Ul1 running one lipo

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Bigboy5b
    Junior Member
    • Apr 2013
    • 3

    #1

    Ul1 running one lipo

    Does or has anyone run one 4s lipo instead of two 2s
  • Bastiaan
    Junior Member
    • Dec 2012
    • 7

    #2
    Yeah, I do.

    I use one 4s1p lipo: Robbe ZY 30C 4000mAh, fits perfect against the front of the boat.

    In combination with 40/3 prop about 5,5 - 6 minutes runnning.

    Bastiaan

    Comment

    • Bigboy5b
      Junior Member
      • Apr 2013
      • 3

      #3
      Ok. Thanks bastiaan. Where do u have your esc. Stock locale?

      Comment

      • Bastiaan
        Junior Member
        • Dec 2012
        • 7

        #4
        I use a swordfish 120A esc, but original works just fine for that.

        Original centre of gravity with 2s2p lipo's is about 3"-3"1/4 behind back of the sponsons, with one lipo you're going to shift the COG forward.
        With just one 4s1p, mounted sideways in/to the front, the COG is about 1,5" (38mm) behind the back of the sponsons,
        this should be the setting of them racing hydro's (to prevent to much lift @ higher speeds). Tough i never have problems with getting in plane.

        When i slide the lipo backwards, about 15mm (0,7") in front of the engine, the COG moves to about 2,5" behind the sponsons.

        I use a Tenshock 40mm 3-blade prop, with GPS i stated 78 km/h = 48 m/h, with horizontal strut @ 0,9".
        Last edited by Bastiaan; 05-29-2013, 09:34 AM. Reason: added original COG

        Comment

        • Jeremyfowler33
          Junior Member
          • Jun 2013
          • 13

          #5
          When you are talking about the horizontal strut where exactly do you get that measurement? I'm new to these boats and know nothing about them, I bought a turnigy 120a esc and running a 4s lipo sideways in front of the motor.

          Comment

          • Bastiaan
            Junior Member
            • Dec 2012
            • 7

            #6
            When you place your boat on a table, only resting on the tips of the pontons AND on the strut (not on the prop), is the vertical angle on the back of the strut exact vertical (thus your axle and prop horizontal).

            If you have questions about this, please read the main thread over this boat on this forum. They put it in better words than i can.

            If you have other questions i will try to answer it.

            Good luck, Bastiaan

            Comment

            Working...