Hi
earlier in the year 2012, I bought a GW (ARFMFG) Sbach 300 20cc. As you can see in the attached pics, the airframe is basically a frame. I need to strengthen without adding too much weight to keep it 3d. So I have 2 questions
1) Is this airplane suitable for a 20cc dle for 3d or do I need a more powerful dle 30? link is below
2) how to strengthen without adding too much weight? I need to fibreglass the firewall & reinforce the LG but besides that, how to reinforce the joints? Someone suggested CF tape to epoxy onto joints. I that good enough?

http://www.generalhobby.com/goldwing...lor-p-402.html
http://www3.towerhobbies.com/cgi-bin...&I=LXB964&P=ML
ameyam