umm, are you sure you know what you're talking about?

The guy at the hobby store says you need 4 channels for a gas plane. And everyone I've looked at via the internet, hobby store and magazines require 4 channels. And the planes I am looking at are trainers with basic up down right left function.

I am fully aware that many electric planes have more than 3 channels. I am new at the hobby but have a very good understanding of basic physics as I am an engineer. My question should have been phrased "Do all fuel planes require ailerons?"

By the way, I found out what was wrong with the aerobird. There is a place where the boom actually clips into on the inside of the fuselage to keep boom from falling down. I did not have the boom in the groove, thus the boom was free to move, even with the epoxy.