Picture of Foam RC Airplane
If you are like most RC enthusiasts you have spare spare motors, servos & batteries. This instructable shows you how to make a flat foam airframe in a couple hours.

I've modified free plans from http://www.foamyfactory.com/ for a faster build that is also stronger.
This requires just 1 foam core board that can be purchased from a craft store.
I used the 1/2" thick board instead of the more common 3/16" version I've used in the past.

Step 1: Airframe Layout

Picture of Airframe Layout
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Print out the full scale design available free from http://www.foamyfactory.com/
Put the design on poster board so you can easily trace out the design for future builds.
I've found that making just the vertical profile of the fuselage, the whole wing and the tail is all you need.
Trace out the designs on the foam board.
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SteveMiner12 days ago

how many money did you spend for this

jkinser18 days ago

Just a thought... 1/2" dia. Balsa Half-Round on the leading edges would significantly reduce drag.

imranayaz4 months ago

how many kv motor and how many amps esc anf how many v battery is been used to make rc plane

and wht is the correct name for that form please let me know

imranayaz4 months ago
What kv brushless motor , what amps esc and how many v battery should be used for making a small rc plane
Assabit4 months ago

A nice RC aircraft . Very easy to make

vipul.tak4 months ago

will you give me design and requirement

which pcb have you used??

I'd like to make your model. I am having trouble getting the plans to load from foam factory. Is there any way you could send me the drawings so that I can print them out.


ssuseelan7 months ago

Is it necessary that the wing should be aerofoil in shape??????

Im kind of a newb with rc stuff so would u recomend I build this model, or should I build a different/easier model?

This is a fine trainer but there are better models out there. Google "Foam Trainer Homemade"

snaqvi14 years ago
i have no rc only foam motors and battries wires what isthey needed to made this plane
remzak snaqvi17 months ago

Transmitter, reciever, servos, lipo battery, brushless motor, brushless speed controller

duct tape3 years ago
It might be easier to cut the foam with a hot wire foam cutter, like this:
remzak duct tape7 months ago

I use a foam cutter for similar planes and it works great.

tomtortoise3 years ago
I have never built an airplane before but i have made robots so i have a Hitec Laser 4, a few standard size servos and some Ni-Mh batteries (1600 mah 9.6v and 8.4v) im wondering if these servos and batteries are too big, if so what ones should i use, and also what size motor should i get, i have no clue what to look for in a motor or prop.

The servos are too big but the battery could work though no optimal. For a motor look for a brushless 1100kv motor around 60g with a 30A speed controller.

TomGFuller2 years ago
What type of servis
remzak TomGFuller7 months ago

Use 9g micro servos. They are about 3$ on hobbyking.

ashwini112 years ago
Hey do we have to do any programing while conecting electronics to transmiter and reciever...??
remzak ashwini117 months ago

If you spend around 60-70$ you can buy an Orange Rx computer radio. With this you can program deflection and change what happens with certain stick inputs. For the beginner though a cheap 25-30$ radio should be fine.

No, unless you create a custom flight controller, you rarely ever have to know any programming in the R/C hobby, hope this helped
what kind of motor do you use?

Brushless outrunner ~1000kv

DocMat9 months ago

Central New York doesn't give many "perfect" flying days, so I've been flying the crud out of multirotors, I'm just getting into planes. I'd rather build and fly foamies because I know I'm going to crash. And you can pick up 20" x 30" sheets for $.99 and Dollar Tree or Dollar General. There's tons of free plans out there, things that aren't for beginners and things for the more advanced pilots. If you want a good amount of plans for free (with the option to purchase kits)- check out www.flitetest.com. I flew a Nutball for the longest time. They're easy to fly and they take a beating. As far as electronics go- check out Amazon. I picked up a set of 4 motor/ ESC sets for $30. They're more for multirotors, but they work fine on smaller foamies. I've seen cheaper receivers on Amazon, but you'd need your own transmitter. You can also pick up smaller 5-9 gram servos for cheap as well. Which are perfect for foamies. As long as you do the research, anything can be found cheap enough.

NazyaT10 months ago

u can give me the cm of this diagram plz my bro

sarvesh71 year ago

I am a starter guys, somebody pls tell me what is 'ESC' and 'radio' in this instructable

ESC = Electronic Speed Controller Radio = remote control The radio sends signals to your flight controller, the flight controller controls servos and is connected by a plug into the esc. The esc is hooked to the battery and flight controller unless it has more than one motor. The esc connects to the motor giving it the power it needs.

ashwintunga4 years ago
how much is the range of cost of making this
I guess somewhere around $400 dollars if you have to buy everything.

$400? No way! If you are a very beginner and have nothing yet to start in the hobby, this is +- what you gonna need: Transmitter and receiver $40, 3 servos $10, Esc $10, motor+ propeller $15, Lippo battery $10, few extra things $15. So around $100. All this you can find at ebay, hobbyking, banggood and many other online places.

what do u use to glue it together???
pva or hot glue gun?
Hot glue is not too heavy, as long as you dont overuse it.
David97 simonyu3 years ago
I would think that hot glue would be too heavy and pva on foam, too weak. I would buy a contact glue.
Oh man you did a great job i really appriciate you for this foam RC airplane ypour post is very helpful and this is great way to build an cheap Rc plane thanks for shairng this post.
tak145 (author) 2 years ago
For this size plane a mini servo works well. Approximately 11-15 grams
White_Wolf3 years ago
If you get a chance check out this guy's technique for using dollar store foam board.
With your talent with this foam you could do some awesome work with foam board. :0)
cillianm5646 years ago
I want to build one which material would be better balsa wood or foam
Foam is easier to fix, and if you ask me, more fun. A crash with foam means tape and glue. A crash with balsa wood means a full repair job.
Couldn't agree more. I love to build but I would rather fly than repair. A little tape or foam glue is hardly a repair and your up in three minutes. Although, Just for the sake of arguement, and to be fair, Balsa repair really is not as bad as some would think(for a minor crash), but it does end your flying for the day.
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