As mentioned earlier, the UMX Vapor comes out of the box fully assembled and ready to go. All I needed was a 4+-channel radio and a 1S 70mah Lipo flight battery. Using my E-flite Celectra four-port charger, I got the battery powered up quickly and ready for flying. After installing the battery, I plugged it in and started the binding process with my Spektrum ix12. Once bound, I checked to make sure both control surfaces moved in the correct directions and thought about making some adjustments and adding some expo. I decided to wait, however, to see just how well this bird flew with the stock settings.
The ultra-micro DSMX receiver/esc/servo unit is a lightweight board that is mounted on the main carbon rod used for the body of the aircraft.
The powertrain consists of the battery, motor, gear train, and prop. All this works together to form a powerful powerplant for the Vapor. The battery is held in place by hook-and-loop tape on the underside of the carbonfiber body. You can slide it...
For such a small aircraft, the prop is rather large and pumps out a good amount of air for the control surfaces to kick around when guiding the plane.
The pushrod connections to the elevator and rudder have full surface throws, which provide good response from stick movements. Right: The entire rudder moves with any stick movement and can be a handful at top speed. For a plane of this size, it’s a...