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Semi-stripped idle control cable threads- Loctite Blue or something else?

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  • Semi-stripped idle control cable threads- Loctite Blue or something else?

    The previous owner of my R* managed to cross thread the idle control cable socket on the carb. I know this because the first time I removed it a small curled aluminum shaving came out with the cable. Ever since then the knob has been *slightly loose right at the sweet spot*. So no matter how many times I set it, it eventually works it way out, dropping the idle by approximately 100 RPMs. I'm thinking of using Loctite Blue to keep it in place. But if I do, will I be able to adjust it later? I also considered Teflon tape too but thought it might get bunged up in the long threaded shaft.

    So what are your thoughts and or suggestions?

    Doc_V
    Last edited by Doc_V; 12-07-2018, 04:20 AM.

  • #2
    Click image for larger version

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ID:	49135 Try some plumbers pipe dope in a stick form, just thinking out loud here. It won't get hung up and will easily remove if you need to.https://www.amazon.com/PIPETITE-Stik.../dp/B0089807TE

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    • #3
      I wouldn't use locktite. If you think the threads are a little messed up Napa sells a thread repair product made by locktite called form-a-thread that might work. I've never used it but if it was mine and a tap/die didn't clean it up I would try it.

      https://www.napaonline.com/en/p/NCB28654

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      • #4
        Have you tried putting a nut on the male threads to relocate the sweet spot?

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        • #5
          Nothing you can do. The entire bike is wasted. Just throw the whole bike away and get another one.



          Comment


          • #6
            Originally posted by Doc_V View Post
            The previous owner of my R* managed to cross thread the idle control cable socket on the carb. I know this because the first time I removed it a small curled aluminum shaving came out with the cable. Ever since then the knob has been *slightly loose right at the sweet spot*. So no matter how many times I set it, it eventually works it way out, dropping the idle by approximately 100 RPMs. I'm thinking of using Loctite Blue to keep it in place. But if I do, will I be able to adjust it later? I also considered Teflon tape too but thought it might get bunged up in the long threaded shaft.

            So what are your thoughts and or suggestions?

            Doc_V
            Quick fix is to get a bit longer screw of smaller diameter,then put it into the idle screw hole using a nut on each side of the fastner to lock it tight after you set idle speed which is something i have done mult times over the yrs for same problem you posted.

            Could maybe try a next size up self taping screw.

            Another fix is to drill & retap to nex larger size screw.

            On your thought of using Red loctite it grips /holds very tight as i have had it do on fasteners with good non stripped threads you may be SOL if you ever have to adj idle speed again not being able to break it loose needing to drill it out so i'd rec not going that route coming from 1st hand negative exp with red loctite causing broken bolts or pulled out threads when breaking fasteners loose that had red loctite on them.

            Scott

            Comment


            • #7
              Definitely wouldn't use Red for this application. To clarify, It's the idle control knob. It's a long cable, with a knob on one end and threads on the other, so you can't really tap it or replace it with a screw.. If I did, it would be way more trouble to set than I care to deal with. There's a reason all carbed MCs have rider adjustable idle.

              Anyway, I thought about the blue, because I've used it in the past on the headlight bucket screws. After having several fall out, I finally put some blue on them and they've stayed snug while having no problem to remove and reinstall them later.

              Comment


              • #8
                Originally posted by Doc_V View Post
                Definitely wouldn't use Red for this application. To clarify, It's the idle control knob. It's a long cable, with a knob on one end and threads on the other, so you can't really tap it or replace it with a screw.. If I did, it would be way more trouble to set than I care to deal with. There's a reason all carbed MCs have rider adjustable idle.

                Anyway, I thought about the blue, because I've used it in the past on the headlight bucket screws. After having several fall out, I finally put some blue on them and they've stayed snug while having no problem to remove and reinstall them later.
                Blue loctite held the R* bucket bolts just fine on the 06 R* i used to have just fine,maybe you didnt get threads clean enough for proper adhesion or didnt get them tight enough to begin with or maybe didnt use enough loctite i dopnt know,but what i do know is blue loctite worked for me in same app.

                I am totally aware idle adj on carb'd r* uses threaded cable for ease of adj,BUT,when you have stripped threads that you want a quick fix for thats when what i suggested could work ok because you have to think out of the box or do something diff to hold stable idle like 1 of my suggestions was to do that would require taqking 4-5 mins to remove air cleaner to adj idle speed 1x-2x yrly because if you have to adj it more then that something is wrong.

                I had a carb'd 06 that always held nice stable idle idle speed only requiring idle speed & idle mixture adjustment 1x yrly at change of season from summer to fall when temps dropped significantly here in upper NY and that was it.

                Good luck.

                Scott

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                • #9
                  So I'm guessing the threads on the carb are bad?

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                  • #10
                    Yes it's on the carb, but it's not completely stripped, it seems as if only one turn of the thread was damaged. If I turn the idle up to say 1100-1200 RPMs, or down to 700-800 it will stay. it's just the sweet spot around 900-1000 RPMs that it works itself loose over time. It's not a major issue just a minor annoyance that I'd like to fix.
                    Last edited by Doc_V; 12-07-2018, 05:45 PM.

                    Comment


                    • Duke
                      Duke commented
                      Editing a comment
                      You might change length of the screw a little by grinding a little off the end and then polishing it. Or might try a very thin piece of solder jammed in the threads???

                    • Doc_V
                      Doc_V commented
                      Editing a comment
                      There's a thought... I'll have to ponder that one.

                  • #11
                    I would try Teflon tape or shove a cardboard match stick in before threading. Have you run a die or nut on the screw to clean the threads up?

                    Comment

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