RE: Large U-2 SPYPLANE project
Here's a couple more pictures earlier in the construction process. My scale pilot is getting impatient!
The plug-in wings utilize 2024-T-3 aircraft aluminum tubes. 2-4 foot long 1/4" thick spars carry the load thru the fuselage. The hinges for the flaps and ailerons are miniature piano hinges from Nelson Hobby fastened into 1/4" spruce caps.