JavelinJoe

right so ive got a model, put it in blender, split it up then put it toghether in unity blah blah, exported it and placed it in my game, now heres the problem, ive done this with 3 different models of 3 different aircraft, and they all have really really wierd centre's of mass, nowhere near the plane, which means i cant fly them, heres a screenshot of the aircraft and its wierd centre of mass....https://dl.dropboxusercontent.com/u/5527081/Help.jpg.... can anybody help me put the centre of mass elsewhere, nearer the middle of the body you can see?, thanks

ok, ill try that, but im new, where is the physics category in blender???

Hello, i am completely new to mod making on pretty much any game so if you answer, please answer like i have no knowlege of any of this modeling business and try to make it as simple to understand as possible , I have made my model, added the textures and a material ect thats all fine, and just to make a simple collision mesh i placed a big rectangle mesh around my model, i then named this "node_collider" and added a material to it, I can place my object into kerbal and attach it to a cockpit, however it just falls through the floor like it dosent exist, and i cant attach anything to its surfaces, objects in the hangar just go through it like it isnt a solid object, what am i doing wrong?