v120d02s w/devo7 servo subtrim problem

[pinder07]

I'm relatively new to ex helicopters, I had everything working properly and it flew fine. I had to change a servo and now I can not get them aligned to 90 when using subtrim. I have the throttle at 50 and have them as close to perfect as I can manually. But using the subtrim I get the pitch set where I want it and then when I try and set the aileron is moves the pitch and messes up what I just sat it to. What am I doing wrong, or is something messed up. Maybe I should download the new devo7 update. Thanks for the help.

[dbennettya]

Don't use subtrim to center the servos. Just get them as close to 90* as possible without using any trim. Try swapping servo arms to get them all in the same direction and as close to 90* as possible without any trim. Trim messes up the FBL controller and that is what you are experiencing.

Good Luck, Don

[Benvk]

Agree with Don, avoid using any trim to centre the servos. It doesn't matter if the servo arms are not 90%.

Set your throttle hold pitch curve to -50%, 0%, +50%, turn off the gyro on the RX by flipping the ADJ-WK switch, move the throttle stick to the centre position, then level the swash and 0% pitch your blade grips via adjusting the steering link arms. You can do this by eye, it will be good enough.

Don't forget to flip the ADJ-WK switch again before you fly. I've forgotten to do this many times and the heli is all over the place!

[pinder07]

Thank guys sounds like it should work, ill do that after dinner. Just one more question what is FBL controller?

[dbennettya]

FBL = Flybarless

Don

[pinder07]

Got everything set up and it works great. Took a little longer than using the transmitter to level it but it flys better this way. I thought that it stood.for flybarless but I wasn't sure. Thanks for the help.