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  • #1

    BEC or No BEC

    Hi Gents,
    I have a 550E in build.
    The servos are 3x610's and a 650 and iv'e got Mini Vbar for it.
    Im running a 600MX motor on 6 cells.

    Can I run with a Life or Lipo battery directly to the Vbar?
    If I need to run a BEC what nominal and max current do I need.

    Many Thanks
    Cheers,
    Rich.
    Rich (sirricardo).

    Trex 250 Mini V-Bar, 300 motor, KST servos (smokin!)
    CopterX 450Pro - 3GX (reset in flight x 2 - grrr)
    Trex 500ESP - Spartan (on the shelf - too nice to crash)
    Trex 550 DFC Head Mini V-Bar (Too mean!)
    Tags: None
  • #2
    You can plug a LiFe pack straight into the vbar.

    There is one in the for sale section.
    x 3

    Comment

    • #3
      I have same set up bar the tail servo(620) and using 2100 hyperion life pack which fits nicely under the lipo tray,i use around 150-170mah per 5 mins flying.
      T- rex 600n V-bar
      Logo 550sx V-bar
      Logo 600sx V-bar
      Logo 600sx V-bar night flyer

      VBControl, but not the gay white version as i'm simply not gay enough to pull it off!

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      • #4
        Would this advice be transferable to the Beast X? I'm debating wether to use a CC BEC Pro like on my 500 or to use a Rx pack.
        Very proud to be an Align-Trex.co.uk Team Pilot!

        SAB        Goblin 700 / V-Bar Blueline 5.3 Pro
        Trex 600 EFL Pro / V-Bar Silverline 5.3 Pro
        Trex 500 FBL /         Beast X
        Futaba 8FG

        Proud Owner of 2 EGS Awards

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        • #5
          Yup, same advice...
          x 3

          Comment

          • #6
            I use a CC BEC Pro v2 on my 550 - I didn't like the idea of having to remember to keep the life pack charged. The BEC has been on there since last January and performs flawlessly

            Comment

            • #7
              What ESC are you using? Does it have a built in BEC? If so you should probably remove the positive wire from throttle lead.
              Member of Mk Heli Club



              GRAMMAR: The difference between knowing your shit and knowing you're shit!

              Comment

              • #8
                I'm using an ICE100 and have removed the red wire from the servo plug

                Comment

                • #9
                  Originally posted by jamiem View Post
                  I use a CC BEC Pro v2 on my 550 - I didn't like the idea of having to remember to keep the life pack charged. The BEC has been on there since last January and performs flawlessly
                  Hey.

                  Same for me, CC BEC PRO which makes the model so much more pick-up and go without havign to check Rx pack charge state. However, both setup options will work well.

                  I'm also on the CC ICE100, it's inbuilt BEC is of no use at all in powering the servos as they go all jittery and spektrum lights a flashing unless the ICE100's BEC was set to 5 volts output I found. Disable the red wire if using an ESC with inbuilt BEC as already mentioned.
                  .
                  Ian Contessa
                  Robbe SchluterUK / Midland Helicopters / Align



                  Coolice Power Supplies
                  Coolice Custom Built Charge Case's

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                  • #10
                    +1 Castle BEC Pro.
                    BIG BAD DOM
                    Compass 7HV, Compass 4926-510KV motor, AR7200BX, Castle Ice2 120HV, MKS BLS950/980 servos
                    Mikado Logo 600SE Uvular,                     Scorpion HK4035-330KV, Ikon flb, 12s setup
                    SAB Goblin 500, Quantum 4115-1200KV motor, AR7200BX, Kontronics Koby 90, MKS DS9670A+ servos, Align DS650
                    Eflite Blade 130X, 8000kv outrunner, all Lynx upgrades including DFC head

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                    • #11
                      Hi Guys,
                      Thanks for your help.
                      Blimey, the opinion is split here.
                      I guess it is just personal preference.
                      Cheers,
                      Rich.
                      Rich (sirricardo).

                      Trex 250 Mini V-Bar, 300 motor, KST servos (smokin!)
                      CopterX 450Pro - 3GX (reset in flight x 2 - grrr)
                      Trex 500ESP - Spartan (on the shelf - too nice to crash)
                      Trex 550 DFC Head Mini V-Bar (Too mean!)

                      Comment

                      • #12
                        It's exactly that, personal preference LiFe packs are a great solution on any machine; it avoids a regulator and thus reduces the number of points of failure. On the other hand you do have to remember how many flights you've had on one pack, and remember to charge it after use etc. These points are the reasons I choose to use a BEC on both machines I own

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