This online calculator will help you determine the mechanical values and measurements for your frame tubes. All entries should be in millimeters. Don't forget to add a value to the simple & torsional deflection boxes!

16mm 5/8"
19mm 3/4"
25.4mm 1"
28.6mm 1 - 1/8"
31.8mm 1 - 1/4"
35mm 1 3/8"
38mm 1 - 1/2"
42mm 1 - 5/8"
44mm 1 - 3/4"
50.8mm 2"
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