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Motorcycle Gearing Calculator - RPM to Speed - Shift Tracer - Sprocket and Tire Comparison - Sprocket Spread Graph
1st
2nd
3rd
4th
5th
6th
7th
8th
RPM
Max RPM
Sprocket Spread Graph -
Sprocket combinations that vertiacly align are equal in ratio.
Front Sproc Scope
Rear Sproc Scope
Focus
Align Ratios
Enter gear ratios, primary ratio, sprocket sizes and tire diameter, then drag
RPM slider to calculate speed from RPM.
Drag
Max RPM slider to adjust the range of the RPM and Speedometer Gauges.
Enter
Shift at RPM, select gear to shift to and hit
Shift and Trace to run up through the gears
recording shift point RPM and km/h - mph.
Check
Sprockets Compare and enter alternate sprockets for comparison. The speedometer will display 1 needle for each sprocket set.
Or run Shift and Trace then hit
Copy Diagrams to copy diagrams to page footer, edit and repeat to compare multiple combinations.
To calculate Chain Link adjustment to maintain rear wheel postition when changing sprockets, use our
Chain and Sprocket Calculator
Copy, paste and transfer (email, text etc) this bike data to another device.
Then click Load Transferred Bikes and paste data to transfer.
Paste transferred data and click →
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Fraction Precision
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All Inch inputs and dimensions are actual physical finished sizes (unless otherwise noted)
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All Metric Inputs in Millimetres (unless otherwise noted)
If you're cutting blocks, concrete, stone or
ANYTHING and there's
DUST - DON'T TAKE THE RISK
Don't cut it, or cut it wet so there's
NO DUST -
Silicosis Sucks
And if you're cutting wet, wear a mask - theres dust in the spray too!
What do we think? - They're 2 different things:
A
Meter is a device to measure things - like a Volt Meter or a Parking Meter
A
Metre is about 3'-3~3/8"
Although diameter and perimeter as measurements - don't seem to fit very well
If the US ever goes Metric, you'll be able to use a Meter to measure Meters - A Meter Meter
(And when we go back to the moon, let's go Metric, ay?)
Built something using our calculators?
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