too far apart!
Tangential Length
1 LINK EXTRA FOR ANY DERAILLEUR REGARDLESS OF SIZE
Rear mech can't cope with any more than
Swap for one that goes up to
Don't care
plus
Allow rounding downwards?
Bicycles are 0.5 inch pitch
Chainstay length accuracy - Decimal places of an inch
Bye Bye
Open the
calculator
&Presets
Typical Racing Bicycle Rear Mech
Typical Touring/MTB Rear Mech
Comedy Shimano Acera Rear Mech
Inch
cm
mm
Inches
Millimeters
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Version
Machinehead Software Web Site
Recomended slop about 0.75 inch
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