We have launch the 1,5L rocket, and it goes 331 feet ! We have launched the rocket three times, First launch 11 bar (160 psi) Second launch 12 bar (174 psi) Third launch 13 bar (188 psi) The first launch was the highest, it goes 331 feet (101 meter). Because the fin was broken the rocket did not go straight up. Next time with a good onboard video :D