I fly RC, and pulling back hard on the elevator will rip the wings off a plane, particularly at the bottom of a loop. Alas, I know this from personal experience :-)
Just rolling around the longitudinal axis with the ailerons is pretty low stress, though, at least in a "snap" roll. You loose some altitude, but the load on the wing at the end of the roll is pretty minimal.
Making small elevator changes during the roll to pull back (generate positive G) during the sideways and inverted parts of the roll, and ease off (preventing more G than just gravity/lift of wing) as you return to an upright position is doable with practice. You will loose some altitude, it won't be a "straight" tube/barrel traced.
I fly RC, and pulling back hard on the elevator will rip the wings off a plane, particularly at the bottom of a loop. Alas, I know this from personal experience :-)
Just rolling around the longitudinal axis with the ailerons is pretty low stress, though, at least in a "snap" roll. You loose some altitude, but the load on the wing at the end of the roll is pretty minimal.
Making small elevator changes during the roll to pull back (generate positive G) during the sideways and inverted parts of the roll, and ease off (preventing more G than just gravity/lift of wing) as you return to an upright position is doable with practice. You will loose some altitude, it won't be a "straight" tube/barrel traced.