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What to make?

Carbon

Elemental Madness
#1
Here's what I have:
motor
esc- 45amp
battery- 2200mah 3 cell

flying wing is the way i want to go i think. ideas?
 
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earthsciteach

Moderator
Moderator
#2
Flying wing is a great idea! That motor can push a pretty decent sized wing around, but it won't be speed demon. Think large and stable. Here's a layout that should work well. Dimensions are in inches.
 

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earthsciteach

Moderator
Moderator
#3
I recommend delving into hot wire cutting while you are at it. If you have a car battery charger, all you need is a steel, E guitar string ($0.99) and a simple wood frame to pull it taught. Then, simply make the root chord and tip chord airfoil profile from a piece of plywood or balsa sheet (not rocket science), hot glue to a piece of xps foam board insulation from the hardware store, and cut. Easy as can be!

Well, its a good idea to practice cutting on scraps before cutting your wings. It takes a couple of times to get a feel for the speed to cut. Tip: Even though the wing tip profile may be shorter than the root profile, make them the same length. I know that makes no sense, but I can't think of how to describe it in words well. Um.... Make the tip profile with a tail straight out from the trailing edge so the the tail length + tip profile length = the root chord length. It will become apparent why you want to do this when you cut.
 

earthsciteach

Moderator
Moderator
#5
There are so many ways you can make one, but they all boil down to stretching a length of Nichrome wire or thin steel guitar string tight and passing dc current through it. I find a 12 v car battery charger works great for up to 30" of wire. It may work for larger sizes, but I haven't built one that long, yet.

I'll post a pic of mine, but it isn't the way I'd do it, if I was to start over. It works just fine, but there are some aspects of it that I could improve. I suggest you google hot wire foam cutters and search the same on youtube. You'll find a bunch of information and techniques of construction.
 

PaulT

New member
Mentor
#7
I'm just in the process of getting some blocks of EPO, but this Divinity 2 looks like an awesome build...time, time I need more time....