Do what I say, not what I do

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  • BHChieftain
    Fast Electric Addict
    • Nov 2009
    • 1969

    #1

    Do what I say, not what I do

    So Chris and I are setting up our boats at the lake getting ready for a sprint. We get on the topic of connectors...

    ME:
    "So Chris, one problem with running bullets like I have is that sometimes guys inadvertently short out their lipos when hooking them up in series"

    BLAM!

    CHRIS:
    "You mean like that?"



    Here's the connector after just a split second short. I think I'll change my connection order to prevent this in the future-- I was connecting the two lipos together first, then connecting the lipos to the ESC (here is where I ended up connecting the other lipo leads together...).

    If I first connect the red lipo lead to the ESC then I can't end up with a short...

    Back to the soldering iron...

    -Chief
    Attached Files
  • supafastsupra2
    Senior Member
    • Aug 2008
    • 103

    #2
    I shorted out an 8s setup on a buggy conversion before. The bullet connector literally disintegrated, nothing left.

    Comment

    • Jeepers
      Fast Electric Addict!
      • May 2007
      • 1973

      #3
      thats what a "few" amps will do to you!!!

      been there done that a couple of times, it sucks!

      Comment

      • egneg
        Fast Electric Addict!
        • Feb 2008
        • 4670

        #4
        Did it yesterday and killed a cell on a 2S Elite 35C/5000. This really bummed me out as the pair was perfect for the UL-1 and I can't find a replacement.
        IMPBA 20481S D-12

        Comment

        • ED66677
          Fast Electric Addict!
          • Apr 2007
          • 1300

          #5
          use Deans!
          Emmanuel
          I'm french but I doubt I really am!
          http://pagesperso-orange.fr/pleindetrucs/

          Comment

          • kookie_guy
            Senior Member
            • Jun 2008
            • 897

            #6
            wow, that's pretty crazy.

            The way to posted is the way I connect mine in my BJ26.

            ESC red wire to one pack
            ESC black wire to other pack
            Jumper across the packs last

            Comment

            • BHChieftain
              Fast Electric Addict
              • Nov 2009
              • 1969

              #7
              Originally posted by kookie_guy
              wow, that's pretty crazy.

              The way to posted is the way I connect mine in my BJ26.

              ESC red wire to one pack
              ESC black wire to other pack
              Jumper across the packs last
              That'll keep you from shorting. The reason I don't like to do the jumper across the packs last is I get a pretty big spark that way. I like to connect the negtive lipo to the neg ESC as the last connection-- gets the most resistance before the final connection and the lowest spark.

              Anyway, now I connect the positive lipo to the positive ESC as the first connection which should keep me out of trouble...

              -Chief

              Comment

              • forescott
                Hopelessly Addicted to RC
                • Nov 2009
                • 2686

                #8
                How come I dont see any of you guys using ec-5 connectors. They are rated for 120 amps, and are made for dummies like me!
                Attached Files

                Comment

                • BHChieftain
                  Fast Electric Addict
                  • Nov 2009
                  • 1969

                  #9
                  Originally posted by forescott
                  How come I dont see any of you guys using ec-5 connectors. They are rated for 120 amps, and are made for dummies like me!
                  Ohh, I'm liken' that idea!

                  Comment

                  • Chilli
                    Fast Electric Addict!
                    • Jan 2008
                    • 3070

                    #10
                    I do the female bullet on the battery positive lead, male on the negative like many of us do, but still screwed up every once in a while. Thats because I always used black shrink wrap on all the connectors. As soon as I went to the red shrink on the positive leads, black on negative (controller and battery) I have never gotten close to a short.
                    Mike Chirillo
                    www.capitolrcmodelboats.com

                    Comment

                    • DINO7
                      Senior Member
                      • Jan 2009
                      • 162

                      #11
                      EC5 5mm connectors for me too..no heat and tight fit with no mistakes on hooking batts...
                      H&M Intruder S twin Leopard 36/74/3270 @ 3S-HIFEI 200A
                      MHZ mystic 114-TP4050 5D-HIFEI 240A hv ESC- @ 2 x 5S
                      BANDIT S"love boat" LEHNER POWERED.. RCFASTBOATS.GR MINI COOPER CAT

                      Comment

                      • 785boats
                        Wet Track Racing
                        • Nov 2008
                        • 3169

                        #12
                        I have a hydro where the batteries (2 x 2s) are right up under the front cowling & I have to reach up under there to plug the leads into the ESC. It's hard to see up there with my hands in the way. Once, after thinking I had hold of the red from one pack & the black of the other (to link them in series) I soon found out when I tried to plug them in that they were both from the same pack.
                        Just like you Chief, I was talking to someone at the time instead of paying attention to matters at hand.
                        Luckily the battery survived, as only the edges of the connectors touched but I had to replace both connectors. It was a tense 15 minutes waiting to see if the pack was going to swell or not.
                        Cheers.
                        Paul.
                        See the danger. THEN DO IT ANYWAY!!!
                        http://forums.offshoreelectrics.com/...hp?albumid=319
                        http://forums.offshoreelectrics.com/...hp?albumid=320

                        Comment

                        • JMSCARD
                          Fast Electric Addict!
                          • Mar 2010
                          • 3444

                          #13
                          I found the easiest way to keep from shorting out your connectors is just totally "slowing down" during the connection process.... the bullets are fantastically easy to use as long as you take the time to use them properly... I too have shorted my connectors... but after a couple times you tend to pay a little better attention:) keep the bullets....


                          Originally posted by BHChieftain
                          So Chris and I are setting up our boats at the lake getting ready for a sprint. We get on the topic of connectors...

                          ME:
                          "So Chris, one problem with running bullets like I have is that sometimes guys inadvertently short out their lipos when hooking them up in series"

                          BLAM!

                          CHRIS:
                          "You mean like that?"



                          Here's the connector after just a split second short. I think I'll change my connection order to prevent this in the future-- I was connecting the two lipos together first, then connecting the lipos to the ESC (here is where I ended up connecting the other lipo leads together...).

                          If I first connect the red lipo lead to the ESC then I can't end up with a short...

                          Back to the soldering iron...

                          -Chief

                          Comment

                          • sailr
                            Fast Electric Addict!
                            • Nov 2007
                            • 6927

                            #14
                            I think we have all done it at least once. My solution now is to pay attention. Don't be distracted! I agree that the pos/neg to the esc hooked up first is the best when running series!
                            Mini Cat Racing USA
                            www.minicatracingusa.com

                            Comment

                            • bigwaveohs
                              Senior Member
                              • May 2009
                              • 535

                              #15
                              Originally posted by forescott
                              How come I dont see any of you guys using ec-5 connectors. They are rated for 120 amps, and are made for dummies like me!
                              Those are what I use in my VS-1 and couldn't be happier!
                              I let the dogs out...

                              Comment

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