Tubing,
Nice looking build on the Cub. I love to build and it took me 3 years of part time building to do mine. I used a OS 40 Surpass 4 stroke, standard Hitec servos and only one on the ailerons. The bellcranks were the worst part. Using two Hitec HS81 would have been a much better choice. I had to cut the firewall back about 1 1/2" to keep the nose of the cowl in the correct place. The plane ballanced fine this way. I also cut one bay out on each wing to give the plane more roll authority. Put two pilots in and she will fly this summer. Keep the pics coming.
JEB