Announcement

Collapse
No announcement yet.

Component Failure...(Long read)

Collapse

Zenm Tech Pte Ltd

Collapse

Visit Zenmtech at rc.zenmtech.com

X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Component Failure...(Long read)

    This morning I made 3 flights and on the 3rd flight it ended in a crash. First 2 flights was fine and i was pretty much doing the same thing mentioned below.

    Components in used:

    AXI 2826/10
    Castle Creation Phoenix 45A ESC
    FP 2170 25C Lipo
    Futaba 149DP
    Futaba 9CAP

    I was about 4 min into the 3rd flight after doing 4-5 inverted flatspins (15 seconds vertical climbs at 80% throttle , downline rolls without throttle then snap into a inverted flat with full controls deflections).

    Then I went into normal cruise S&L and realised i cannot reduce power. It felt like it was at full throttle. All control surface were still function properly with not glitches just that cannot reduce power even with throttle at 0%.

    Flew till the LVC kicked in thinking i had regain control of the throttle, attemped a landing and upon landing the LVC eased off and the plane went into full throttle on ground. Unfortunately caused some cuts to the buddy who was guiding me.

    Checked the connections between the motor, esc and receiver and all were firmly connected. Nothing amiss about the radio settings too checked by another buddy. Reconnecting the components again and no issues controlling the throttle this time.

    Motor, esc, receiver, battery all were placed at least 7-10 cm radius of each other in the plane. I have used this setup for at least 10 flights in total before the fateful incident.

    Question now is what do you think went wrong? Anyway to ascertain if the components are still airworthy?
    Practice makes permanent. Perfect practice makes perfect.

    #2
    check the failsafe setting.

    I encountered this once when I set failsafe to have control over other surfaces but on FULL throttle instead....could it be set like this accidentally?
    TREX 500 ESP
    Futaba T12FGH

    Comment


      #3
      Originally posted by Art
      check the failsafe setting.

      I encountered this once when I set failsafe to have control over other surfaces but on FULL throttle instead....could it be set like this accidentally?
      Hi Art, fail safe was set to 20%. Would not have warrant a full power run. i need 50% to fly S&L. Would fail safe kick in for only 1 channel ?
      Practice makes permanent. Perfect practice makes perfect.

      Comment


        #4
        Interference maybe?
        Modded Esavage + 4S lipo + KB45 2300KV + HW150A
        Brushless Esky Lama with dual swash
        Esky Dauphin
        Walkera Lama 2
        Walkera 5G6
        Sparrowhawk XB + 2S lipo + 60A brushless esc + 6000kv motor.
        Brushless Mini LST + single servo mod
        Brushless Micro-T

        Comment


          #5
          Bro, sorry wat happen today.....why not disengaged the fail safe...maybe that's the main cause of the problem.

          Cheers

          Flying Without Wings

          Comment


            #6
            Originally posted by protyne
            Hi Art, fail safe was set to 20%. Would not have warrant a full power run. i need 50% to fly S&L. Would fail safe kick in for only 1 channel ?

            fail safe can be set to kick in for one or more channels...double check that la....looks like it to me..
            TREX 500 ESP
            Futaba T12FGH

            Comment


              #7
              Alfian, Art....bros to disengage means when rx loses contact with tx, it just remains at its last know setting? So if its at full throttle before signal lost it will remain at full throttle?

              Now its set to cut totally once it loses signal..

              Thks for advising!
              Practice makes permanent. Perfect practice makes perfect.

              Comment


                #8
                Originally posted by LittleGiant
                Interference maybe?
                Possible but I would think interference is maybe for a few seconds with some gitching? I was on full throttle power with all other control surface controllable by tx...
                Practice makes permanent. Perfect practice makes perfect.

                Comment


                  #9
                  Originally posted by durex
                  Bro, sorry wat happen today.....why not disengaged the fail safe...maybe that's the main cause of the problem.

                  Cheers
                  Feel more sorry for Will. Plane lost never mind as long as no injury and accident. But I failed to ensure that.
                  Practice makes permanent. Perfect practice makes perfect.

                  Comment


                    #10
                    Originally posted by protyne
                    Feel more sorry for Will. Plane lost never mind as long as no injury and accident. But I failed to ensure that.
                    Dont think that he was too upset about it .. after all he did stay there to fly his Yak after it happened

                    anyways i will have a medikit for our flying site in case this happens again. now all we need it a nurse in a miniskirt with a plunging neckline with VA-VA-VOOM assets... and i mean ASSETS

                    any volunteers?
                    -------------------
                    Powder, Anyone????

                    Comment


                      #11
                      Originally posted by Art
                      fail safe can be set to kick in for one or more channels...double check that la....looks like it to me..
                      is this how the futaba F/S works? didnt know it could operate for just a specific channel.
                      -------------------
                      Powder, Anyone????

                      Comment


                        #12
                        Originally posted by protyne
                        Possible but I would think interference is maybe for a few seconds with some gitching? I was on full throttle power with all other control surface controllable by tx...
                        Sometimes interference will only affect certain component in the set up. For e.g. my car gets interference (I think signal lost or weaken) at times. The servos will still work abit with some glitching but the car will set off at full speed until the fail/safe function in the esc kick in.
                        Modded Esavage + 4S lipo + KB45 2300KV + HW150A
                        Brushless Esky Lama with dual swash
                        Esky Dauphin
                        Walkera Lama 2
                        Walkera 5G6
                        Sparrowhawk XB + 2S lipo + 60A brushless esc + 6000kv motor.
                        Brushless Mini LST + single servo mod
                        Brushless Micro-T

                        Comment


                          #13
                          Strange thing, Charles did a check for Jon and we all realised the ESC was set to the lowest LVC (rendered useless) and thus LVC did not cut in. It does sound like some sort of a interference (internal or external?) since it went full power for a extended period of time, then it sets power at a low level, which Jon took the opportunity to slow the plane down and landed successfully. Just at touchdown, it went full power again

                          So this is telling me that something is telling the power setup to go full power, low power and then full power again. All this happened while Jon still have controls over the plane's flightpath.
                          Stop looking for a gyro in my plane, they are all in the head.

                          Comment


                            #14
                            On my JR, in the failsafe, my throttle is set at -220 as a default. And in your case it was set to 20% which on my transmitter it is more than half stick. This could be the problem in your case.

                            Maybe you should do a test. with the prop remove, re-set the failsafe setting to as it was when it went crazy.
                            Then move it 10% throttle. At this moment, switch off your transmitter and see what happen to your motor.
                            I think there is nothing wrong with your esc.


                            Did your control feel retarded when you were flying?

                            Your next task is to try to recall who else were on the field, and try to find out if there is a frequency clash. However, as you are still able to control the plane, then you may want to check your receiver or connection.

                            Originally posted by protyne
                            Possible but I would think interference is maybe for a few seconds with some gitching? I was on full throttle power with all other control surface controllable by tx...

                            Comment


                              #15
                              Curse of the Yak

                              Welcome to the club bro. It's the curse of the Yak la, the simplest and most acceptable diagnosis. Crashed mine too last week but i asked for it cuz i tried to be funny: did an almost full throttle while vertical dive for the first time, Yak refused to pull up and well f**ked the ground.

                              Comment

                              Working...
                              X