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Trex 700N, what pitch?

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  • Trex 700N, what pitch?

    as title, with 30% fuel and also, what sort of headspeed are you running?

    cheers,
    chris
    Chris 'CHUNK' Newby
    Trex 700E DFC_Align BL800MX_CC160HV_BL700H_BL750H_Spartan VX1n_Haiyin 5000mAh 12s
    Trex 700E DFC_Align BL800MX_CC160HV_BL700H_BL750H_Spartan VX1n_Haiyin 5000mAh 12s
    NAHC-Newton Abbot Heli Club, check out the website at WWW.NAheliclub.org.uk

    ALIGN-TREX.CO.UK team pilot
    LYNX team pilot
    SPARTAN team pilot
    Dx18

  • #2
    Plus and minus 13 degrees and 1850 idle up one, 1950 idle up two

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    • #3
      +/-12 @1950Rpm works well for me



      700N 700E 550E

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      • #4
        i forgot to mention, FLYBAR
        Chris 'CHUNK' Newby
        Trex 700E DFC_Align BL800MX_CC160HV_BL700H_BL750H_Spartan VX1n_Haiyin 5000mAh 12s
        Trex 700E DFC_Align BL800MX_CC160HV_BL700H_BL750H_Spartan VX1n_Haiyin 5000mAh 12s
        NAHC-Newton Abbot Heli Club, check out the website at WWW.NAheliclub.org.uk

        ALIGN-TREX.CO.UK team pilot
        LYNX team pilot
        SPARTAN team pilot
        Dx18

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        • #5
          Originally posted by chris jones2.4 View Post
          i forgot to mention, FLYBAR
          What is a Flybar ?
          Kel Velocity 50 sk-720 ,Fusion 50 v-bar pro 5.2 ,Velocity 90 v-bar pro 5.2 & JR DSX11 ,Phoenix and a fridge full of bottled water RCHA Courier Services PM for Details www.parcelshipper.co.uk and www.impactexpress.co.uk

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          • #6
            Do determine head speed, we need to know what engine you are running to find it's power band.

            Generally it's, 1850 for YS and 1950 for OS.
            x 3

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            • #7
              Every pilot has his own sweet spot for blade pitch Chris (thought you knew that already)

              I run 12 degrees each way but have tried as much as 14 degrees which was too savage for my ham fisted collective management.

              Its a fact I do like it very responsive around mid stick which make more sense having more pitch but with the current crop of FBL systems you can make it more snappy via the software "IE" Paddle Simulation and Pitch Pump.

              Back to the question asked I "heard" Jamie Robertson (Masters Winner) only runs 11 degrees, True or false I'm not sure.

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              • #8
                i normally run about +/- 11 but i just wanted to know what people were running as an average, i got a OS91SZh and it doesnt seem the most powerful thing ever :/
                Chris 'CHUNK' Newby
                Trex 700E DFC_Align BL800MX_CC160HV_BL700H_BL750H_Spartan VX1n_Haiyin 5000mAh 12s
                Trex 700E DFC_Align BL800MX_CC160HV_BL700H_BL750H_Spartan VX1n_Haiyin 5000mAh 12s
                NAHC-Newton Abbot Heli Club, check out the website at WWW.NAheliclub.org.uk

                ALIGN-TREX.CO.UK team pilot
                LYNX team pilot
                SPARTAN team pilot
                Dx18

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                • #9
                  The old szh is not a great engine by any stretch of the imagination. I ran 13 degrees on my 700 with 690 blades and at 1950rpm on a ys91 sr. I then changed to 710's and toned the pitch down slightly

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                  • #10
                    +/-12 here and 1900 idl2 on a YS91 but still getting a bit of bogging...
                    goblin BT700 havok (red)

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                    • #11
                      +/-11 over here on a ys91sr with loads of power.
                      Long live the flybar.

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