FRCFOAMIES SU-37 MK1

Discussion in 'FRCFoamies Plans' started by Boxermad84, Sep 15, 2012.

  1. apklug

    apklug Airman

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    OK guys I need a bit of input here. I am going to start building my first SU-3"5/7" and want a setup I can really slow down and exhibit maneuvers in some medium sized parks. It will likely have a Gaurdian gyro to help out based on the inputs on this post. Please comment on the following specs for me.

    1) It is better to fly with active canards (su37) or cut a little weight and forget the canards altogether (su35)? What will I really be able to do with the canards that I will not be able to without?
    2) NTM 2200 with a 7x5 mid-mount is my current plan ... Are there any compelling reasons to use rear mounting +/- dual motors?
    3) How big should I go with the wingspan .... I am thinking about 35 inches
    2) Gyro = 2D/3D Eagle Tree based on advice already given.

    Thanks in advance and will post some build / fly pics.
     
  2. Airflow

    Airflow Top Gun

    Decided to be safe than sorry .... Have modified my Maiden catapult to fit my super heavy Su-34 ... The plane hangs on two carbonfiber rods and slides easily.
    [​IMG]
    TV system is finished, windows will be glued, CG to be set, Guardian Stabilizer should be mounted and adjusted. etc. .. Maiden..... err... Weekend, Sea, Boats, Fishing, kids, summer houses, lawns ... and so on :)
     
  3. e3_Scott

    e3_Scott Top Gun

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    That is one beautiful plane, Airflow!

    Cheers,

    Scott
     
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  4. F1wanabe

    F1wanabe Administrator

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    Great nose job!

    youtube/gstrysky
    frcfoamies
     
  5. Airflow

    Airflow Top Gun

    Beauty or a beast, let see how she flies, hopefully..
    Thanks Scott!:)
     
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  6. Airflow

    Airflow Top Gun

    HaHa, so you saw it ... :p You have good eyes, Greg! Cheers and take it easy with your Alpha Jet in the night!
     
  7. apklug

    apklug Airman

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    Brilliant build! Now lets see it fly!
     
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  8. Airflow

    Airflow Top Gun

    Thank you. Apklug! I promise to get a shot of the first tour. I'm on vacation in two weeks, so stay tuned, because then I'll have a try.
     
  9. apklug

    apklug Airman

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    Hey Airflow ... I have been giving alot of thought to this build.
    Can you post a schematic / quick sketch of your receiver-gyro-servo hookup.
    I am interested to know what approach you are taking to achieve:
    * Elevons
    * Dual rudders
    * Spoilerons
    * Rudder Brakes
    * Is your canard going to get gyro input?
    * Are you planning on using any mixers?
     
  10. Airflow

    Airflow Top Gun

    Hi apklug! Just back from work...

    I'll draw a sketch for you, be patient for a while.
    Actually the setup will be the same as in my Mk2 Su. Works pretty well!
    Elevator instead of elevons, one servo for both rudders.
    2 servo for ailerons by a Y connector from the Guardian.
    Carnards connected to the elevator, mixed internally in my 9x. (Carnards without gyro)
    A knob on the radio disables the canards if I want to do it.
    I'm not using any external mixers, just by the radio.
    I have no need for spoilers, flaps or rudder brakes.
    My little Su-37 Mk2 flies wonderfully well with this simple setup ...:)

    No elevons, only one elevator, and the rudders are linked with a carbon rod as seen in the picture(2). This is the approach I will try out on my Mk1 Fullback


    My Mk2 after 150 flights! Keeps up so far! I only use the stabilizer when it's windy.
    [​IMG]
    A simple elevator - Linked rudders
    [​IMG]
     
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  11. gm3

    gm3 Top Gun

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    hey airflow is that the motor from the master parts list at hobbyking?
     
  12. Airflow

    Airflow Top Gun

    Quite right gm3!
    Turnigy D2826-6 2200kv

    This engine is my favorite, light, powerful for its weight, cheap and durable! And easy to get worldwide.

    [​IMG]
     
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  13. gm3

    gm3 Top Gun

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    does it have unlimmitted vertical for the su 37, and what is the weight of the su 37?
     
  14. Airflow

    Airflow Top Gun

    According to what I have measured 35-38 oz with a 6x4 APC Prop around 25 Oz with a 5x5 APC prop, my Su-Mk2 weighs 17 Oz ... Unlimited vertical ... O'yes! :-D
     
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  15. gm3

    gm3 Top Gun

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    sweet thanks
     
  16. Airflow

    Airflow Top Gun

    NP gm3 :) So what's your plan? An FRC Su-Mk2 Maybe? .. with that Motor?
     
  17. gm3

    gm3 Top Gun

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    yeah sadly i had found your post a little to late because i made a hobby king order and i ordered a different motor because i thought that the one on the master parts list was to week, this is the one i got,http://www.hobbyking.com/hobbyking/..._SK3_2836_1500_Brushless_Outrunner_Motor.html. i was thinking of puting it on a scratchbuilt stryker q or one of the v3 series aircraft but i will have to see when it gets here.
     
  18. F1wanabe

    F1wanabe Administrator

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    I have those rctimers and it is on Dan's su37 mk2 I just built. It doesn't produce more than 27 oz on 3s, 6x4. It will definitely not push the su37 vertical. But, it will push the mk2 vertical! Dan's mk2 is 18 oz. Gm3, where did you see those numbers. Those sound like ntm prop drive 2700 numbers.

    youtube/gstrysky
    frcfoamies
     
  19. gm3

    gm3 Top Gun

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    with regard to wich motor, the link i posted or the motor airflow used in his su37 mk2. and i meant to ask what was the weight of the MK2 not the origional, i should have specified.
     
  20. JettaManDan

    JettaManDan Administrator

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    we'll swap it out for the 450 zoom when you get here....i want some vertical lol
     
    F1wanabe likes this.
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