Ok two planes taxi out to strip plane1: .60 size cap 232 Radio DX7 digital servos DS821 except for throtle small HXT900 9 gram servo. Plane 2 .40 size Sukhoi Radio JR XF631 servos JR 537
I taxied P1 to the end of strip and turned ready for take off aprox 120 m away. P2 stalled at the edge of the strip so I put the radio ( DX7 for p1 ) on the gound with the aerial facing away from P1 at the end of the stip . Note the plane was at idle. I then proceeded to help the pilot to restart P2. Some time passed aprox 1min when I heard P1 throlte up to full noise, by the time I grabbed the radio we both turned and had to jump out of the on coming P1 at full speed. It collected P2 on the ground with P1's prop working its way down the fuse of P2.......... The Plane is baddly damaged see photos. P1 received damage to the leading edge of wing.
No body touched the radio ( DX7), I thought I might of grabed the throtle when picking up the radio and made things worse. We changed the prop on P1 then taxied aprox same distance away, Left it at idle sat the radio on the ground. We folded the aerial touching the ground. We waited about a minute then with out reason the plane throlted up, no thouching anything. We tried the same thing again, this time the aerial straight, so no contact with the ground. Even checked nothing was thouching the bind button on the back of the radio. After a perioid no more than a minute it did tthe same thing .... throlted up.......... Can anyone shed light on this ???????????