Steel Tubing Calculator
This calculator does a variety of things: it calculates the weight of a butted steel frame tube along with an indexed measure of the tube's flexibility and the amount that the tube will deflect with a given load. It also draws a cut-away diagram of the tube which you can see if you're using the Firefox browser. And there are calculations for tensile strength of the material based on both the Rockwell B and C hardness scales.
To use it all you need to do is modify the numbers. Change the length, make the butts thicker or thinner. And so on.
weight: g
flexibility index:
deflection: mm
