I have a 9CAP with a r138dp 8 channel receiver. I am using 7 channels... 1 rudder, 1 throttle, 2 elevators, and 2 aileron. My question is with the ailerons ( channel 1 and channel 7) when I run the servo test, the range of aileron movement is the same on both channels/wings and considerably more on channel 1 than I can achieve when I try to set endpoints. Even at 140% channel one has considerably less travel than channel seven. Aileron differential is 100% on both channels. What am I doing wrong? About 30 degrees up and down is available in servo test, but maybe 10-15 degrees otherwise with channel 7 (aux) aileron having much closer to full range than channel 1.

Mike

You may need to see how you're mixing the second aileron channel to the first one. For two aileron servos operating off of one channel, you'd turn on either the Flaperon function or the Aileron Differential function. Make sure the endoints for both channels are set to the same amount, and that the mixing function is properly-set. Also, please make sure that the sub-trim for both channels is set as closely to zero as possible.

If all else fails, you can reset the model memory to defaults and start over. To get the results you're seeing, one of your functions is not set correctly.