Tony Kenny Posted September 19, 2017 Share Posted September 19, 2017 Today I had my Phoenix 2k in the air again, I've flown this dozens of times and it's my most stable model that gives me hours of relaxation. But today, she was rolling left and i had to put in about 30% aileron to keep her level. This was happening regardless of direction of flight. Once the trim was sorted, she was straight and level. The wing looks just as straight as usual, the control surfaces looked level, no other changes to the model and everything looked normal. Any ideas why she might have started with such an obvious roll? I did notice a _slight_ side/side woble on the horizontal stabiliser, could that cause a roll though? Quote Link to comment Share on other sites More sharing options...
TigerOC Posted September 19, 2017 Share Posted September 19, 2017 Servo lead trapped underneath the trailing edge of the wing instead of inside the fuse? Quote Link to comment Share on other sites More sharing options...
Tony Kenny Posted September 19, 2017 Author Share Posted September 19, 2017 Actually, for a change I didn't have a lead trapped on the outside of the fuz, which is usually out the right hand side, but can that cause enough drag to induce a roll, or in this case to prevent a roll as today i didn't have the lead trapped outside. Quote Link to comment Share on other sites More sharing options...
Braddock, VC Posted September 19, 2017 Share Posted September 19, 2017 Broken gears on one of the servos? Quote Link to comment Share on other sites More sharing options...
Tony Kenny Posted September 19, 2017 Author Share Posted September 19, 2017 Servos appears to work well in pre flights, no strange sounds, all surfaces moved in sync with each other. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted September 19, 2017 Share Posted September 19, 2017 Check the curly bits on end of wing, mine got cracked n put it out of trim, tother is check the servos as above. Quote Link to comment Share on other sites More sharing options...
Tony Kenny Posted September 19, 2017 Author Share Posted September 19, 2017 Aha! they have both come off and some point and been repaired, the one on the left has a lose bit about 2cm deep, could that tiny bit make that much of a difference? Maybe after so many repairs, I'm getting close to replacing the wings, or at least having a new set as a backup. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted September 19, 2017 Share Posted September 19, 2017 No idea Tony, servo horns not moved on spline has it, easy to check if they're o.k Quote Link to comment Share on other sites More sharing options...
Tony Kenny Posted September 19, 2017 Author Share Posted September 19, 2017 That's a good point, with the way I slide the wings onto a shelf, they could have got disturbed enough to cause a problem but still look aligned., I'll check them out. cheers! Quote Link to comment Share on other sites More sharing options...
onetenor Posted September 19, 2017 Share Posted September 19, 2017 Wing /Tips warping under load but straight when at rest. Give them a twist and look for cracks. Quote Link to comment Share on other sites More sharing options...
David Ovenden Posted September 20, 2017 Share Posted September 20, 2017 You say "rolling" but a turn can also be provoked by the rudder. Is that out of trim? I had an issue with mine this summer where the heat seemed to have caused the metal pushrod to expand more than the foam of the fuselage causing the model to be out of trim and turn. Maybe worth checking your rudder alignment just in case? Quote Link to comment Share on other sites More sharing options...
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