Motorcycle chain slack measurement log calculator

Calculate tightest measured-position labels and measured slack spread with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use tightest measured-position labels and measured slack spread to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Supplied chain-slack observations: wheel-position label, slack mm
0deg,20 90deg,25 180deg,15 270deg,20
Supplied minimum comparison slack (mm)
20
Supplied maximum comparison slack (mm)
30
Tightest measured-position labels
180deg
Measured slack spread (mm)
10
Positions outside supplied comparison interval
180deg
Uniform measurement-offset interval that would put every reading inside supplied bounds (mm)
5, 5

Try another scenario

Supplied chain-slack observations: wheel-position label, slack mm
0deg,20 90deg,25 180deg,15 270deg,20
Supplied minimum comparison slack (mm)
20
Supplied maximum comparison slack (mm)
25
Tightest measured-position labels
180deg
Measured slack spread (mm)
10
Positions outside supplied comparison interval
180deg
Uniform measurement-offset interval that would put every reading inside supplied bounds (mm)
Empty: no common measurement offset
Calculation method

Calculation method

Tightest measured-position labels

Positions attaining smallest supplied slack measurement.

Measured slack spread (mm)

Maximum−minimum measured slack.

Positions outside supplied comparison interval

Compare each exact decimal reading to supplied inclusive bounds.

Uniform measurement-offset interval that would put every reading inside supplied bounds (mm)

All readings+delta in [min,max] requires delta in [min−smallest,max−largest]; report Empty when no common arithmetic offset exists.

Symbols and units
a
Supplied chain-slack observations: wheel-position label, slack mm
b
Supplied minimum comparison slack (mm)
c
Supplied maximum comparison slack (mm)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • A supplied observation/interval feasibility worksheet. A uniform arithmetic measurement offset is not an actual axle movement or adjustment instruction; manufacturer procedure, suspension position and mechanical condition are external.
Are these inputs private?

These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.

Further reading

OpenStax: ratios, unit rates and supplied measurement arithmetic ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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