Hello FoamyDM. Thank you for the reply and additional information.
All the issues you listed are part of the reason I never got around to actually building this design.
I'm new to the "Flite Test" way of building. I initially started building the RCPowers planes, then I moved on to building various designs I found on RCGroups, and finally started designing my own. Then I found Flite Test, so the build techniques for DTFB with the Paper still on are a bit foreign to me.
That being said; I usually build with ModelPlaneFoam which has a nominal thickness of around 5.5 - 6 MM, and the tail booms are three sheets laminated together. I was thinking of using two 1x6mm Carbon Strips in the center layer of each of the tail booms and 3mm Carbon Tubes in the Vertical and Horizontal stabs.
I was planning on either cutting a 1/16" piece of Ply, or 3D Printing a wing stiffener for the inverted gull wing area of the center wing section.
I didn't see where you had your servos mounted. My plan was to mount the servos on the wing inline with the tail booms, and just use a long pushrod for the Rudder and use a 90 degree bellcrank to go up to the elevator. I've had bad experiences with the flexible pushrods that the original balsa plans call for.
It's difficult to tell, but in your videos I didn't notice much dihedral on the main wing. You will get better roll coupling on rudder input with more dihedral. The original plans for the Sorcerer call for 4.25" of dihedral at each wingtip.
Hopefully some day soon I will get the motivation to finally build this one.
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