In thinking about how I could modify E3D's buggy test print, I noticed the hole at the back of the buggy. So instead of modifying the buggy, why not make use of that gaping hole?
Fun fact: the model was printed on my Ender-2 Pro, which was fitted with a Revo CR.
This model is designed to print in place: no support material required!
The chain will eventually loosen and become flexible, if you gently press the links together. The pin should be a snug fit.
Please show your support by giving it a like, posting your own make, and all that good stuff.
The author hasn't provided the model origin yet.