Cannot tin TP Motor wires.

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  • IRON-PAWW
    Senior Member
    • Oct 2011
    • 314

    #1

    Cannot tin TP Motor wires.

    Hi all,

    This is driving me absolutely bonkers. I've soldered many many connectors and wires without issue up until this point. But I recently bought a TP motor (from OSE) and I simply *cannot* get the wiring to tin at all. Rosin core solder. 100watt iron with chisel tip. Bernzomatic brand solder. Lead free... silver bearing..... it's the solder I use for all my jobs without issue. Tried cleaning the wiring with alcohol, Bakers Soldering fluid.......even dipped the end in some lead acid I had to try that. No dice. Solder will not stick at all. What the Heck!!!!!!!!
    PERTH AUSTRALIA
    || 2 x SV 27R || Impulse 31 - ver1 || Traxxas Spartan || Kintec Pursuit || Zonda Cat 41" || Insane FE30 || OuterLimits 870mm || TFL Ariane 36" || ProBoat Zelos 48 ||
  • tlandauer
    Fast Electric Addict!
    • Apr 2011
    • 5666

    #2
    Hmmm... I just did two TP Motors w/o any issue, they came pre-tinned, aren't they?
    Too many boats, not enough time...

    Comment

    • IRON-PAWW
      Senior Member
      • Oct 2011
      • 314

      #3
      Yes they do come pre-tinned. However, in my infinite wisdom I decided to shorten the wires. When I tried to re tin the bare wires I just couldn't get it to go. Boy am I frustrated!
      PERTH AUSTRALIA
      || 2 x SV 27R || Impulse 31 - ver1 || Traxxas Spartan || Kintec Pursuit || Zonda Cat 41" || Insane FE30 || OuterLimits 870mm || TFL Ariane 36" || ProBoat Zelos 48 ||

      Comment

      • tlandauer
        Fast Electric Addict!
        • Apr 2011
        • 5666

        #4
        Ah, I did not want to be presumptuous, you need to physically remove the lacquer one strand at a time, like sanding them or using a knife to scrape the stuff away. That stuff is stubborn, that acid could not "eat" that stuff so easily. No amount of flux would do either. It's a known issue with all these motor wires that are a part of the stator. Castle Creation therefore specifically says " Motor wires can be shortened" because theirs are not part of the stator windings.
        Hope that helps.
        Too many boats, not enough time...

        Comment

        • IRON-PAWW
          Senior Member
          • Oct 2011
          • 314

          #5
          I was beginning to think it might be something along those lines. Thanks a lot tlandauer for that info. looks like I have some very tedious sanding to do. That will teach me. At least now I know why I was having so much trouble.
          PERTH AUSTRALIA
          || 2 x SV 27R || Impulse 31 - ver1 || Traxxas Spartan || Kintec Pursuit || Zonda Cat 41" || Insane FE30 || OuterLimits 870mm || TFL Ariane 36" || ProBoat Zelos 48 ||

          Comment

          • tlandauer
            Fast Electric Addict!
            • Apr 2011
            • 5666

            #6
            Good luck!
            Too many boats, not enough time...

            Comment

            • CKoz
              Junior Member
              • May 2014
              • 25

              #7
              Before you start sanding, consider trying acetone. Perhaps that can cut thru the laquer.
              What my wife doesn't know won't hurt me.... yet.

              Comment

              • siberianhusky
                Fast Electric Addict!
                • Dec 2009
                • 2187

                #8
                Dremel with a wire wheel.
                If my boats upside down then who owns the one I thought I was driving the last two laps?

                Comment

                • BHChieftain
                  Fast Electric Addict
                  • Nov 2009
                  • 1969

                  #9
                  Yes, the mantra is "never shorten motor wires". Only ESC side...
                  Chief

                  Comment

                  • T.S.Davis
                    Fast Electric Addict!
                    • Oct 2009
                    • 6221

                    #10
                    I wonder what happens if you dip them in muriatic acid. Anybody brainiacs out there know?

                    Wire wheel seems like the least traumatic to the wires. Just wish there was a better way.
                    Noisy person

                    Comment

                    • kfxguy
                      Fast Electric Addict!
                      • Oct 2013
                      • 8746

                      #11
                      Micro torch won't burn the lacquer off?
                      32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

                      Comment

                      • RaceMechaniX
                        Fast Electric Addict!
                        • Sep 2007
                        • 2821

                        #12
                        It's likely you have lacquered wires and the only way to remove it is by physical or chemical stripping. I have used a chemical varnish stripper ("dip strip") in the past, but it's very messy and takes several hours to accomplish. Also had to use it with a "hot bath" station like a solder cup. If you have a wire wheel (think Dremel size) lay the wire out flat on a hard surface and using the steel or brass bristle wheel abrade the varnish. You will have to rotate the wire and spread the wire out to strip enough varnish off. Add a little shrink to cover the silicon or sheathing so the wire wheel does not eat up the jacketing.

                        TG
                        Tyler Garrard
                        NAMBA 639/IMPBA 20525
                        T-Hydro @ 142.94mph former WR

                        Comment

                        • CornelP
                          Senior Member
                          • May 2009
                          • 745

                          #13
                          I do not know if the modern varnish is different, but with the older ones on transformers we used to lay the wire on an aspirin tablet, push it down with a very hot iron and voila! The fumes are not pleasant, so beware, but it worked. I have no idea what was happening chemically, but some of the old timers were using this method even instead of flux.

                          Comment

                          • tlandauer
                            Fast Electric Addict!
                            • Apr 2011
                            • 5666

                            #14
                            Ah , yes! The sweet smell of that old fashioned varnish ( lacquer) . As a young boy, I watched my dad build transformers for amplifiers and other radio ( vacuum tubes) equipments. I loved to see how the wires are brushed every layer on the winding jig. Gone were the good old days!
                            I wonder when this practice stopped in the USA, I was living in China at that time, ( before 1980) if you are into some kinds of hobby, then you need to make everything. I remember the first time I saw a Heathkit Catalog...
                            Sorry, drifting away from the topic...
                            Last edited by tlandauer; 06-04-2014, 03:28 AM.
                            Too many boats, not enough time...

                            Comment

                            • IRON-PAWW
                              Senior Member
                              • Oct 2011
                              • 314

                              #15
                              Thanks all for the info and help so far guys, I really appreciate it. I currently have an offcut of the motor wire sitting in acetone as a test..... no luck with that so far. Will leave it in a few days and see what happens. The Dremel wire wheel is the only method that's getting me anywhere so far. Very *laborious* work and is going to take *ages*. But I think it'll definitely work if I persist. You can definitely see the lacquer coming off the wire - you're left with the shiny metal of the wire strand rather than the darker lacquer colour. I'm halfway through the first motor lead. Frikkin *sigh* .... me and my big ideas.
                              PERTH AUSTRALIA
                              || 2 x SV 27R || Impulse 31 - ver1 || Traxxas Spartan || Kintec Pursuit || Zonda Cat 41" || Insane FE30 || OuterLimits 870mm || TFL Ariane 36" || ProBoat Zelos 48 ||

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