How do I make cart go smooth?

Hey, today I was trying to make a cart ride game. Then I tested it, and my cart was shaking plus it couldn’t even climb all rails.
And there is another game which has carts going very smoothly.

Mine: (i don’t know why, but it shakes very much)
Screen_1_1234240726506668032 (1)

Another game: (in Create a Cart Ride)
Screen_1_1234238215536246784 (1)

And while I was trying to figure out how can it be that smooth, I encountered this:
Maybe they added a script to align the orientation. I don’t know.
Screen_1_1234237979187216384

Can someone explain to me how does that work? How can I make my cart go that smooth?

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ngl this might be the wrong category??

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Your game uses the generic system in which 8 wheels keep the cart in place, which usually wiggles as it moves. Meanwhile in Create a Cart Ride, the carts either use physics (with collisions disabled) or CFrames to move along a line that spans along the track, which means that there aren’t any collisions that wiggle the cart as it moves.

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I tried to use CFrames to move along line, but then gravity doesn’t affect the cart. And if you go fast cart needs to fall of.
The part I don’t understand is in the last gif, when the cart touches wall, it aligns orientation with the wall.

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That’s because it collided with the wall in the way that pushes the wheels against it, allowing it to skid onto it (for a short moment), before falling back down because of gravity.

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I think it’s not because of that. I couldn’t record, but it sticks to wall and can climb to all the way up.

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Maybe it just managed to get enough friction on the wall to climb all the way up. I don’t know.

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