Making my own rear strut brace

[lolsteve]

Make 2 brackets which go on the top of the struts, and a bolt on I beam between them?

No welding required easy as pie, and no weak spots.

Mig welding is fine, you won't warp anything unless you're using too much current. of course all welding creates heat and weak spots.

I'd stick to steel, when you weld alloys you need to use a feed wire which won't react with the alloy and weaken the joint over time.

Not a bad idea, certainly easier but could look a little half arsed if it's just bolted together. That and I don't know how small an I beam I could get, structural sizes might be a little overkill/heavy
Going to have to see what the uni has in terms of welding machinery, otherwise might have to see if anyone on here will let me borrow/teach me to weld

I beams don't have much torsional stiffness at all, they warp all over the shop.

Not heard of I beams having torsional problems since although you have to test for torsional bending when you put a solid wall directly on one I've yet to come across an example where the beam passed deflection but failed the torsion. But then again I dont really design them for that purpose often, more deflection or compression. But its unlikely I'd actually use one in this project. Will just go for a circular cross section since it's easy and it works