First of all I would like to say thanks to flite test community for showing totally different perspective RC flying . Foam board RC is so much fun and rewarding at same time . I started building RC with FT with some scratch builds and kept working on my skills for more advanced planes . Recently I stumbled upon this paper model of BF-109 and it was just perfect , even this small model flies very well and thought I could just convert it into RC using foam board and I was totally blown away by what it turned out .
You can download the plans below , I couldn't find a tool to break this plan into tiles ,So I did it manually. took a screenshots of each section . (please feel free to share some better ideas if anyone is more familier with such tools) and printed at 245%.
This is how big it looks after blowing it up. which is roughly similar size of mighty mini models .
The fuselage looks very realistic, I tried to follow few foam-board bending techniques from master series and the result was astonishing.
Added some cardboard nose-top and also made front cannons which you can see in the final pic .for motor mount I just used standard mighty mini size power pod with some modification for nose .Also Since the top of the model looks really nice so I didn't feel like making to hatch to install battery from top , Instead I preferred making a small opening at the bottom . The fuselage holds its shape very well but you can add inner support as needed . I added some support to hold servos and receiver .
I sanded the inner edges of the wings to make them more streamlined .
I did some research on different color schemes and like this with yellow / grey / charcoal , which makes it really visible in sky .
I am running to on power pack-F with 850mAmps 3 - cell LiPo (6045 prop) I have also tried 4 cell and its so much fun . It looks very scale in sky and flies like a real BF-109 with high climb rate. I am going to try different combinations of motors on this model for more speed !!
It's one tough fighter , flying strong after three crashes !!
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I printed the images on paper and preparing to glue on the depron
Any info will be apreciated
Daniel
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Great build.
I wanted to ask about the wing and the way you created the aerodynamic shape.
Did you have a rectangular piece of foam ( for a fold over) inside and if so how did you decide on it’s size and position .
Same for the wing servos,how did you decide where to put them.
Also how you attached the tail fin .
Thanks
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Sorry for more questions but this has got me very excited!
Did you have some extra material at the bottom of the fin that sits inside the fuselage for extra support so it doesn’t move from side to side?
Also did you add anything across the centre of the wing to maintain the dihedral shape?
Finally (for now!) I am thinking of trying to fly these things as slow as possible ie scale speed and am building a 24 .6inch wing span version.
I do have these batteries needing a home
https://ftforumx2.s3.amazonaws.com/2021/04/364376_ce665e02503425aef96d154af1217a0c.jpeg
,not much juice but would it be enough with the right motor.?
Just found another of my old motors
https://hobbyking.com/en_us/vspec-motor-1808-2400kv-cww-0-2-laminations.html?___store=en_us
Is that a bit heavy at 29 g and the spec says it needs a 3s battery which would also add to the weight or could I use my homeless 2s.?
Ps rather than sanding wing edges could try using an iron,but practice on waste piece first!
Thanks
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Yes the fin is inserted in the fuselage and I also added BBQ skewers vertically to stop side-to-side motion .
I like to fly is fast so I used power pack-f with 850 mAmps 4 cell motor . I also observed some tip stalls when flying slow. So I recommend flying it fast . I just used hot glue and tape to keep the dihedral in place . and if you like to fly slow then you can increase the wingspan by an inch and add make your spar thicker so you have more aerofoil on the wing for more lift . Also you can make curved edges. I have also built a V2 of this which is much smoother and can fly fast well .
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