Great idea, but do you think it will hold up to the weight? Wheel and tire plus 10 gallons might be pushing it. I really like the way it swings out though.
Innovative idea. Really like how it extends rearward instead of to the side. I've never seen a bike rack that extended out like that. Our own just has a pull pin and the whole armature tilts down the ground.
If those pivot pins rivet-head / peened in place I'd suggest replacing them with some sleeved hardened bolts.