Untill watching your last video I had no idea you could run one without the blower and get sound. Sounds stupid to you guys probably but I'm new with messing with these things. I figured the chopper itself wouldn't get enough air to create sound. After thinking about it though I guess the non "supercharged" ones work that way
Your's turned out awesome, good work. After looking at your fb I also had no idea there was that many people on fb that liked sirens haha.