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Thread: FPVWRA Race Wing - Open source airplane

  1. #1
    Engineer for Jesus Christ IBCrazy's Avatar
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    FPVWRA Race Wing - Open source airplane

    This is the FPVWRA Spec Race wing. This project is open-source. Feel free to make your own or manufacture and sell this airplane if you like. The purpose of this plane is to promote competitive racing with an inexpensive aircraft that is fast and fun to race. Nobody likes losing to someone just because they have more money. And it is often the case that spec planes aren't any fun to fly. Not with this one. It happily flies 70mph on the spec motor and battery. Mine weighs in at 20 oz.

    Please Email me if you want the 3D files. FPVLAB will not let me post them... The text file is the Gcode from my CNC machine (FC6A 24X31"). Mind you that my machine is highly modified and uses a relay to power up a variac which heats the wire rather than using the internal transformer. I also use Rene wire and not NiChrome, so you might need to slow down the cut.

    I have attached a picture file of the airfoil for those who want to hand-cut their own. It doesn't need to be perfect, just close is good enough.

    This is a link to the motor. It is $11. Really cheap http://www.hobbyking.com/hobbyking/s...ner_Motor.html




    Specs on the airplane:


    Wingspan: 36" +/- 1"
    Airfoil: Naca 0014 or similar full symettrical
    Wing sweep: 12" +/- 1"
    Chord: central-9", tip - 6" +/- 1/2"
    Max thickness: 1.5"
    Minimum thickness: 1/2"
    Elevons: balsa or foam
    Material: EPP, fan fold foam, or EPS
    Motor: Turnigy 2210/2200kv
    Battery: 3s 2200
    Winglets: abs, coroplast, or foam.
    Servos and ESC: pilots choice
    VTX: 200 mW 5.8GHz
    Prop: pilots choice
    Spars: manufacturers choice not less than 1/2" behind leading edge.

    Please build and enjoy. Let's make wing racing a World wide competitive sport.

    If you wish to purchase these planes for your flying club as a group buy, I will sell them for $50 each for 3 or more airplanes. They come with foam, glue, wood elevons, laminate, spars, Dubro hardware, and ABS winglets.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Last edited by IBCrazy; 10th October 2016 at 09:55 AM.
    If it is broken, fix it. if it isn't broken, I'll soon fix that.

    videoaerialsystems.com - Performance video piloting

  2. #2
    Engineer for Jesus Christ IBCrazy's Avatar
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    Channel 1 (Wayne) has agreed to hot the files for the wing so you can download them directly:


    These are AutoCAD files of the layout and the winglets:

    http://matrixblackrock.com/VAS/Airplane%20layout.dxf


    http://matrixblackrock.com/VAS/spec%20wing.dxf

    These are the 3D files of the airplane wing cuts:

    http://matrixblackrock.com/VAS/wing%...oamelevons.skp

    http://matrixblackrock.com/VAS/wings...oodelevons.skp

    http://matrixblackrock.com/VAS/wingsecbatterycutout.skp


    This is a gif image of the wing section for you DIY hand cutters:

    http://matrixblackrock.com/VAS/Spec%...%20airfoil.gif


    This is the Gcode for the FC6A machine:

    Code:
    %
    g90
    (Bit Diameter: 0.125 Material Thickness: 1.0)
    (Generated from Sketchup File: 'wing section_wood_elevons_and battery cutout.skp')
    (AXIS,hide)
    ocall
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    g64g0
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    m5
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    (AXIS,hide)
    o
    call
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    m30
    Last edited by IBCrazy; 5th October 2016 at 10:10 AM.
    If it is broken, fix it. if it isn't broken, I'll soon fix that.

    videoaerialsystems.com - Performance video piloting

  3. #3
    I know it's the pilot's choice, but for those of us with more quad than plane experience, can you provide a prop recommendation? You mentioned 6" in the build video. I've got a bunch of DAL 6045. Will those work, or should I use something specifically for planes, like APC electric props?

  4. #4

    Awesome

    This is a really awesome project, thank you very much for making it open source, glad I came across this.

    I am very very new to hotwire cutting. I have tons of foam to practice on and some good quality epp.

    One question. Would you recommend using the pivot technique for cutting or just using a bow very carefully? Would be great to see this thread get active with different cutting techniques.

    Also is there any information on the FPVWRA itself? Guidelines and such?

    Quote Originally Posted by IBCrazy View Post
    This is the FPVWRA Spec Race wing. This project is open-source. Feel free to make your own or manufacture and sell this airplane if you like. The purpose of this plane is to promote competitive racing with an inexpensive aircraft that is fast and fun to race. Nobody likes losing to someone just because they have more money. And it is often the case that spec planes aren't any fun to fly. Not with this one. It happily flies 70mph on the spec motor and battery. Mine weighs in at 20 oz.

    Please Email me if you want the 3D files. FPVLAB will not let me post them... The text file is the Gcode from my CNC machine (FC6A 24X31"). Mind you that my machine is highly modified and uses a relay to power up a variac which heats the wire rather than using the internal transformer. I also use Rene wire and not NiChrome, so you might need to slow down the cut.

