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Originally Posted by Sparky67
There is only 2 ways to do it correctly, that is notch it like the DSE kit does. Another way is to have Autoweld Chassis CNC mandrel bend the notch. You could also probably specify a thicker gauge steel from Autoweld Chassis, while with 21st CSM then you are stuck with their kit. Now, what I heard is that when you mandrel bend steel. It actually stretches the metal, so actually it is thinner near the bends.
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I'm curious why notching down to less than 1" wide either the stock sheet metal rear "frame" members or the Autoweld Chassis 2" x 3" tubing is "correct" for a 1500 hp application? I'm not an ME, but the notching would seem to compromise the strength of those frame members to resist both side loads and torsional loads.