Originally Posted by
tiger1964
By the way, are all hitch-mount bike racks so heavy? Why not welded aluminum, or titanium, or something? I suspect mine outweighs two steel bikes hanging off or
Steel has more elasticity. Hanging 50+ lbs with a 1-1.5 feet of a moment arm and the bouncing that occurs requires some flex without cold working to failure.
In contrast, airplane wings are expensive to design and build, and they flex a lot!