class 12 chassis

[westtexasbaja]

I'm working on a new rear susp with dual pivot arms. Is there a specific vertical dimension between the "torsion housing" cross rail and the 2 middle rails? What is the reason the mid-rails go under the cross tube? Can the cross rail be recessed into the mid-rails?

Is 1.5" .120 enough for the "torsion housing" rail?

What is the minimum wall thickness for members not required to be 1.5" .120 (like mid/bottom rails)? .095? .065? How about minimum thickness for 1" diagonals?

In regard to B pillar/rear hoops: Is it better to have the "elbow" top rail continuous with upper hoop and lower B pillar pieced in (this is what I'm used to)? Or have the rear hoop continuous floor to roof with the top elbow rail interrupted?

Thanks,
Grayson

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[eliwallace]

I Would Go 2 Inch .120 On That Housing 4130 Perferably