5.5mm Contacts vs. 6.5mm Castle Creations Contacts? Anyone have a compare picture?

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  • Darin Jordan
    Fast Electric Addict!
    • Apr 2007
    • 8335

    #1

    5.5mm Contacts vs. 6.5mm Castle Creations Contacts? Anyone have a compare picture?

    I'm getting ready to switch AWAY from the old style 6mm contacts that I've been using on all of my battery side ESC and Battery connections, over to the longer 5.5mm contacts.

    However, I was wondering about the Castle Creations 6.5mm contacts as well.

    Does anyone have the ability to take a post a picture of the 5.5mm and the 6.5mm contacts side-by-side?

    What I really need to see is what the grip-length is on the 6.5mm contacts. I'm trying to get away from the short grip-length on the 6mm's.

    Thanks,
    Darin E. Jordan - Renton, WA
    "Self-proclaimed skill-less leader in the hobby."
  • kfxguy
    Fast Electric Addict!
    • Oct 2013
    • 8746

    #2
    How bout this....

    32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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    • properchopper
      • Apr 2007
      • 6968

      #3
      Darin, Check this out

      Given that :

      Circumference ( C ) = 3.1417 X Diameter ( D ) ;

      and total contact area (TCA) while mated = C X Length (L)

      since the CC 6.5 mm male connectors have a 7.5mm long contact area ;

      C = 6.5mm X 3.1417 = 20.42mm

      Since TCA = C X L ; 20.42mm X 7.5mm = 153.16 mm squared contact area for CC 6.5 mm connectors


      Now, for 5.5 mm connectors :

      C = 3.1417 X 5.5mm = 17.28mm

      L = (for the "good" connectors) = 10mm

      TCA = C X L ; 17.28mm X 10mm = 172.8 mm squared contact area for 5.5 "good" connectors



      How 'bout that !


      T

      DSC05772.JPG
      Last edited by properchopper; 04-20-2014, 01:51 AM.
      2008 NAMBA P-Mono & P-Offshore Nat'l 2-Lap Record Holder; '15 P-Cat, P-Ltd Cat 2-Lap
      2009/2010 NAMBA P-Sport Hydro Nat'l 2-Lap Record Holder, '13 SCSTA P-Ltd Cat High Points
      '11 NAMBA [P-Ltd] : Mono, Offshore, OPC, Sport Hydro; '06 LSO, '12,'13,'14 P Ltd Cat /Mono

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      • boredom.is.me
        Senior Member
        • Jun 2009
        • 595

        #4
        And that's what a lot of people don't realize. Bigger isn't always better. You also have to note the contact with the wire though. You can't stick 8awg in a 5.5mm without clipping strands. I wonder if the connector wall thickness makes a difference between THESE connectors.

        Comment

        • ManuelW
          Senior Member
          • Oct 2010
          • 756

          #5
          Hey Darin,

          why do you want to go away from the 6mm connectors, do you have any issues with those? Or have the expectation with longer 5.5mm ones and bigger contact area you might have less Ri?

          Because this might be a false friend and the calculations from Tony are neat and well made on paper but in my eyes far away from reality. As a hint: Get a good permanent marker like this


          and completely color the contact area on the male one. Then plug/unplug 3-4x, on all areas with good contact the color must be removed. You'll be surprised how much colored area will be still there on cheap connectors.

          I'm using a 6mm bullet system supplied by a company in germany which is pretty cheap (converted ~$1.40/pair) but made great experience so far even in extreme applications like fast HPR 135 or HPR 233 electric.

          regards,
          Manuel

          Comment

          • srislash
            Not there yet
            • Mar 2011
            • 7673

            #6
            Originally posted by ManuelW
            Hey Darin,

            why do you want to go away from the 6mm connectors, do you have any issues with those? Or have the expectation with longer 5.5mm ones and bigger contact area you might have less Ri?

            Because this might be a false friend and the calculations from Tony are neat and well made on paper but in my eyes far away from reality. As a hint: Get a good permanent marker like this

            and completely color the contact area on the male one. Then plug/unplug 3-4x, on all areas with good contact the color must be removed. You'll be surprised how much colored area will be still there on cheap connectors.

            I'm using a 6mm bullet system supplied by a company in germany which is pretty cheap (converted ~$1.40/pair) but made great experience so far even in extreme applications like fast HPR 135 or HPR 233 electric.

            regards,
            Manuel
            Mmm, I may have to try this as I run 6.5's on all my batteries and 5.5's on the motor side. Then Darin will have his comparison. Going to shed now.

            Comment

            • Norwest
              Senior Member
              • Mar 2014
              • 165

              #7
              ///////
              Last edited by Norwest; 04-23-2014, 08:07 PM.

              Comment

              • Darin Jordan
                Fast Electric Addict!
                • Apr 2007
                • 8335

                #8
                Originally posted by Norwest
                Originally Darin mentioned the ability to pull the 6's apart without worry of damaging the wires due to pulling to hard.
                I don't remember ever saying that, actually... or it being a concern. Total contact area is what I was looking at.

                On 8mm contacts... pulling THOSE apart is an issue.

                OH, and on my stuff... I rarely see the use of 8-awg wires... I can get the 10-awg wires into my 5.5's, however, without any issue.

                If it were practical, I'd direct solder everywhere I could, but frankly, winning races sometimes means you have to MAKE the next heat, and replacing a motor or ESC between heats works out a lot better if you can disconnect.

