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EMS Black Edition Arcus - rehab and refresh

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  • EMS Black Edition Arcus - rehab and refresh

    Just a quick "assembly" thread and place to store off a few photos as I refresh a gorgeous carbon Arcus. Plan is for it to fly at Black Dirt.

    Specs:
    Scale: 1:3.75 = 5.33 meter span
    Servos: Mostly Savox 1256TGs with Futaba 3172s on ailerons, and Hitec 7955TG on the SLS boom. 15 channels in total.
    Motor: Torcman 350-22, Jeti Pro Spin 77, 16x10
    Rx Power: 2x 2S 2250 mAh LiPo
    Motor Power: 2x 3S 5000 mAh LiPo (6S series)
    PowerBox Competition SRS
    2x JR DMSS Infinity receivers with 6 remotes in total
    JR 28x (will go over the CORE this winter w/ two 26D receivers)

    I've always loved the EMS products and in general have come to prefer the 5.3-6 meter span sailplanes. This checks all the boxes.

    It was originally imported from EMS in 2014 (complete build/servo/SLS install done by them), had a half dozen flights and has been packed away since. I spoke with Ralf at EMS about set-up of the plane, the SLS and powering the motor (could push it to 8S, but we'll start with his recommendation of 6S).

    It was the classic EMS pink (purple? Man- genta?) and black graphics scheme. Eeew. The cockpit was a rat's nest of wiring from the owner's power install and radio setup (Spektrum 9ch w/ +8 expander) and Emcotec switches all nested in a bundle on top of the retract. That all came out and PowerBox went in with all the wiring cleaned up. I refinished the cockpit pan and repainted the binnacles and refaced gauges.

    I'm getting more and more bored with white sailplanes! So, after seeing a full scale with circles on the nose for anti-collision, I decided to see how extensively I could abuse the circle concept. Callie was up for the idea. It's called "Emmental" (Swiss Cheese). And, I decided to take it over from D registration to HB. Who can guess why the reg number is 1183?

    Here you go. Radio and motor install done, graphics started...

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    2 Rx batteries go left and right in the nose.
    The motor batteries go beneath the seat pan side by side.
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    Team PowerBox Systems Americas... If flying were the language of men, soaring would be its poetry.

  • #2
    Wow...that looks fantastic. LOVE the livery on it...very nice! Hope to see it in the air soon.

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    • #3
      Final balance, SLS test and ready for Black Dirt Aero Tow...

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      Team PowerBox Systems Americas... If flying were the language of men, soaring would be its poetry.

      Comment


      • #4
        You have gone Dotty Steve
        That tail Cross is not in Compliance Sir
        Maybe if you removed one dot at the end of each bar, it could pass

        Jeremy
        SCCAAA TT TN

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        • #5
          A good lesson learned. Don’t get cocky when you’re low and downwind thinking you can scratch because eventually your SLS will save the day. The batteries have to agree that they have enough left!

          So, I managed to have an off field landing at Salem last month — with the SLS extended of course (or perhaps caught up in the doors which occasionally happens). I thought I killed the unit but today I dug in and took it all apart to find all I managed to do was bust the arm and subsequently jam everything up so it seemed like it was profoundly broken. It’s fine. Still not in love with how it all functions that has nothing to do with the latest incident rather its technological age.

          When life gives you plastic arms make metal ones. H9 to the rescue.

          PS This sailplane is a joy to fly! Loves the extra weight it carries. Highly recommended! Ralf will hook you up!

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          Last edited by Steve P; 07-11-2020, 10:58 AM.
          Team PowerBox Systems Americas... If flying were the language of men, soaring would be its poetry.

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          • #6
            SLS headaches, there seems to always be something going wrong with a sailplane's SLS system. That goes for full-scale too..hahah
            Please do a thread with tips on your vinyl work Steve, it's incredible!

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            • Steve P
              Steve P commented
              Editing a comment
              Yeah, like retracts don't offer us enough frustration and mental abuse. Let's add another whirling mess of dysfunction on top of the fuselage too! ;-)

          • #7
            Just using the site to store off a couple photos. These days the Arcus sports and EDF running on 12S. I had questions about how the EDF mounts without a firewall, but I can’t remember from who??

            The EDF mounts to the top of the retract. The rear mount goes over the rear crossbar of the retract and slides forward while the front clips into two studs added to the interior sides of the retract. Pop two simple clips and the whole unit slides out. One of the studs fell out at Cumberland (I flew it anyway) and once at home I reinstalled with threadlocker.

            Here, while upside down, you can see how the rear of the mount would key over the crossbar...

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            And the front attachments that go over studs and are secured with simple spring clips....

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            How one squeezes 12s into a rather tight fuselage. Three 4S 6000 mAh packs...

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            Last edited by Steve P; 03-31-2021, 11:42 PM.
            Team PowerBox Systems Americas... If flying were the language of men, soaring would be its poetry.

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