helicopter conversion

Hey guys, I believe its time for another exciting and difficult flitetest challenge!(been a while since you did a viewer request challenge) Outline: The target is to build an aerial refuelling aircraft which can refuel/recharge a fleet of 1-3 small fighters.(fairly small, maybe 20" wingspan...

Hello everyone. Just found Flite Test in the last month when I started getting interested in quad copters. I just have a small viper quad so far. I have a Dumas Windy airboat with a OS .20 engine that I built about 20 yrs ago. Lots of fun. Except last week, the boat scooted forward after I...