What does bump n go even mean, you may ask? It’s a pretty simple mechanism (often used on toy cars) that makes the vehicle drive forward until it bumps into an obstacle, then automatically turn around.
I find this type of vehicle quite interesting to watch, simply because it never takes the same path again: every time it turns, it’ll go a different way. Just put it on the floor and watch it go!
Because you need to see it in action to fully understand what I mean, here’s a demo video:
I’ve built this type of mechanism many times before, and this is the best one yet.
I hope you enjoy it!
This is from 3 years ago, and it was the first time I successfully built a bump n go mechanism. The bng wheel has the exact same concept (just at a larger scale) and it’s slower due to a different gear ratio. This thing was also pretty fragile, while it doesn’t happen on video, it flew apart quite often. Still, I was really happy with it at the time, it felt like an achievement to get the mechanism right.
Comparing this to my current version really shows that MOC building is a learning process and how things can improve with more experience.
About the Znap pieces getting some use, I made this last year:
It uses the same large bng wheel and has the same speed, though the rotor certainly makes up for that!
A different notable bng model I don’t seem to have photographed or taken a video of was a pretty big plane. Besides the obvious bump n go action, it had blinking lights and 4 passengers that moved up and down (using old style square technic pistons), all of that powered by a single motor. It didn’t actually drive too well, though the mechanism was pretty impressive, I think I should try building something like it again!
