Interesting fork and rack-solution. Triangles..always good for stiffening things up. I was a little concerned about the standard Axioms (no hoop) twisting under load..the hoop seemed like a good option. I bought three different bar-stock sections (3/4 x 1/8 aluminum, 1/2 x 1/8 aluminum, 1/2 x 1/8 steel) and pondered on them a bit. I needed 22 inches for the hoop..even though it was a little heavier, I went with the steel bar as it was stiffer overall. At this point the whole assembly(rack, hoop, wheel, fork..) feels like one solid unit. If the weather ever breaks for more than one day around here, we'll be loading it up and see how it does. I expect it'll be fine...I can report back once we get some miles on..