    I have attached a picture file of the airfoil for those who want to hand-cut their own. It doesn't need to be perfect, just close is good enough.

    This is a link to the motor. It is $11. Really cheap http://www.hobbyking.com/hobbyking/s...ner_Motor.html




    Specs on the airplane:


    Wingspan: 36" +/- 1"
    Airfoil: Naca 0014 or similar full symettrical
    Wing sweep: 12" +/- 1"
    Chord: central-9", tip - 6" +/- 1/2"
    Max thickness: 1.5"
    Minimum thickness: 1/2"
    Elevons: balsa or foam
    Material: EPP, fan fold foam, or EPS
    Motor: Turnigy 2210/2200kv
    Battery: 3s 2200
    Winglets: abs, coroplast, or foam.
    Servos and ESC: pilots choice
    VTX: 200 mW 5.8GHz
    Prop: pilots choice
    Spars: manufacturers choice not less than 1" behind leading edge.

    Please build and enjoy. Let's make wing racing a World wide competitive sport.

    If you wish to purchase these planes for your flying club as a group buy, I will sell them for $50 each for 3 or more airplanes. They come with foam, glue, wood elevons, laminate, spars, Dubro hardware, and ABS winglets.
    Last edited by photohap; 1st October 2016 at 12:08 PM. Reason: typo

  5. #5
    Engineer for Jesus Christ IBCrazy's Avatar
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    Quote Originally Posted by knight907 View Post
    I know it's the pilot's choice, but for those of us with more quad than plane experience, can you provide a prop recommendation? You mentioned 6" in the build video. I've got a bunch of DAL 6045. Will those work, or should I use something specifically for planes, like APC electric props?
    Dal 6045 would do. You might need to be conservative with the throttle if maneuvering constantly as the load in a maneuver is higher than flying flat out. However, it should be ok on the spec battery.

    -Alex
    If it is broken, fix it. if it isn't broken, I'll soon fix that.

    videoaerialsystems.com - Performance video piloting

  6. #6
    Engineer for Jesus Christ IBCrazy's Avatar
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    Quote Originally Posted by photohap View Post
    This is a really awesome project, thank you very much for making it open source, glad I came across this.

    I am very very new to hotwire cutting. I have tons of foam to practice on and some good quality epp.

    One question. Would you recommend using the pivot technique for cutting or just using a bow very carefully? Would be great to see this thread get active with different cutting techniques.

    Also is there any information on the FPVWRA itself? Guidelines and such?
    The guidelines on the plane are here. The FPVWRA was formed in response to the Drone Nationals. They will be hosting the Wing event in Worlds this year. The entire purpose is to protect wing racing.


    My best advice for cutting this wing is to check my RCG blog on hotwire cutting. You can in fact use a pivot style and it will work very well. David Windestal has a great video on it. Another method that works is to cut the top half of the wing and the bottom half separately using wooden guides and glue them together with spray adhesive. I have done this several times with great success. I am happy to supply wing cores if that's all people want as well.

    -Alex
    If it is broken, fix it. if it isn't broken, I'll soon fix that.

    videoaerialsystems.com - Performance video piloting

  7. #7
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    Quote Originally Posted by IBCrazy View Post
    The guidelines on the plane are here. The FPVWRA was formed in response to the Drone Nationals. They will be hosting the Wing event in Worlds this year. The entire purpose is to protect wing racing.


    My best advice for cutting this wing is to check my RCG blog on hotwire cutting. You can in fact use a pivot style and it will work very well. David Windestal has a great video on it. Another method that works is to cut the top half of the wing and the bottom half separately using wooden guides and glue them together with spray adhesive. I have done this several times with great success. I am happy to supply wing cores if that's all people want as well.

    -Alex
    I would be interested in a wing core, or even a kit to purchase from VAS

    Sent from my SM-G930T using Tapatalk

  8. #8
    Quote Originally Posted by IBCrazy View Post
    Dal 6045 would do. You might need to be conservative with the throttle if maneuvering constantly as the load in a maneuver is higher than flying flat out. However, it should be ok on the spec battery.

    -Alex
    If 6x4.5 is just ok, would going up or down in pitch be better? Maybe a 6x6 or 6x3? I read one guide that said it's best if props are 1/4 the size of the wingspan, but a 9" prop seems way too big for a 2200kv motor. Would a 7" prop be better? I just don't have a good understanding of fixed wing motor/prop sizing yet, so any advice you can provide is greatly appreciated.

    My VAS FPVWRA spec wing kit, ES08MAII servos, and EMAX 40A ESC (all from stoneblueairlines.com) should be arriving this week, along with the D2826-6 2200kv motor from HK's AR warehouse. I think I've got everything else already, so hopefully I can start building next weekend.

  9. #9
    [Flight Box]Low Class FPV slowjet's Avatar
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    APC 6x4 pulls about 30 amps on that motor. The motor gets pretty warm. I wouldnt prop it up any more. 6x5 was way too much for it.
    [Flight Box] - Watch, Cry, Subscribe.
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  10. #10
    Hey Alex, how much are you selling the wing cores for? I see SBA has the kit, but just need the cores

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