I’m just starting with UE4 and created a model in Blender and got it into UE4 without any issues (followed a couple youtube tutorials).
Now that I have it in, I’m trying to replace the Sedan mesh and physics with that of my model, however, when I do so, my model doesn’t drive anywhere. I’m not sure what I’ve done wrong.
Here’s what it looks like:
I can disable gravity on the turret and the swivel box at the top and they won’t drop to the ground like that (as fast), however, even when I do this, the tank doesn’t move when I try move with the control, it goes nowhere. I’m pretty sure I’ve setup the physics the same as the Sedan.
Here’s what happens when I simulate physics in the physics object (with gravity on my turret/swivel):
Any help solving this would be appreciated, it seemed so straight forward! 
