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Pulleys
Belts - RPM
Gearing Analyzer
Shift - Speeds - Trace
Motorcycle Gearing
Sprockets RPM km/h
Chain + Sprocket
Calculator
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Band Saw
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RPM Diameter
Dividing Plate
Templates SVG
Inch
Inch
Inch
Inch
Pulley RPM and belt length calculator diagram
Large Diameter
Small Diameter
Centre Distance
RPM Small
RPM Large
Rotate
Pulley RPM gauge diagram
Gap Small
Pulleys May Touch
Enter any 3 Known Values to Calculate the 4th
Driver Pulley
Driven Pulley
Size mm
Size mm
RPM
RPM
Ratio:
If you know any 3 values (Pulley sizes or RPM) and need to calculate the 4th, enter the 3 known values and hit
Calculate
to find the missing value.
For example, if Pulley 1 is 80mm diameter, and spins at 1000 RPM, and you need to find the Pulley 2 size to spin it at 400 RPM, enter Pulley 1 = 80, Pulley 1 RPM = 1000, Pulley 2 RPM = 400, and hit
Calculate
to find Pulley 2 diameter.
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Click slider to select, then use Keyboard Cursor Keys
◄ ► to Fine Tune
Centres
Rotate
Multiple Pulley Sets - RPM Reduction
To calculate multiple pulley sets, where the first driven pulley shaft drives the second driver pulley, and so on, enter Initial Driver Pulley RPM, Number of Sets, pulley Diameters and Centres of each Set below. The RPM of the first Driven pulley is transferred to second set Driver pulley and so on.
To Decrease RPM, choose Initial Bottom pulley and work up. To Increase RPM select Initial Top pulley and work down.
Drag the
Rotate
slider to animate the diagram and see the actual RPM reduction through all the pulley sets.
Sets
?
To Decrease RPM, choose Initial
Bottom
pulley and work up.
To Increase RPM select Initial
Top
pulley and work down.
Initial
Bottom Pulley RPM
Top Pulley RPM
Driver Pulley
Driven Pulley
Centres
Set 1
Diameter
Diameter
Set 2
Diameter
Diameter
Set 3
Diameter
Diameter
Set 4
Diameter
Diameter
?
For confined spaces.
Adjust centres so all Small pulley to Large pulley gaps = selected Gap.
Gap
Rotate
Scale
See Also:
Chain and Sprocket Calculator
Scale Diagrams
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If you need to take full scale measurements directly from your monitor, adjust the size of the diagrams on screen to match a ruler. Does not affect printed sizes. Use keyboard Cursor Keys to fine tune as you adjust scale.
Adjust scale of diagrams to measure 100% scale on screen with a ruler.
Scale
Reset
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All Inch inputs and dimensions are actual physical finished sizes
?
Select output Fraction Precision then Re-Calculate to display.
Fraction Precision
Set
1/8
1/16
1/32
1/64
Decimal "
Metric
Lumber
Nominal - Actual
1 x 2 = 3/4 x 1~1/2
1 x 3 = 3/4 x 2~1/2
1 x 4 = 3/4 x 3~1/2
1 x 5 = 3/4 x 4~1/2
1 x 6 = 3/4 x 5~1/2
1 x 8 = 3/4 x 7~1/4
1 x 10 = 3/4 x 9~1/4
1 x 12 = 3/4 x 11~1/4
2 x 2 = 1~1/2 x 1~1/2
2 x 3 = 1~1/2 x 2~1/2
2 x 4 = 1~1/2 x 3~1/2
2 x 6 = 1~1/2 x 5~1/2
2 x 8 = 1~1/2 x 7~1/4
2 x 10 = 1~1/2 x 9~1/4
2 x 12 = 1~1/2 x 11~1/4
4 x 4 = 3~1/2 x 3~1/2
4 x 6 = 3~1/2 x 5~1/2
6 x 6 = 5~1/2 x 5~1/2
?
Selected value is automatically copied to clipboard. Select then Paste into text box.
Fraction → Decimal
Prec…
1/8
1/16
1/32
1/64
0.1
0.01
0.001
+
-
x
0
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How to Print Large Templates
over multiple pages.
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 - there's dust in the spray mist too!
Calculator
Spirit Level
Bubble Level
How should we spell it?
Metre
Meter
Results
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 U.S. 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
to Mars, this time, let's go Metric, ay?)
GO Artemis II !! (thats 2, not eleven - and Artemis is Metric, not Imperial, no matter what they say)
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