Roll Cage Tubing Calculator

Wall thickness depends on your application and material. For mild steel DOM tubing, 0.120" is common for most applications, while chromoly can use thinner walls (0.095") due to its higher strength. Always check your racing sanctioning body's requirements.

Chromoly 4130 is stronger and lighter than mild steel, allowing for thinner wall thickness while maintaining strength. However, it requires special welding procedures and is more expensive. Mild steel DOM is easier to weld and more cost-effective for most applications.

Section modulus is calculated using the tube's outer diameter and wall thickness. It represents the tube's resistance to bending forces. Higher section modulus means better resistance to deformation under load, which is critical for roll cage safety.

A safety factor of 2.0 is typically recommended for most racing applications. This means the structure can handle twice the expected load. Higher factors (2.5-3.0) are used for extreme applications, while 1.5 might be acceptable for lightweight street cars with less risk.

Yes, the structural calculations apply regardless of your bending method. However, different benders may have specific tooling requirements or bend radius limitations that could affect your final design and material usage.

The most common sizes are 1.75" x 0.120" for mild steel and 1.625" or 1.75" x 0.095" for chromoly. Some sanctioning bodies require specific minimum sizes, so always check regulations before finalizing your design.

A basic 6-point cage typically requires 80-120 feet of tubing, while a full 10-point cage can need 150-200 feet. The exact amount depends on your vehicle size, cage design complexity, and any additional reinforcement bars required.

Different racing classes have specific roll cage requirements including minimum tube size, material type, connection points, and design elements. Always consult your sanctioning body's rulebook before starting construction to ensure compliance.