i have a Showtime 4D 90 and im just setting it up. i have a JR XP6102 radio and i was wondering if anyone knows how to use 2 separate channels for elevator and 2 for ailerons. i know how to do it for just ailerons but not both. Maybe i shou;d use a Y-harness and just trim them on the ball links manually. ( then i have an extra channel for smoke ) man i wish the 7202 had been out sooner. then i would've got it instead of a 6er.

Just use a matchbox on the elevators and use your flapperon mixxing on your radio. I have a futaba setup and im doing the matchbox system. Works great and alows you to setup each elevator servos seperatlly. Id highly recommend that way. If you use a reversing Y you will loose the ablility to adjust each servo. That plus the flapperon on the showtime is extremely fun if you really want to abuse the plane
If you have any other questions just shout. I love my showtime a lot and im also using the satio 125. Which, by the way is a great powerplant for this bird.

Set your standard dual aileron mix. Then using mix4 set the elevator as the master and either the gear or flap as your slave. (whichever you don't use for the aileron mixing.) The 4th mix has inclusive trim and you can adjust each half individually. This has been working very well on my X100 and showtime. And a buddies been using it for his sukhoi.