RE: F3A - Beginner need help
This appears to be a nice setup for your precision flying. I have very good luck with JR 4131 servos for your ailerons. OR use 811, or 8411 alternatively.
Best of luck with your Leo aircraft. Tuned pipe is advisable on most aircraft if you fly F3A since the noise limit is 94 db. Go to CENTRAL HOBBIES . com for perfect match on the pipe setup. SHould be similar to 120 size 2 stroke motors.