Andron4000 HW crusher build

[epicentre]

How is the arm going to lock in place if the shot bolt doesn't line up with any of the holes (which it is likely not to)? Also, that bolt is going to be under enormous shear force, especially being that close to the centre of rotation. I really like the idea of a two stage axe/crusher, but think you need a different way of locking the rear arm to the chassis that is both far stronger and will work no matter what position it's in.

[Andron4000]

The cylinder can be mounted on the chassis and can be used to articulate a larger bore shaft capable of taking the load in its own housing so that the cylinder does not take any side loading.
In regards to the alignment with holes, as long as it is acting while the large cylinder is pushing, the arm will overpower the electric system and the the shotbolt will locate into the next hole.