created a  spad plan on m.s paint
Will build it in my vacation. Plan to use coro for wings & pvc wiring packing as fuselage.
No measurements.

Please comment

SPA3D is a difficult plane to fly even when made to the exact dimensions. I've made it and flown it. Also the PVC fuse that u are talking about will be of no use as there will be a lot of torsion when u move the control surfaces. To my assessment coro would be a little too heavy for the plane that u are planning. Look for something in thermacole or Styrofoam.

Then come to think of it.......... SPADs are more fun when u experiment with them.

Have fun building

Doc

PS. The SPA3D that I made is my Avatar