Our RV has an external bike rack on the rear end. If not in use you can fold the lower part upright and fix it with a slightly loose clamp. I wanted a more secure but versatile version so I modelled one.
There are two version with slightly different opening gaps, one with a 22 mm gap and one with a 25 mm gap.
Version 2 is a little bit more flexible because of a thinner design
The author marked this model as their own original creation.