ORIGINAL: AraTidwell
Ok, so I didn't feel like making a muffler with a beer can.... big deal.
That was just one of the tips you ignored.
Others include but not limited to:
1. 13x4 Xoar or APC - the right prop for 3D on a 55AX
2. Macs one-piece #6720 instead of the stock with baffle removed. Saves 2 oz.
3. A Saito 82 seems to work better for beginner 3D'ers
4. A lighter airframe
5. Careful tuning even with the stock muffler will still 3D just fine.
Ara, profiles aren't cheaper but they sure fly 3d better at this size.