Announcement

Collapse
No announcement yet.

Atom 500 slow positive pitch

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
  • #1

    Atom 500 slow positive pitch

    been tuning my atom 500 for sometime now, after a new set of blades it now ballistic and solid.

    but have a strange issue on the pitch.

    On rainbows when you are pulling back with positive pitch it really slow pulling itself to the other end but when you want to complete the other end of the rainbow, that is to get it to the place it started from. its really really quick atleast twice the speed of the postive.

    now a positive climb out is ok, a bit slow. now flip the heli upside down and do an inverted climb out and it disappears really quick. so it cant be gravity :)

    the heli is FBL (compass head) and runs on Beastx, is set to pitch boost on solid blue.

    servos are Align DS510 but i doubt these are at fault as they are fine on negative pitch and even when going up on negative pitch. got the same servos on the Trex 500 and their i haven't got this problem.

    the helis is running 11 tooth pinion and 3000rpm on the head. it ballistic on the roll, flip & speed due to this but quite boggy on hard pitch moves . but again positive only negative seems to be ok. i get a sound change on the motor on tick tocs when doing the positive bit but no sound change on the negative side. and if to about 10+ ALE tic tocs in a row the motor really starts to bog. i have tried a 9 tooth pinion and things didnt change, i also tried a different motor same thing??

    the head is slick smooth mechanically both side

    i have the same setup on my Trex 500 with an RJX head same servos, beastx scorpion 1400kv motor. and i have none of these issue.

    seems like or expo problem on the beastx but why one side of the pitch only what is it, i am lost???

    help Please.....

    before i go swapping airframe (got a second full air frame) and beastx/Vbar...but it sounds electronic rather than mechanical
    Last edited by choppaholic; 03-02-2013, 10:57 PM.
    Trex 700N LE FBL
    Trex 600N DFC, OS 55HZ, Vbar
    Trex 600e FBL, 12s Scorpion 630kv, Vbar
    Trex 500e FBL, Scorpion 1400kv    , Spirit

    sigpic
    Tags: None
  • #2
    Atom 500 slow positive pitch

    Sounds like more - pitch than + to me. Have you checked pitch with a Rc logger or datum tool? I had a similar problem the other week on my E5 maiden because I had set 0% pitch with my Rc logger on what I thought was a flat part of the frame. I had -17 +7 so the same probs as you.
    sigpic
    7HV Kosmik 200 cool Neo BL9180 BL9188 pyro 750/56 comp
    6HV ultimate Helijive120 SK540 BLS351 BLS251
    Goblin 500 SK540 jive 100lv
    HD 500 SK540 jive 80 lv
    WARP 360 KOBY 55 SK720 MKS92a MKS95i
    Oxy 3 SK540 minijazz20





    Comment

    • #3
      why do you say - pitch. as on any negative pitch event heli disappears really quick. but slow on positive (stick above half i mean, if i have got it wrong).
      i used a Align digital pitch gauge. i too set the zero on a flat part of the frame. pitch is + & -12 at both side. you may be right may be my pitch is off but how do i check my zero?

      same pitch gauge never had a problem on other helis?
      Last edited by choppaholic; 03-02-2013, 11:15 PM.
      Trex 700N LE FBL
      Trex 600N DFC, OS 55HZ, Vbar
      Trex 600e FBL, 12s Scorpion 630kv, Vbar
      Trex 500e FBL, Scorpion 1400kv      , Spirit

      sigpic

      Comment

      • #4
        Atom 500 slow positive pitch

        Where are you zeroing the tool? That head has a flat spot on top? Zero it there. Then check again.
        sigpic
        7HV Kosmik 200 cool Neo BL9180 BL9188 pyro 750/56 comp
        6HV ultimate Helijive120 SK540 BLS351 BLS251
        Goblin 500 SK540 jive 100lv
        HD 500 SK540 jive 80 lv
        WARP 360 KOBY 55 SK720 MKS92a MKS95i
        Oxy 3 SK540 minijazz20





