Additional images attached.
You will note that there are no stringers anywhere. This is just interlocking ply construction.
See the video how the wood flexes with just a little pressure. As stock, this model was meant to fly of tarmac and can take no abuse. The model is 67" span and has come with a 20cc badge. But with a 120ax its tail heavy and I am considering putting a DLE30on it
http://youtu.be/VltvmDt2qwI
Ameyam