Tractor Construction Set Design Guide

Basic

• Use 4"x4" square tubing, 3/16" to 1/2" wall thickness
• CNC torch holes, typically 1"
• Plates are 1/2" thick
• Holes can serve as holes for pins or bolts
• Plates are in sizes that are multiples of 4"x4"
• For heavy duty joints, 3" pins are used
• 3" holes are reinforced with DOM Tubing for precision of fit
• Bolt-together XYZ corners are a basic design pattern

Details

• Plates may be stacked
• Tubes may be stacked
• Rotating joints are a key motion feature
• Machines may be scaled from sub-ton to 50 ton weight

Calculations

• 3" pivots can be designed for 150 tons of force at the pivot