        Comment

        • #5
          just gave it a go, zero on the flat part of the head. on the bench its reading spot on + - 12. :confused:,:confused:,:confused:,:confused:,
          Trex 700N LE FBL
          Trex 600N DFC, OS 55HZ, Vbar
          Trex 600e FBL, 12s Scorpion 630kv, Vbar
          Trex 500e FBL, Scorpion 1400kv          , Spirit

          sigpic

          Comment

          • #6
            Atom 500 slow positive pitch

            Blades in line with boom? Sorry a silly question I know. Other than that I'm at a loss so maybe a beast x expert could answer
            sigpic
            7HV Kosmik 200 cool Neo BL9180 BL9188 pyro 750/56 comp
            6HV ultimate Helijive120 SK540 BLS351 BLS251
            Goblin 500 SK540 jive 100lv
            HD 500 SK540 jive 80 lv
            WARP 360 KOBY 55 SK720 MKS92a MKS95i
            Oxy 3 SK540 minijazz20





            Comment

            • #7
              [QUOTE=heathy;970829]Blades in line with boom? Sorry a silly question I know. Other than that I'm at a loss so maybe a beast x expert could answer[/QUOTE]

              Yes :(
              Trex 700N LE FBL
              Trex 600N DFC, OS 55HZ, Vbar
              Trex 600e FBL, 12s Scorpion 630kv, Vbar
              Trex 500e FBL, Scorpion 1400kv              , Spirit

              sigpic

              Comment

              • #8
                Re: Atom 500 slow positive pitch

                Don't know...but I would check my curves throttle and pitch.
                Raptor 50 v2, trex 600n fbl, trex 550 v2 3gx, trex 450 3gx v2, mini-titan v1, mcpx v1, WoT4 foamE, Gootch 450, mcpx bl.

                Comment

                • #9
                  just checked all curves are linear. throttle is a flat line have also tired governed and un-governed. any more ideas guys ?
                  Trex 700N LE FBL
                  Trex 600N DFC, OS 55HZ, Vbar
                  Trex 600e FBL, 12s Scorpion 630kv, Vbar
                  Trex 500e FBL, Scorpion 1400kv                  , Spirit

                  sigpic

                  Comment

                  • #10
                    Re: Atom 500 slow positive pitch

                    So your saying everything was good before you changed main blades?
                    Raptor 50 v2, trex 600n fbl, trex 550 v2 3gx, trex 450 3gx v2, mini-titan v1, mcpx v1, WoT4 foamE, Gootch 450, mcpx bl.

                    Comment

                    • #11
                      no. it was the same. i only change the blades as it was too aggressive on cyclic response on them so i went for a different set to calm things down. and get rid of some wobbles. the new set has made it rock solid and very crisp on cyclic.

                      one thought is may be its the way all atom's fly. the last time i had one i couldnt do all the things i can do now so i cant tell if its the way these helis.are also its not that slow but its slower than any of my trex but equal to them on neagtive pitch. i am being a bit an*l about it but i would like them to fly the same and i have a felling its something silly i have missed. some may say, why just get a trex instead if you want to it fly like a trex :) but it how i am :D
                      Trex 700N LE FBL
                      Trex 600N DFC, OS 55HZ, Vbar
                      Trex 600e FBL, 12s Scorpion 630kv, Vbar
                      Trex 500e FBL, Scorpion 1400kv                      , Spirit

                      sigpic

                      Comment

                      • #12
                        Re: Atom 500 slow positive pitch

                        It a strange problem. What blades are they fbl, symmetric or semi-symmetric?
                        Raptor 50 v2, trex 600n fbl, trex 550 v2 3gx, trex 450 3gx v2, mini-titan v1, mcpx v1, WoT4 foamE, Gootch 450, mcpx bl.

                        Comment

                        • #13
                          Symmetric blades first set was the 3D pro ones, now on Align 425D's. there are not FBL baldes. but as far as i know FBL blades make cyclic more stable but dont increase the pop/pitch effect. i got another set of ebay they are plain black don't know what they are but are fantastic blades, will give them a go soon.

                          again all my helis run on these 3 brands of blades for the last 2 years with good results.
                          Trex 700N LE FBL
                          Trex 600N DFC, OS 55HZ, Vbar
                          Trex 600e FBL, 12s Scorpion 630kv, Vbar
                          Trex 500e FBL, Scorpion 1400kv                          , Spirit

                          sigpic

                          Comment

                          • #14
                            Re: Atom 500 slow positive pitch

                            I was clutching at straws. If the throttle and pitch curves are a mirror image then the only thing left is the blades. If they were semi then the lift generated would not be equal. I can't think of anything else. Apart from try another set.
                            Raptor 50 v2, trex 600n fbl, trex 550 v2 3gx, trex 450 3gx v2, mini-titan v1, mcpx v1, WoT4 foamE, Gootch 450, mcpx bl.

                            Comment

                            Previous template Next
                            Working...
                            X