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TREX 800 Trekker

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  • TREX 800 Trekker

    I thought some of you might like to see a few build shots of the Align 800 Trekker. This has been designed for two markets: One as a smooth flying larger version of their wellknown and successfull 700 and secondly as a camera ship.

    This one is being built as a display model for Alex, and is being fitted out with Aligns latest 5200 50c flight packs that are driving their latest top of the line MX850 Dominator 480Kv motor. To control this power house, is a Castle Creations Ice2 HV160 ESC.

    Power to the high voltage servos is going to supplied by a Gryphon Extreme regulator from RCheliGURU, that allows full LiPo power to the servos and a regulated supply back to the Gyro and the Receiver.

    The Heli uses a copy of the DFC 700e rotor head, but this is controlled through the use of belcranks and double linkages, rather than the direct linkage of the 700e DFC.

    The build and basic set up is very easy as most of the sub assemblies are pre-assembled, but don't get lulled into a false sense of security as none of the bolts are tight and all need removing and re securing with a touch of thread lock.

    To keep this heli in control it has been fitted with Aligns 3Gx gyro sporting the latest 3.1 version of the software. Setting the gyro up needs a PC; the 3Gx unit comes with a USB link and free software to enable the PC to talk to the Gyro to carry out the settings and upgrade the firmware as and when these are produced by Align. I have heard many complaints that Fly-barless controllers are difficult to set up, but by getting the mechanical settings right to start with and then following the intructions line by line, the process is quite easy. Once set the Heli can be tuned to match your flyingstyle, in a matter of minuets by using the PC software.

    In all this should take the average builder a week of evenings, with probablythe longest job doing the final setup.

    Peter
    Attached Files
    Last edited by miniman; 15-05-2013, 03:16 PM.
    Member of Milton Keynes model flying club

  • #2
    Alex first RCheliGURU team pilot to have an align t-rex trekker 800,
    M480L,M470,INSPIRE1pro, FACEBOOK
    Blade 180 cfx ,130x, jr 11x 14SG

    Canon eos 1d3, xa10,Garmin Verb, XCLUBFLIGHT

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    • #3
      Looks fantastic Peter, can't wait to see it in the air.
      Tron 7.0 advance Vbar evo V Control
      Foamy plank
      icharger 3010b, Coolice 24v psu
      Member of MK Heli Club and LMAC

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      • #4
        Weather and post permiting we will be down the field on Saturday

        Peter
        Member of Milton Keynes model flying club

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        • #5
          The 800 trekker is finished and maidened. Alex's first response was WOW comparing the Trekker to a slow fun fly machine to themanic craziness of the 700. The trekker can do everything the 700 can do, just slower and bigger. If your flight style isto fly large open 3D manoeuvres then the 800 is for you.

          Now we have had a few flights on the T-Rex 800e DFC we cansay it's AWESOME! Can't fault it or the new 3GX software at all and Alex said “I'd even go as far as to say (Opening can of worms now ) the v3.1 softwareis as good as any Vbar/BeastX I have flown!”.

          The new 850MX Dominator Motor is flawless! No bogging at all just total nonestop performance and Extremely economical combined with the new Align 780 3Gblades! We weren't totally sure what settings to go for with the newmotor/model combo so we had to test the water slightly we ended up with the following settings for anyone interested - Normal : 1650rpm , Idle 1 : 1850rpm,Idle 2 : 2000rpm and these seem pretty close to ideal.


          The first flights mainly used Idle 2 just to get used to the machine as it's a completely different ball game to the 700e but after 4 mins of medium 3D flight the Align 5200 50C packs were only down to around 30%.Considering the way Alex flies, getting the same flight times as we get from the 700e DFC with the 800MX motor, the new 850MX shows an economical use of thepower to hand.

          Most of the head settings were kept to standard, with the maximum head pitch of 12.5 degrees out of a maximum of 14. This was more than enough to give the Trekker exciting pitch pumping manoeuvres.

          Cheers for the support Jonathan Woodcraft at RCHeliGuru and KeithWallinger of Robbe Shluter without you guys this project wouldn't have been possible and thanks to Ian Contessa – Coolice for the top 3Gx set-up.

          We will get a decent video done within the next couple of weeks, now Alex hashis B cert is out the way and next weekend it's Zone! (He should have the 800with him if people want to have a look).
          Attached Files
          Last edited by miniman; 22-05-2013, 07:42 AM.
          Member of Milton Keynes model flying club

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          • #6
            Not the best of weather for making a video, with a phone, but it does show the capabilities of the Trekker.

            http://www.youtube.com/watch?v=e8mpw...&feature=share

            Peter
            Last edited by miniman; 30-05-2013, 09:46 AM.
            Member of Milton Keynes model flying club

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            • #7
              Click image for larger version

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              heres some pictures of alex trekker 800 zone fun fly
              Click image for larger version

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              M480L,M470,INSPIRE1pro, FACEBOOK
              Blade 180 cfx ,130x, jr 11x 14SG

              Canon eos 1d3, xa10,Garmin Verb, XCLUBFLIGHT

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              • #8
                What a beast love the sound the blades make in 3d
                Regards
                Simon

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