                I'll have to go check out some of these other options. At the moment, the good quality 5.5's (The Castle Creation 5.5's, by the way, are short... OSE's are the long style, and come in two different barrel styles, so getting 8-awg wire in the 1/2 barrel style is actually possible if you are a little clever, without stripping any strands).
                Darin E. Jordan - Renton, WA
                "Self-proclaimed skill-less leader in the hobby."

                Comment

                • Darin Jordan
                  Fast Electric Addict!
                  • Apr 2007
                  • 8335

                  #9
                  Originally posted by ManuelW
                  I'm using a 6mm bullet system supplied by a company in germany which is pretty cheap (converted ~$1.40/pair) but made great experience so far even in extreme applications like fast HPR 135 or HPR 233 electric.

                  regards,
                  Manuel
                  Manuel... without pictures and a link, it never happened!

                  Let us have it! Cough up the goods, buddy!!
                  Darin E. Jordan - Renton, WA
                  "Self-proclaimed skill-less leader in the hobby."

                  Comment

                  • srislash
                    Not there yet
                    • Mar 2011
                    • 7673

                    #10
                    Originally posted by Darin Jordan
                    Manuel... without pictures and a link, it never happened!

                    Let us have it! Cough up the goods, buddy!!
                    I don't know about the link but here are pics of the test. I used a pair of the 1/2 barrel design 5.5's and a pair of 6.5 Castles



                    Rotated 180 degrees



                    And CASTLE (just for the charger)



                    Rotated 180

                    Comment

                    • boredom.is.me
                      Senior Member
                      • Jun 2009
                      • 595

                      #11
                      So srislash, were you able to come to a good conclusion? Pictures are one thing, but you actually have them in front of you.

                      Comment

                      • TheShaughnessy
                        Fast Electric Addict!
                        • Mar 2011
                        • 1431

                        #12
                        I just had a similar dilemma the other day. A good customer was getting ready to switch from deans to ec5 connectors. He was told they are really good connectors from someone else in the shop (and im sure they are). I accidentally talked him out of them, oops!? My problem with them is that they are essentially a 5 mm banana style connector with the little springs or whatever. So my feeling there is reduced Surface area when compared to the prong style bullet connectors.

                        For us boaters where series connections are common place, the ability to easily connect male and Female leads to combine batteries with minimal connections and wires is advantageous in my eyes.

                        That being said, the castle 6.5 mm connectors fall short in that department. Additionally a buddy of mine uses them in his 6s planes and I noticed they are fairly difficult to separate, especially in tight confines.

                        What I do like are the green protectors, but even that is a love hate type thing because they are pretty bulky.
                        Lastly is the cost. Maybe not much concern for Darin, who is likely getting a break on them. But even then, a lot of us have an extensive fleet and switching connectors could seem like an endless and daunting task not just because of cost but largely time.

                        I'm sure this will be sorted by tomorrow but I can get some pics tomorrow when I'm at the shop.

                        Comment

                        • ray schrauwen
                          Fast Electric Addict!
                          • Apr 2007
                          • 9471

                          #13
                          Take a piece of any wire, be it 10G or 8G wire. If it is stranded and not tinned it has and X value of cross sectional conductance. As soon as you tin the end of that wire it all changes, the cross sectional area decreases to the external surface of the whole piece of wire.

                          This is why I say 8mm bullets are a waste of time. Some people cam wrap their heads around this others just say I'm full of it.

                          So IMO as long as the connector is of decent quality, the diameter of the connector does not need to exceed the diameter of the wire once tinned.

                          TRUCKPULL aka Larry Jaques wins many races at his club in Florida and swears by Hobby Kings, AM-1005, 5.5mm connectors. I use them too and they do well by me. HK sells another 5,5mm plug that is plain crap.

                          Take a look at his videos of LSH and P-sport hydro, he is no slouch, nor are his boat setup.

                          Their are better connectors out there but, not for the price of the AM-1005's. HK also has some other very, very nice connectors that I will try very soon in higher amp boats. So far they worked very well in my 40" 6S mono, the XT150's. I don't use the bulky plastic case, just lots of heat shrink.

                          XT50's are big 6mm sprung gold connectors that have a large contact area, making them great for high power applications up to 250A!
                          The male connector uses a collet style spliced contact area to provide more surface to surface contact than standard gold connectors which use a thin mushroomed sheet as a spring.
                          Just my .02 worth.
                          Nortavlag Bulc

                          Comment

                          • kfxguy
                            Fast Electric Addict!
                            • Oct 2013
                            • 8746

                            #14
                            I remember when the best we had was deans...lol


                            I like the castle connectors. The ones with the green plastic around them. They work great for me. They are a little hard to pull apart which I see as a good thing. Means there's a good connection there. I personally don't think they are too bulky, but that's me. The only way they are bulky is in a smaller boat or vehicle. They aren't too big for my 26" cat.
                            32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

                            Comment

                            • srislash
                              Not there yet
                              • Mar 2011
                              • 7673

                              #15
                              Originally posted by boredom.is.me
                              So srislash, were you able to come to a good conclusion? Pictures are one thing, but you actually have them in front of you.
                              Well, they are fairly equal contact wise though the Castle have more pressure and take a bit to disconnect. Castle are also a larger diameter so that gives more surface. The 5.5's are only longer by a couple mm's. Like I said I run 6.5's throughout and see no reason to change.

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