Yeah, it's based on the Lego set, but I ripped off the wings and completely re-did them, making them longer, wider, and more screen-accurate. I also widened the main cargo hold by 2 studs on each side. I'm working on a nice boarding ramp and making the landing gear move further down, lifting the ship high enough to walk under.
About this creation
If anyone wants to make similar modifications to their Theta Shuttles, the following pictures should be sufficient to copy.
The expanded cargo hold. Working on making this more realistic with more chairs, maybe a galley and a bed etc.
The wing hinge mechanism was very difficult to design. The angle Lego has them at is a bit too horizontal according to reference photos. I first modified the angle so that they went down more, but this caused them to make an I I shape when in landing position instead of the nice A shape it should be. I finally ended up making a separate hinge that actually breaks a piece off, but catches the wing. You can see it in some of the following pictures.
Here's how far the wings go down without the extra hinge mechanism.
Extra wing hinge in landing mode.
Extra wing hinge in flying mode.
Here's the piece that breaks off the wing for flying mode, allowing it to extend that extra little bit.