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Trainer Crash - Rebuild?

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  • Trainer Crash - Rebuild?

    I saw another thread about the Champ S+ ignoring the virtual fence...I had a similar issue with the GPS except this was for the holding pattern.

    I'll start off by saying I made the newbie mistake of reading the instructions once, thinking I understood it and then didn't read them again till it was too late. I have an old Champ (the yellow one) that I have thoroughly enjoyed, but for most of its flying days it has been held together with tape and sticks, due to my brother putting it into a tree on its second flight. I since then had torn the wings off a couple times, so it was crying for retirement. I enjoyed doing aerobatics in that model, so I looked for the next version up. I bought this trainer about a month ago, and only started flying it about two weeks ago due to weather and what not. One thing I noticed on its maiden voyage was that several times during the flight, it would apply full power, then up elevators till about 50-60 feet and then do some circles.

    Fast forward to the 4th flight, I was doing some aerobatics, circles, practicing coordinated turns and maintaining level flight. The holding pattern starts up. No big deal, I let it do its thing, then resume flying. I then start a shallow dive, a little bit closer to the ground than I'm normally comfortable but I'd done the same thing earlier without too much trouble. Except it decides that is a perfect moment to start the holding pattern. Before it managed to bring the nose up, it smashes it face first into the ground, ripping the entire front end off in the process.

    Discouraged, I went home and reread the quick start, and then looked at the manual. It clearly stated that holding pattern was only meant to be activated by a button press - not randomly, and I know I never pressed the button. I also learned there was a way to turn off the gps....which doesn't do me much good now.

    I will need a new fuselage, a new vertical stabilizer, and a new prop mount and spinner (amazingly the prop is still fine, it just separated from the rest of the plane. Same with the motor.) Which, isn't too bad but when all is said and done it'll set me back $30-$40 bucks. I've also contacted Horizon Hobby about it, explaining the software bug, but that was a few days ago now and I've heard nothing.

    It really comes down to two questions:

    1) Should I rebuild the same plane if they don't get back to me, and try to turn off the GPS? I'm worried since it's already a buggy board that it may ignore this.

    2) If not, how do you go about choosing a new controller board?

    Thanks guys!

  • #2
    If it's the Horizon Hobby Carbon Cub, then something is wrong with the control board maybe. According to the instructions (and I have one) the holding pattern feature can only be activated by pressing the bind button. It may have lost radio signal, can contribute to it crashing. My signal faded out one time in beginner mode. I panicked and put it in intermediate mode and it connected again.


    • #3
      Too many reports of the virtual fence failing and causing fly-aways. I'd disable it.
      FF gliders and rubber power since 1966, CL 1970-1990, RC since 1975.

      current planes from 1/2 oz to 22 lbs


      • #4
        Horizon Hobby offered to take it in to inspect it, so I'll do that but even if they send me a new one, I think I'll just disable it. Thanks guys!


        • #5
          Oh good. Cross our fingers they send you a new one. Good idea on disabling the gps. Hobby Eagle makes a nice gyro that's affordable. I use them in some of my planes. Especially on windy days.


          • #6
            My Cub has begun acting up with ‘spontaneous uncommanded maneuvers’ so the GPS has been deemed un-airworthy and is destined to exile.
            wanted to mention keep an eye out on Flea-Bay for damaged models, I have picked up a few NIB models that were damaged, to use for parts.


            • #7
              I removed the GPS unit and did a rebid, and all seemed ok. Range check was good so I took her up. Did the same loss of signal and no reaction to inputs. Fortunately it was up high and pretty much level flight. Got her back on the ground ok. So I yanked everything out, put in an Admiral RX (no gyro version) and will take her out this weekend.
              Anyone know where I can get the reciever and controller worked on? Hate to just trash it. Spektrum 6262 and serial RX, fyi.


              • #8
                Actually I just had a thought...(dangerous I know)
                could the upgraded ESC have something to do with this. I put in an eFlite 40 Amp when the stock one went OTS.