FPVwingman build

Hello guys,

(Note: This article is moved here from Rc-groups.)

I just started this thread to tell my story. The story is still in "writing" process, means it is not finished yet, but I will try to go through it till the end.

I started flying FPV some time ago, right after I started flying RC. FPV was the main reason I entered this addicted hobby.
I have flown different planes, hand build trainers, foamies, 3d planes, gliders (phoenix2000 still work like charm), and even the huge Bormatec Maja that didn't like so much. But all those planes had it's pros and cons, and the cons were more that pros.
The last plane that I came for was Bixler v1. Flies great and can carry easily a GoPro, but since I don't want to modify her too much there is a limitation with Bixler.

So the time came when I had to think about another plane, that will deliver a little more adrenaline, a little more speed, a little bigger payload - in 3 word - a little by all.

Surfing through the forums, youtube and other places where was information about FPV, I came to a conclusion that I must buy a wing, or build one :). Because most pilots use a wings for FPV and less use traditional tail planes.

The easiest way was to build FPV49v3, and thanks to FPVTron for his great plane and how to instructions. However, I only found depron sheets that were 1000mm width, and I had to scale it down to 1000mm wingspan, and it didn't work for me. Too heavy, and didn't glide at all, not to mention it was without FPV gear on it. Then I converted it to FPV49v1, but still had not enough success not to go further.

So I worked out I must build my own wing, with true airfoil, that will deliver high lift, and some speed, not to be very big to fit in my car.

After I have received some advice from Ruben(Thanks Ruben), who build his Juggernaut I started to draw.

From the start I wanted 1200mm wingspan, that was 2 wings of 600mm, but then I changed my mind to have an wide enough fuselage, so I have added 200m of fuselage, but didn't shortened the wings. 1400mm wingspan will fit in the car.

The Airfoil - I don't have too much experience with airfoils but was searching a lot and didn't found any that was recommended for a wing. That's why my choice dropped on MH61 which is asymmetrical and should be good for my needs, but I modified it to 5cm at it's thickest point to fit the batteries in the bay, so I don't know how it will perform. Maiden will tell.

The Airfoil was exported from Profiliv2 and imported in CorelDraw. There I modified it and printed the templates.

Later I realized that I should not cut the foam until the trailing edge but that was not a problem, I have striped  the trailing edge from fuselage and wings, but that lead to size modifications. The red plane is what I have now.

Total area of wing didn't changed too much and is 388 square decimeters.

Preparing the foam for fuselage. I cut 2 different fuselages, 200mm and 300mm wide, just in case and I want bigger wingspan, but I didn't like the look with 300mm and used 200mm as planned.

Then I started with the wings.
Preparing foam for two wings.

To be hones the wings was not so easy to cut from the start because my power supply was not giving enough voltage to hot wire and different profiles made my life a lot complicated. But after several unsuccessful attempts the final product comes out.

The wings were glued together with polyurethane glue. You call it Gorila Glue, but we call it PUR.

And the final glued wing looks like that.. and weight only 150 grams so far.

Today had some time to reinforce the wing. Didn't have plywood spars prepared therefore I decided to go for carbon. Let it be.

I don't have special weights, so I used what I have to keep the carbon in place while PUR is expanding/hardening.

Carbon in place and paint applied. Since this is my first painting job, it is not very accurate.

The motor is in place with a custom motor mount

And because I was in a hurry, I didn't make other photos on progress when I made the battery bay and electronics installation. I was in a hurry for the maiden 'cause weather was great for it.