Comments on my mechanical rig?

Hey guys,

I just finished a tutorial with a solution I found to rigging a landing gear. I did it after a lot of experimentation (basically found many ways in which it didn’t work) and going through the manual, and as I’m still trying to grasp the subject of rigging I’m wondering if you guys would do it in a different way?

Here’s the link:

Any tips on how to improve it will be very much appreciated. It is quite long (~40 minutes, I guess it shows that it is my first tutorial, hah), so if you do watch it I really thank you for your time.