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Thread: CompARF 2.9m MXS / GP176evo

  1. #1
    Senior Member tbrum's Avatar
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    CompARF 2.9m MXS / GP176evo

    Got into this project tonight! Designed for DA150 so the GP176evo should be insane!!

    Crazy cool design! All servos are placed at the center of the plane (at wingtube).
    * 2 servos ganged together drives long CF pushrod to elevator bellcrank
    * 2 servos ganged together for pull pull for rudder
    * 2 servos at each wing root ganged together

    Tons of CF

    Nice canister tunnel

    Seams finished and painted

    Cool strips on LE of ailerons
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    Last edited by tbrum; 11-08-2020 at 10:55 PM.

  2. #2
    Senior Member tbrum's Avatar
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    Re: CompARF 2.9m MXS / GP176evo

    First step tonight was to make up the proper thickness of hardwood donut stand-off.

    The standoff is a piece of birch and a piece of CF laminated plywood.

    22mm thick

    Will install motor tomorrow.
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  3. #3
    Senior Member tbrum's Avatar
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    Re: CompARF 2.9m MXS / GP176evo

    So thankful my wife wanted decorative posts in this house LOL!

    After lining up the motor/standoff/spinner to the cowl, I got the stand-off installed with a fillet of Hysol 9462
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    Senior Member tbrum's Avatar
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    Re: CompARF 2.9m MXS / GP176evo

    A few pictures of the GP176evo installed!!!

    Waiting on MTW exhaust order to arrive at Thunderboltrc.com, so will move on to other things next!
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  5. #5
    Senior Member tbrum's Avatar
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    Re: CompARF 2.9m MXS / GP176evo

    Oh ya... forgot to show the LG install. I reeaaaallly like this new design by CompARF... gear is held on with bolts that clamp down CF bars! So instead of breaking the fuse, these CF bars can break. Sorta like the BVM sacrificial flex plates on the Jets

    Airman 5Ē wheels!!

    Wheels pants are molded to fit around the gear legs.
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  6. #6
    Senior Member tbrum's Avatar
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    Re: CompARF 2.9m MXS / GP176evo

    Tailwheel is a Secraft Titanium unit.

    I inserted a hardpoint in the bottom of the rudder to anchor the steering spring
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  7. #7
    Senior Member JDaly's Avatar
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    Re: CompARF 2.9m MXS / GP176evo

    Nice Trev.

    This for yourself or someone else?
    Windy You Ask? Well I have White Caps on my coffee, you be the Judge!

  8. #8
    Senior Member tbrum's Avatar
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    Re: CompARF 2.9m MXS / GP176evo

    None of these are for me Jim... been running my same fleet for years now LOL

  9. #9
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    Re: CompARF 2.9m MXS / GP176evo

    Reworked the tail wheel steering.

    Mockingbird steering shocks and a hardpoint with a CF bracket to get the geometry right.
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  10. #10
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    Re: CompARF 2.9m MXS / GP176evo

    Rudder pull-pull is finished. 2 JR8911ís ganged together.

    Hopefully 1800oz-in is enough LOL

    Secraft pull-pull hardware from ThunderboltRc
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