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I did a profile komet a while back, but did it single ply for the wing. The problem with a komet is that the motor mounted in the tail is pretty far back relative to the CG location and the nose is short, so you wind up having to put a lot of nose weight in place. It got too heavy and had a bit of wing flutter at high speed. That's why most people do a tractor motor in the front, or do ducted fan/jet as you can put the weight forward where you need it. I had been meaning to go back and do a doubled wing/lower fuse to remove that problem.
Anyway, here it is. Got about 20 flights on it so far. Due to where I had to put the rail buttons to clear the radio equipment, they are pretty far off center, that causes a bit of pitch over off the rod, then a gentle pull up and it will climb. I was trying to trim out the pitch up, but then it would keep trying to go past vertical and the boost would sort of look like a rollercoaster as I tried to damp it out. I finally went back to no trim on boost and just pull up once off the rod and let it go. Glide is pretty good even at 14 ounces. The airframe weight is 4.5 ounces, needed 3 ounces of lead in the nose plus a 1.7oz battery for CG to be correct. As it gets really slow it does run out of elevon, but it settles flat. If you keep speed on you can flare before landing. Anyway, hope it's interesting. Video coming later this morning.......
Markings are trim monokote I cut myself, used a silver sharpie for the panel lines. Model master gray and OD for the paint.
Build thread with lots of pictures...
https://www.rcgroups.com/forums/showthread.php?t=2356237#post30912060
Frank
Anyway, here it is. Got about 20 flights on it so far. Due to where I had to put the rail buttons to clear the radio equipment, they are pretty far off center, that causes a bit of pitch over off the rod, then a gentle pull up and it will climb. I was trying to trim out the pitch up, but then it would keep trying to go past vertical and the boost would sort of look like a rollercoaster as I tried to damp it out. I finally went back to no trim on boost and just pull up once off the rod and let it go. Glide is pretty good even at 14 ounces. The airframe weight is 4.5 ounces, needed 3 ounces of lead in the nose plus a 1.7oz battery for CG to be correct. As it gets really slow it does run out of elevon, but it settles flat. If you keep speed on you can flare before landing. Anyway, hope it's interesting. Video coming later this morning.......
Markings are trim monokote I cut myself, used a silver sharpie for the panel lines. Model master gray and OD for the paint.
Build thread with lots of pictures...
https://www.rcgroups.com/forums/showthread.php?t=2356237#post30912060
Frank