I’ve just bought a second hand T-Rex 300x and I am in the process of configuring it MicrobeastX Plus 5.1. I’m at the setup menu H, servo trim:
It says to “trim the servo center positions so that each servo horn forms an exact 90 degrees angle”
Then, in bold, it stresses that before going to the next step you have to “adjust the linkage rods according to your helicopter's manual, so the rotorhead system is set up neutral and allows to have equal movements in all directions”
My problem is that, if I follow the manual, the swash plate doesn’t look level by far. Actually, it looks so not level that I don’t think that the rods can be adjusted to absorb that amount of difference:
At first I thought that it was a problem in the helicopter. I bought it second hand, and even if the previous owner says he never flew it, I can’t be sure if he messed around with the rods or what. But then, looking at the manual, I am not so sure that it is a problem:
At page 15, user manual says that all three linkage rods should be approximately 12.5mm long.
I’ve measured mine, and they’re all quite exactly 12.5mm long.
Now, the elevator servo is at least 3mm lower than the two aileron servos.
Therefore, if I follow the manual then my swash plate is never going to be level with all three servos at 90Âş.
And I fear that if I unscrew the elevator rod to absorb all the difference, then the linkages are going to be weak and fall off.
I need to investigate further
















