FT Mini Speedster Depron Scratch Build as Kens CAD

I love scratch building, so when I saw Mr. Kens of CAD Models Article posted on November 13, 2014, I inmediately wanted to make the plane, making out of depron it would have the advantage of weight, and also I liked the idea of making the fuselage of one piece of foam just bending it.

First of all I needed to contruct a similar baking wing jig as the one shown in the picture of his post, that was easy to do out of wood and aluminum flashing, here are some pictures of mine:

You have to bake the wings in your home oven at 200 degrees F for about 10 minutes, preheating the oven and wing jig before at the same temperature. The wings came out perfect, the advantage is that the curvature of the undercambered wing is the one that you want to give according to the ribs that you make, and once is cooked it's permanent and very strong; anyway I glue a carbon fiber strip under the wing to give extra strenght. The other advantage of making this jig is that you can make another wing of different width and lenght for a different plane. 

If you prefer not to make the jig, there is an alternative, you can roll the depron over an appropiate tube by hand, if you search in youtube you will fine several videos showing how to do it, I have tried it with another plane and the result is good but not as perfect as this jig.

Regarding the fuselage, that it needs to be bended from one piece of depron, I made a modification that you can see in my pdf (plans)  of Mr. Ken's idea, because he suggested having a relief on one side of the fuselage, I tried that but with my poor experience in scratch building I couln't make the fuselange straight. So I move the relief to the back upper part of the fuselage, and for me it was much easier to bend and glue. Also in order for not heating the fuselage (I tried that and did'nt work for me) I cover the areas where I needed to bend with blue painters tape, then I did the bendings without cracking or breaking the depron. In all the project I used gorilla glue.

Here is the links to the plans for making it:

(the rest o the parts are the originals from the Filtetest plans)

Fuselage,

Left Wing

Right Wing

The specificatons are almost the same as Mr. Ken's model, mine is only 2 channel (aileron and elevator, no rudder)

Wingspan: 20.5"

Lenght: 17.75"

Motor 1811-2000Kv 10g from Hobbyking

Propeller: Gemfan 5030

ESC 6A Turnigy plush

Servos: HXT500

Receiver: Orange Rx R410X

Battery: 350mAh 2s

AUW 110 grams

Weight without landing gear 100.4 grams

 Another picture showing the battery compartment in the front and the carbon fiber strip under the wing.

Here are some pictures in flight

I consider that it's not a beginners plane, but with travel adjusted to 85% and 20% Expo in ailerons and 60% travel 20% Expo in elevator  it flies really incredible, stable an very agile.

Here are some videos

A Foam board wing in the jig

Already cooked and dry

Thanks for reading and greetings from Mexico, we are big fans of Flitetest.