Das Not Ugly build
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Das Not Ugly build
The "Das Not Ugly" (DNU) looks like a diminutive Ugly Stick so I suppose it is a scale model of a model. Phil Kraft's iconic design, which came out in the late 60's was indeed ugly, but this one is actually cute. Designed for an .049-.061, I obtained the kit from Steve Adams of Select Hobbies. This is the fifth Select Hobbies kit I have built and my favorite. The wing went together quickly. Rib spacing was determined by notches in the three piece webbing; the fit was superb, so the plans were only used for construction reference and to make sure the ribs were square to the spare. All I had to do was assemble the laser-cut parts and then "spot weld" everything with thin CA. The pictures below show the plans, completed wing and fuselage and empennage parts. A fifth photo shows the airplane ready for covering. I fitted my DNU with a speed 400 sized brushless motor and tricycle landing gear. I plan to cover it in red film using the classic stick color scheme and will add a finished photo and flight report soon.
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I'm using an Atlas outrunner 2308/14, but don't remember exactly what those numbers mean. I think the motor diameter is 23 mm. With an APC 7x4 it is likely under propped but should be fine with the 3 cell 460 mAmp lipo. The ESC is an old Jeti Eco 12 amp unit. I have the same set up on another plane (photo attached) and it really scoots. Rudder/nose gear and elevator will be moved by JR 241 servos and the ailerons will use a Futaba S3114.
#4
I have a scratch built DNU. I have dual aileron servos, steerable nose wheel too. She is under powered with the AP 0.061 in the nose, but she does fly nice and slow. I may tear out the Ap and put in a 3s setup and see if i can get the power level up.
The build is looking good. Looks like everything fits like a glove.
Buzz.
The build is looking good. Looks like everything fits like a glove.
Buzz.
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DNU finished
Here it is ready to fly. I am pleased with the way all components fit. The receiver and servos are aft and the ESC is under the wing so the whole forward hatch area is free for the battery. With an 850 mAmp 3 cell lipo the plane balances per plan. I got a little carried away and covered the whole plane in red before I realized that the classic ugly stick had a white fin and rudder. Also I was lazy and on the wing used some iron crosses I had even though they are a little small. Oh well, it still looks good; I am pleased with the final rendering. Flight testing will occur this evening or sometime this weekend.
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DNU looking better
The DNU is a fun little flyer with a rapid axial roll and a solid feel on the sticks. The other day as I was taking off, my friend was landing but it seems one of us was going the wrong way. Part of the minor damage to the DNU was detachment of the fin and rudder which since they were now off, inspired me to recover them in white as I should have done in the first place. I also printed and attached iron crosses of the appropriate size. The plane has attracted plenty of attention and several have indicated that they want one, until I point out that they have to build it. It really is a great little park flyer and now I have no reservations about its appearance.