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    #1

    Clunk Line Tubing

    Hey guys...was changing out my fuel tubing for my Rappie when I saw something...I notice that when I flip the tank over to simulate inverted flight, the Clunk line does'nt touch the top, seem to just hang in mid-air...seems like it is too stiff. In this case fuel won't be able to reach the engine during inverted. Hence would like to check with you guys if you use different kinds of tubing from the Main for the the Tank?

    PS: I'm using the Blue color Silicon tubing that Rotor is selling.
    Tags: None
    #2
    I used blue Aerotrend tubing from Hobby Shack, works fine for me

    I cut the clunk to be very slightly longer than the stock length. Probably around 0.3-0.4cm longer.

    When i flipped the heli inverted, it dosen't seem to be touching the back of the tank too. However after a few flights, the tubing kind of softened up and it bends without kinking..

    Comment

      #3
      Dude dude dude....that blue color tubing is for outside the tanks. Go walk to the other side of the shop, where all the filter, diverter and nozzle is located. its all in japanese if i m not wrong. There u ll find a packet of fuel tube small and soft. i got some can pass to u for sample so u can get the right size. i ll try to take a picture of it when i get home.
      My Hangar:

      Heli 1:T-REX 450SE (Hughes MD 500)
      (SE-maiden 15/03/06)
      (XL-maiden 16/10/05)

      Heli 2:RAPTOR 50 TITAN
      (TITAN-maiden 16/06/2006)

      Heli 3:T-REX 500ESP (T-rex maiden 25/9/10)
      (FLASHER 500-maiden 08/10/2009 R.I.P:09/08/10)

      Heli 4:Flasher 250
      (maiden 13/09/2010)

      Airplane 1:GWS A-4SU Skyhawk For Sale
      Airplane 2:GWS P-40N WarHawk RAAF maiden flight 20/08/10 For Sale

      Transmitter:
      JR 9XII(XPS 2.4)
      Its all fun & games till the bills come..

      Comment

        #4
        Lucky...haven't tried to invert yet Thanks for the heads up.

        Originally posted by UH-1H
        Dude dude dude....that blue color tubing is for outside the tanks. Go walk to the other side of the shop, where all the filter, diverter and nozzle is located. its all in japanese if i m not wrong. There u ll find a packet of fuel tube small and soft. i got some can pass to u for sample so u can get the right size. i ll try to take a picture of it when i get home.

        Comment

          #5
          Er!!
          inverted it few times already!!
          im using them for my clunk line as well .. didnt know the blue tubing from rotor will stiffen up??
          Heli:
          . Quick Japan EP8 EX (A30-8XL+CC60+Gy401)
          . Raptor 50 Titan (OS50+522+CarbSmart+Gy611)
          . Trex 600 EP (1512/3D+CC110HV+DS760 w/8900)
          . Trex 600 N (RL53+523+CarbSmart+DS760 w/8900)
          . B/W Stratus (OS91 SZ+MP5+ATG+CarbSmart+DS760 w/8900+8717)

          Plane:
          . Ok Model Medallion
          . E*Star Storch
          . ElectriFly S.E.5a
          . Mpx EzGlider (Slope)

          Tx: JR 9XII

          Photo toy
          . Canon 7D & 500D
          . Canon 430EX & 580EX2
          . Canon 24-70 f2.8L
          . Canon 85mm f1.8
          . Tamron 10-22 ultrawide

          Comment

            #6
            just ask for the tubing from ah tuck...only one he has and never fails me...but have to change every 4-5 gallons
            TREX 500 ESP
            Futaba T12FGH

            Comment

              #7
              yah, get the aerotrend tubing from ah tuck... using it and no problems at all.

              Comment

                #8
                I must try out the Aerotrend fuel tube I have to change to clunk line after 2 gallon, if not, it will get soften n break in mid flight, got engine cut off 2 times due to clunk line broken , lucky no damage
                Tx : yet to know
                Heli : yet to know

                Comment

                  #9
                  The last time i change the lines was on the 31st of December. I think i kinda change them every 3 months.
                  My Hangar:

                  Heli 1:T-REX 450SE (Hughes MD 500)
                  (SE-maiden 15/03/06)
                  (XL-maiden 16/10/05)

                  Heli 2:RAPTOR 50 TITAN
                  (TITAN-maiden 16/06/2006)

                  Heli 3:T-REX 500ESP (T-rex maiden 25/9/10)
                  (FLASHER 500-maiden 08/10/2009 R.I.P:09/08/10)

                  Heli 4:Flasher 250
                  (maiden 13/09/2010)

                  Airplane 1:GWS A-4SU Skyhawk For Sale
                  Airplane 2:GWS P-40N WarHawk RAAF maiden flight 20/08/10 For Sale

                  Transmitter:
                  JR 9XII(XPS 2.4)
                  Its all fun & games till the bills come..

                  Comment

                    #10
                    Do you change the Clunk to something heavier? seems that the Sceadu one is heavier than the Rappie one...Did not have this issue with my Sceadu even though I use the same Blue color tubing..

                    Comment

                      #11
                      I am using the fuel line from rotor and also ntc, both only last me 2gallons only.

                      Everytime when I change the line to a new type, I just fly to 1/8-1/4 fuel level then hover inverted to watch if my header tank level is dropping, if it is dropping, it is not doing its job.

                      sigpic

                      Comment

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