The biggest problem with turning in zero gravity is there's no other force than forward momentum.
The only thing that keeps bicycles upright in gravity is forward momentum. If a bicycle in gravity with no rider tried to turn right on its own, it would fall over. Only if the road curves naturally to the right will it follow and not fall over.
Imagine no bike. You're floating forward in zero-G. Now you want to go right. You turn to the right.... but you're still going forward. It's like that, but on the bike. Nothing is keeping you stuck to the ground, so no matter how you try to move the bike, it will want to keep going in the original direction of momentum, and you will just end up tumbling over if you try to turn the wheel or lean anywhere.
Another way to look at it, just like in the video: if you are tilted, you keep going forward, while tilted. You would literally need some force to pull you in a direction other than forward in order to turn without tumbling toward your original direction.
With a tricycle, when you turn the wheel, the inside wheel is essentially anchored to the ground where it is, and the outside wheel follows the only path that it can, since it can no longer continue going forward. If you were going fast enough during this turn, the whole thing would tip over, similar to how cars in gravity will flip over when they try to turn too fast. Momentum just carries them forward.
The only thing that keeps bicycles upright in gravity is forward momentum. If a bicycle in gravity with no rider tried to turn right on its own, it would fall over. Only if the road curves naturally to the right will it follow and not fall over.
Imagine no bike. You're floating forward in zero-G. Now you want to go right. You turn to the right.... but you're still going forward. It's like that, but on the bike. Nothing is keeping you stuck to the ground, so no matter how you try to move the bike, it will want to keep going in the original direction of momentum, and you will just end up tumbling over if you try to turn the wheel or lean anywhere.
Another way to look at it, just like in the video: if you are tilted, you keep going forward, while tilted. You would literally need some force to pull you in a direction other than forward in order to turn without tumbling toward your original direction.
With a tricycle, when you turn the wheel, the inside wheel is essentially anchored to the ground where it is, and the outside wheel follows the only path that it can, since it can no longer continue going forward. If you were going fast enough during this turn, the whole thing would tip over, similar to how cars in gravity will flip over when they try to turn too fast. Momentum just carries them forward.