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  • blade pitch

    Ok as no one seems to know the answer to my last thread can someone just tell me if both main blades need to be in sync right through the pitch range ? and if not what will be the outcome ....thx
    Twister 3d storm
    MCPX v2
    DX6i

  • #2
    if both are not showing the same pitch your blade tracking will be out
    Ron

    hobby-hangar.co.uk
    SWRCH-GO big or Go home!
    http://www.ultimatebuildandfly.co.uk/

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    • #3
      Thanks Ron , that would explain the wobble on spool up .
      Twister 3d storm
      MCPX v2
      DX6i

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      • #4
        yes and i find makes them viabrate too

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        • #5
          could one of you please recomend a way to get both blades the same pitch bearing in mind my crappy Thttp://www.heliguy.com/i/MANUAL-V2-WFLY.pdfX .
          Last edited by wilo76; 08-10-2011, 08:49 PM. Reason: link was wrong
          Twister 3d storm
          MCPX v2
          DX6i

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          • #6
            you wil need a pitch gauge bud to star with and do the final triming when you get in the air and see with tape on one of your blades

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            • #7
              Set it up on the bench first checking 0 pitch at mid stick on both grips/blades. Then spool up at the field and watch to see if both blades are in track. If they're not. Mark one blade grip, I use a spot of Tipex. Adjust only this blade one way or the other. A full turn. Spool up again and see if it's better or worse, if worse go 2 turns in the opposeite direction, if better there you go
              Humble owner of 7 Eddie Gold Stars and Ex - member of Mk Heli Club
              sigpic

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              • #8
                Originally posted by chrissy View Post
                you wil need a pitch gauge bud to star with and do the final triming when you get in the air and see with tape on one of your blades
                iv got a pitch gauge and know how to use it (thx to you guys on here) and know how to set pitch range . its just that when i get one side done and check the other side its out by a few degrees right through the range and if i try correct it then throws the first blade out ....arghhhhhhhhhhhhhhhhhhhhhh
                Twister 3d storm
                MCPX v2
                DX6i

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                • #9
                  Originally posted by wilo76 View Post
                  Ok as no one seems to know the answer to my last thread can someone just tell me if both main blades need to be in sync right through the pitch range ? and if not what will be the outcome ....thx
                  What was your last thread? Can't find anything, post a link and I'll see if I can answer
                  Humble owner of 7 Eddie Gold Stars and Ex - member of Mk Heli Club
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                  • #10
                    Originally posted by waveydavey View Post
                    What was your last thread? Can't find anything, post a link and I'll see if I can answer
                    http://www.rcheliaddict.co.uk/e-flit...xing-arms.html
                    Twister 3d storm
                    MCPX v2
                    DX6i

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                    • #11
                      Hello mate
                      provided your swash is level throughout it's travel, your TX is not (very) important for setting blade pitch.

                      First off, get the servos as close to 90 degrees as possible at mid stick in idle up.
                      Get all of the servo to swash links the same length.
                      Check the swash is level throughout its travel, preferably with a swash level tool.
                      At mid stick, with a level swash, set the links from swash to washout so the washout arms are horizontal.
                      Set the links from the washout arms to the flybar cage, so the cage is horizontal, and therefore the paddles are horizontal - 0 pitch
                      Set the links from swash to seesaw arms so the arms are horizontal, cage should be horizontal all around.
                      Set top links to same length as each other, and correct length to get 0 pitch on blades.

                      Assuming all of those are done, everything is level and equal, you should, in theory, have 0 pitch and equal pitch. If 1 blade is out then use the top links in small increments to adjust, but only adjust 1 blade, keep one as the reference.
                      Trex 600 ESP (Turnigy T600, DS821, DS620, GP750, 120A) sold
                      Trex 450 Pro
                      (MD933 DS520, BeastX, 40A HW, 450MX)
                      450SEV2
                      mCPX
                      Recycloquad (tm)
                      Flying Legends Spitfire (rest in pieces)
                      Edge 540 Foamy
                      AXN Floater Jet
                      MDC F-14 Tomcat
                      Depron BAE Hawk

                      DX6i, gt power a606, imax b6, A-6-10

                      http://www.youtube.com/user/PaulSouthport?feature=mhum

                      www.thedailymice.com

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                      • #12
                        Okay, it looks like your not setting the head up from scratch as PaulSouthport explains above.

                        last night while resetting pitch to factory settings on my t3ds i noticed that after i had set pitch up on one blade -3 / 7 /+11 the other side was not symetrical -7 / 0 / + 7 . and the only way i could get them any where near the same was to alter the mixing arm on the second blade which resulted in blade 1 being -3 / +5 / +11 and blade 2 being -3 / +4 / +10 . now i know i dont have the best TX in the world ( WFLY FT06-C) but are both blades supposed to be the same pitch right through ? and the way my TX alters pitch is via a dial that says PZT but there is another dial next to it that says PLZ that doesnt seem to do anything that i can see .also iv just fitted new main/spindel shafts and flybar so i know its not them throwing it out .

                        That's your other post. Forget about the Tx, it can't influence one blade over the other. You need to set your links symmetrically and the same as each other. What heli is it?
                        Humble owner of 7 Eddie Gold Stars and Ex - member of Mk Heli Club
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                        • #13
                          Its the twister 3d storm in stock form apart from a tornado ESC and blade 450 3d gyro . not bothered about IU settings just yet as im not at that stage yet .
                          Twister 3d storm
                          MCPX v2
                          DX6i

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                          • #14
                            If you set the links to the right length you will be ok unless something is damaged. You do have to get the lengths very accurate to 0.1mm. You'll need a vernier for this. The main thing is that there are (not two) but three pairs of links. One short pair and two long pairs. Each pair needs to be the same length. On some heads these links are fixed like the top two short ones on the Trex 450 Sport. The other three links are for the servos and just need to be adjusted to get the swash level, with the servo arms at 90 degrees to the links for centre aileron, elevator and pitch. The pitch settings need to be checked with the flybar level. You must also check that the swash stays level from full negative to full positive cyclic. This should be ok if the same throws are used on each servo and the same arm length.

                            On some helis, like the Blade 400 and the Twister Storm one of the servos is set to a different arm length and a different setting is used in the Swash Mix.
                            Last edited by cjcj1949; 09-10-2011, 05:38 PM. Reason: Counting error.
                            Flasher 450 Sport. Assan GA250 with 520 tail servo, MKS DS450 cyclic.
                            Multiplex Cockpit Tx, DX7, DX6i
                            Blade 130-X, MSR, MSRX
                            Phoenix Sim

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                            • #15
                              ok i have followed all input to the letter , leveled swash corectly and set all links using a vernier and set up servos at 90 degrees at half stick etc etc but one problem still remains . when i apply throttle and check swash level it differs from -10 to +10 and visually i can see that the swash falls slightly on one side when going through its full travel , so if i set up swash level at full stick for instance by the time i get to half stick there is a gap (about paper thickness) at one side .....hellllllllllllllllllllllp pls
                              Twister 3d storm
                              MCPX v2
                              DX6i

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