FRCFoamies Northrop YF23 600 Plans

Discussion in 'Scratchbuilding!' started by F1wanabe, May 28, 2015.

  1. F1wanabe

    F1wanabe Top Gun

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    maxresdefault.jpg
    The FRCFoamies YF23 is part of our 600mm/ 24 inch wingspan series
    of
    scale looking and flying planes and you can get it here:
    http://www.frcfoamies.com/old-pdf.html
    Due to the higher wing loading it is not necessarily a beginner plane but the performance on smaller power systems like the Heads Up 400 Zoom or
    Grayson Mjv3 is really good!

    Jay's Excellent YF23 video:



    Greg's YF23 with all moving surfaces:


    Feel Free to post your builds in this thread!

     

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  2. bimoadiprakoso

    bimoadiprakoso Top Gun

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    Yes! I'm definitely gonna move any further progress of my black widow, here.

    Thanks for creating this thread, Greg and Jay! :)
     
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  3. bogusbandit56

    bogusbandit56 Top Gun

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    I have one in my to finish and fly pile 005.jpg 002.jpg
     
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  4. bimoadiprakoso

    bimoadiprakoso Top Gun

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    So, seems like you will add rudder function on it, bogusbandit56. Cool!

    I made some mods to the original design, in order to have real nacelles just as the real one. Thinking about it, I made holes on the wing's plane inside each nacelles to avoid air blocking for the half upper prop airflow. Also adding a small holes in front of the nacelles to add more airflow to it.

    I put the ESC inside the plane, therefore, I added 2 holes covered but 2 pieces of plastic spoon cuts and functions as better grip when doing hand launch.

    Nose part, I unified 2 upper pieces into one, when cutting it. This allows me to have better and simplified assembling.
     

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  5. bogusbandit56

    bogusbandit56 Top Gun

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    I did cut the rudders but I have changed my mind now, I will tape them up. You may find NACA air scoops have less drag than spoons and they are efficient.
     
  6. bimoadiprakoso

    bimoadiprakoso Top Gun

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    So sad, I couldn't find NACA air scoop in indonesia :(

    However, I may not be able to continue to finish the black widow within the next week or two as I will be doing business trip. So, my black widow needs to wait til I come home :(
     
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  7. F1wanabe

    F1wanabe Top Gun

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    The Naca scoop is good, but at the speeds we are flying the benefits won't be worth changing what you've got bimoadiprakoso. I've used both and the nice thing about the Wendy's spoon is you can direct airflow exactly where you want it. I did that on my f18 v2 when I directed airflow right onto the motor mount which would start burning with the smjv2.
    The Naca duct starts being worth it once you get on 4s over 70 mph or if you have a super precise parkjet.
     
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  8. bogusbandit56

    bogusbandit56 Top Gun

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    Oh! I`m wrong again.
     
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  9. Airflow

    Airflow Top Gun

    Now... Greg, Jay this is a little confusing, thought it was a new version ( Mk2... kind of) of the YF-23, but it seems like the same old YF-23. Where is the old official FRC thread for this aircraft?
     
  10. F1wanabe

    F1wanabe Top Gun

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    We never had an official threads. We had a 600 mm thread but this was just before frcfoamies and before we had a place on rcpowers. This plane flies and looks so good it doesn't need a mark 2!
     
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  11. F1wanabe

    F1wanabe Top Gun

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    Not at all! I love nacas! I think bimoadiprakoso can do well with what he's got, then add nacas to the next one
     
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  12. pileit1

    pileit1 Ace Pilot

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    It looks like a NACA under the scoop.
     
  13. bimoadiprakoso

    bimoadiprakoso Top Gun

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    Yes, pileit1. I tried to copy naca duct shape, by cutting triangular form. However once, I saw plastic naca duct on my friend plane which he told me he got it abroad.

    So, no real naca duct/scoop on that yf-23 :) just naca triangular shape + scoop. Well, used to be part of party spoon/scoop. Hahaha :D
     
  14. bimoadiprakoso

    bimoadiprakoso Top Gun

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    Just saw some of my previous posts. Man! I should really read them before I posted any. Too much typos :D Sorry guys. Mostly, I'm using my mobile phone instead of my notebook.
     
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  15. bimoadiprakoso

    bimoadiprakoso Top Gun

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    Hmmm.....thinking about using 3d printer for the naca duct .....
     
  16. Airflow

    Airflow Top Gun

    Are you sure...I will make one ;-)
     
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  17. F1wanabe

    F1wanabe Top Gun

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    I know what you mean! It's so much more work to type every letter. And type it correctly!
     
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  18. bogusbandit56

    bogusbandit56 Top Gun

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    You can just cut the NACA duct shape, there`s no need to make one in plastic. It`s just like a goblet shape with a thick stem cut in the foam with the base of the stem attached and the rest pressed into the fuselage. 330px-NACA_submerged_inlets.JPG The good thing about NACA ducts, they produce very low drag.
     
    Last edited: May 29, 2015
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  19. bogusbandit56

    bogusbandit56 Top Gun

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    Don`t worry even I can`t understand my own threads most of the time.
     
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  20. F1wanabe

    F1wanabe Top Gun

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    This plane is actuasuper quick to build, Lars.
     
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