Alpha20
50cc
A buddy had one, the exact same yellow/red scheme with Moki 250. 4th or 5th flight he was doing a loop and the plane went straight down 90 degress towards the ground from about 100 meters high. He even had the time to show us there was no response from the elevator. We dug up the Moki from 40 cm under the ground. It turned out he had used an adjustable ball-link (the ones that you can tighten with a screw) on the elevator, and this came loose in flight. Both elevators shared one link. And the link itself was hidden under the vertical stab - not easy to inspect. Now he has built a new one, engine repaired, and with separate links for each elevator. In the air - the most beautiful model airplane i know of.