Anton,

There is some speed improvement with the Xtreme motors - although the major advantage is they run cooler and you can change brushes. From the noise of hte motor, they do seem to run better.

If you have the Lama 4, the servo arms have been cut which means u cannot have better control of the movemnet. Putting longer arms improves speed.

Try making the linkages between the swashplate and lower rotor holders more rigid (I did this with a pair of 3.5mm ball links and a tiny piece of threaded rod) will give you better speed.

If you dont have them, the Xtreme blades, because they are harder and better profiled, do give extra lift and forward / lateral movement.

With some electronics experience, you could try to put a bigger mosfet to drive the motors. In mine, I put external ESC which are much more efficient.

Overall, there will be two things that improve flight speed: lift and your ability to make the bottom rotor blades move and change pitch.

Hope this helps and gives u lots of ideas to try!


Hugues