I want to try an idea I have, but I'm not sure how to make a proper working horizontially firing cannon. I'm having some trouble making the rubber trampoline/launcher kind of thing, but what I want is something that will make the 'dillo go at high speeds.
Most of the cannons I've seen are vertical, but I'm not sure where to find a good example of a horizontial cannon.
edit: here is my attempt at a dillo cannon, but I want it to make the dillo go faster. I'm trying to do an experiment and see whether the dillo can go through a solid wall or break it or something. It's probably been done, but I'm just experimenting for myself.