Wow, I did not expect such interest

So here are more pictures. Either I don't understand the SPAD instruction or something is wrong. I'm talking about the closing wingtips - it did fit fine all around but at the leading edge the fold was bad. I just left it open and then I filled them out with Gorilla glue than made a foam filling. See the picture .

Now I'm putting together ailerons. They are the same construction as the wing: balsa ribs and LE and coroplast covering. You can see balsa blocks for Robart hinges and for control horn. This is the picture just before I put the top covering (it will be 2mm coroplast)

As for the engine I'm going to test Poulan 25 running gas-glow mix (5 gas, 1 15-18 fuel) with glow plug powered all the time. Standard mix doesn't work well for my carb and transition is quite bad so I had to reduce the amount of methanol. To get maximum performance I need to keep glow plug under power all the time. I did a bench test and the engine performed very well (7650 rpm on MA 16x8 Classic). The fuel consumption is the best part - I run it for 15 minutes WOT on 8 oz fuel tank. CoroCub will have 24 oz tank