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Thread: Balsa Bashing a CAC Boomerang.

  1. #1
    No Artificial Sweeteners. kev.au's Avatar
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    Lightbulb Balsa Bashing a CAC Boomerang.

    This is a subject I have been working on for months now and I'm determined to make a start on this. My goals are to
    produce a scale-ish model of the CA 13 Boomerang around 1/7 scale with working flaps/retracts I also want a 3 blade prop.





    Power: Lipo/esc/motor combo is unknown at this stage(I want to swing a scale 3-blade prop).
    Retracts: I intend to use Eflite electric 60-120 size 90 degree units.
    Servos: All standard size, ailerons will be slim wing servos using a rotary drive system.
    Construction: Balsa and ply, built up cowl.


    I have designed a rudimentary model in Google SketchUp, the fuselage, horizontal and vertical stabilizers are able to be built but I still need to iron out a few issues concerning the wing.

    Click image for larger version. 

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    This is where I'm at as of right now, the fin and horizontal stab are almost complete. I will begin work on the
    rudder and elevators next:



    Last edited by kev.au; 22nd May 2017 at 08:35 AM.
    Håvard Støre : Sir I humbly bow down to your balsa bashing abilities!!.
    chicken sashimi : my T-Shirts are all 100% guaranteed to get you laid.
    Roberto : you're a legend Kev.
    ssassen : I bow humbly before kev.au's greatness.
    Danub : Sir I humbly bow down to your tree bashing abilities!!.
    MonZon : Damn, Kev you are gooooood!.
    R. Montiel : For sure the limiting factor is the earth curvature

  2. #2
    No Artificial Sweeteners. kev.au's Avatar
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    Skinned the top and bottom of the horizontal stab with 1.5mm balsa plus added the leading edge.



    Håvard Støre : Sir I humbly bow down to your balsa bashing abilities!!.
    chicken sashimi : my T-Shirts are all 100% guaranteed to get you laid.
    Roberto : you're a legend Kev.
    ssassen : I bow humbly before kev.au's greatness.
    Danub : Sir I humbly bow down to your tree bashing abilities!!.
    MonZon : Damn, Kev you are gooooood!.
    R. Montiel : For sure the limiting factor is the earth curvature

  3. #3
    Co-Pilot Håvard Støre's Avatar
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    Subscribed. Looking good Kev:-) I am excited

  4. #4
    No Artificial Sweeteners. kev.au's Avatar
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    Quote Originally Posted by Håvard Støre View Post
    Subscribed. Looking good Kev:-) I am excited
    I'm excited too!, this might be the first project I actually finish .
    Last edited by kev.au; 26th September 2017 at 03:22 AM.
    Håvard Støre : Sir I humbly bow down to your balsa bashing abilities!!.
    chicken sashimi : my T-Shirts are all 100% guaranteed to get you laid.
    Roberto : you're a legend Kev.
    ssassen : I bow humbly before kev.au's greatness.
    Danub : Sir I humbly bow down to your tree bashing abilities!!.
    MonZon : Damn, Kev you are gooooood!.
    R. Montiel : For sure the limiting factor is the earth curvature

  5. #5
    No Artificial Sweeteners. kev.au's Avatar
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    Got started on the elevator, was more time consuming than I had anticipated.... I still need to shape the inner
    balsa block and add some lightening holes.


    Håvard Støre : Sir I humbly bow down to your balsa bashing abilities!!.
    chicken sashimi : my T-Shirts are all 100% guaranteed to get you laid.
    Roberto : you're a legend Kev.
    ssassen : I bow humbly before kev.au's greatness.
    Danub : Sir I humbly bow down to your tree bashing abilities!!.
    MonZon : Damn, Kev you are gooooood!.
    R. Montiel : For sure the limiting factor is the earth curvature

  6. #6
    No Artificial Sweeteners. kev.au's Avatar
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    More work on the elevator:



    This is where I'm at with the wing, still need to figure a few small things out.

    Håvard Støre : Sir I humbly bow down to your balsa bashing abilities!!.
    chicken sashimi : my T-Shirts are all 100% guaranteed to get you laid.
    Roberto : you're a legend Kev.
    ssassen : I bow humbly before kev.au's greatness.
    Danub : Sir I humbly bow down to your tree bashing abilities!!.
    MonZon : Damn, Kev you are gooooood!.
    R. Montiel : For sure the limiting factor is the earth curvature

  7. #7
    No Artificial Sweeteners. kev.au's Avatar
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    I recently purchased a 50w ebay laser cutter so i've been learning how
    to operate that plus learning the software etc.. It's been fun and I have made some progress:


    80% of the fuselage formers have been cut plus a few wing components.


    Håvard Støre : Sir I humbly bow down to your balsa bashing abilities!!.
    chicken sashimi : my T-Shirts are all 100% guaranteed to get you laid.
    Roberto : you're a legend Kev.
    ssassen : I bow humbly before kev.au's greatness.
    Danub : Sir I humbly bow down to your tree bashing abilities!!.
    MonZon : Damn, Kev you are gooooood!.
    R. Montiel : For sure the limiting factor is the earth curvature

  8. #8
    No Artificial Sweeteners. kev.au's Avatar
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    Plus I now have retracts.

    Håvard Støre : Sir I humbly bow down to your balsa bashing abilities!!.
    chicken sashimi : my T-Shirts are all 100% guaranteed to get you laid.
    Roberto : you're a legend Kev.
    ssassen : I bow humbly before kev.au's greatness.
    Danub : Sir I humbly bow down to your tree bashing abilities!!.
    MonZon : Damn, Kev you are gooooood!.
    R. Montiel : For sure the limiting factor is the earth curvature

  9. #9
    No Artificial Sweeteners. kev.au's Avatar
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    I managed to cut all of the ribs for the outer left wing panel. The 2x dihedral braces and the first 3 inner ribs that connect to them are
    all 3mm ply, the rest of the ribs are 3mm balsa.





    Last edited by kev.au; 19th July 2017 at 10:04 PM.
    Håvard Støre : Sir I humbly bow down to your balsa bashing abilities!!.
    chicken sashimi : my T-Shirts are all 100% guaranteed to get you laid.
    Roberto : you're a legend Kev.
    ssassen : I bow humbly before kev.au's greatness.
    Danub : Sir I humbly bow down to your tree bashing abilities!!.
    MonZon : Damn, Kev you are gooooood!.
    R. Montiel : For sure the limiting factor is the earth curvature

  10. #10
    Co-Pilot Håvard Støre's Avatar
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    Wow! Such nice work:-) Do you have a link to the laser cutter?

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