The FT Spear is a great plane. I had one before and I loved flying it. The only thing that was a pain for me was hand launching it. I never really learned it, so one day I decided to do one launch after the other until it works. Unfortunately after 4 attempts one of my linkage stoppers let go the push rod causing a spectacular death spiral from 100 meters into a row of bushes. That was the end of my FT Spear
... but it lives on in my "Bavarian RC" Logo
But I am sure it wasn't my last Spear. Until then I'll follow your build. Have fun!
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