The Nitroplanes Kadet Senior, ARF does not have any dihedral in the wings. Number 1 rib is 90 degrees to the wing spar.

I have an existing SIG wing(damaged) and the #1 rib has 3 degrees tilt in it.Therefore the total dihedral is 6 degrees. I
know this because the SIG wing joiner has the angle of 6 degrees.

Iwould send pictures but i don't have the wearwithall to do so. Sorry.

I guess that this was another shortcut the Chinese took to cheapen an otherwise great design of SIG's

............300M.............