Finally I managed to get a new motor! This one is way less powerful than the one before but that doesn't matter because it was overpowered and with this little 24 grams motor and a 2 cell 450 mAh it is still quiet fast. I also changed the rudder assembly because one the first test run it just didn't wanted to turn. I tried making a video but the quality isn't that good and it was filmed indoors. Soon I'll make a better one outside when I can find some spare time!
Here is the link for the video: