I've experienced similar (occasional) problems, but cant shed any light unfortunately..
i run RL (433), fy21ap, 3s5k on 1.2vtx.
have no issues with vtx, but occasionally get a fail-safe, which appears same as what you experienced..
wish i could shed some light, but got no idea unfortunately.
i have fail-safe set on my futaba for fy21ap rth engage, so i am just living with an occasional glitch atm.. ;-(
i wish i could get to the bottom of it, but i cant. i have replaced everything in my set up (radio, rx, tx, servos etc etc etc.. i mean EVERYTHING) and i still experience it (occasionally), which means to me it has got to be environmental right??
Originally Posted by muduck
I was out this morning with both Skywalkers.
Each has the same gear:
4S-5000 motor only
3S 1800 electronics, camera, FY21ap
camera servo with ferrite ring. rings on all servos
the vid shows the worst effected, I aborted at 5km, I couldn't hear the engine surge until I saw the vid at home, rather saw the cam servo glitch, & "felt" the rudder pull to the right. I set the FY to return to launch, & experienced no further trouble.