How to make a Choo Choo launcher

My team just had its first competition and we are trying to make a choo choo launcher like the teams that are successful. Any tips?

Watch reveals and use the search bar

If you really want to be successful create your own design based on what your capabilities are and what you want to accomplish.


Check out the build instructions for Fling in the downloads section of
This robot uses a choo-choo mechanism.