Plane build guide

Perfectly stabile plane will not be able to take off if wheels make it horizontal. First thing to do if your plane is not taking off is to put height on front side (so nose is higher than tail, and whole plane is not horizontal but under small angle compared to ground). If your plane can take off after this, than make only corrections so it is stabile in flight.

Influence of positions of engines to longitudinal stability:


Influence of position of wings on longitudinal stability:


Influence of position of tail on longitudinal stability:


Influence of position of additional weight on longitudinal stability:


Plane techs from videos:






*all moving should be done in small steps, so one or one pair (symmetrical) of engines/wings per one block.
*tail parts of planes in all corporations have small lift but good stabilizing effect, so for bigger planes should use wings on tail section in combination with stabilizing tail block.

If you have pitch up, you can stabilize it by:

1 - Moving engines upward. Try to do it one engine per one block up, until you find balance.
2 - Moving engines forward. This will move centar of gravity toward nose of the plane and reduce pitching up.
3 - Move wings down. Try one pair of wings (symmetrical left and right) per one block down, until you find balance.
4 - Move wings backward. This will both move center of gravity and will move centar of lift toward back side of plane.
5 - Move horizontal tail (wings) more backward.
6 - Add more wings on horizontal tail.
7 - Put more weight on front side of plane.
8 - Remove extra weight from back side of plane.

Or if you have pitch down, you can stabilize it by:

1 - Moving engines downward. Try to do it one engine per one block up, until you find balance.
2 - Moving engines backward. This will move centar of gravity away from nose of the plane and reduce pitching down.
3 - Move wings up. Try one pair of wings (symmetrical left and right) per one block up, until you find balance.
4 - Move wings Forward. This will both move center of gravity and will move centar of lift toward front side of plane.
5 - Move horizontal tail (wings) more forward.
6 - Remove wings from horizontal tail.
7 - Put more weight on back side of plane.
8 - Remove extra weight from front side of plane.