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Mud/dirt/water guard caps for dual-hole cranks

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  • #16
    Maybe some plastic "Chicago Screws" would work?

    They'd need a wide enough head. The biggest I've found in 5 minutes of searching is 0.54" diameter. Here. I'm not sure if that's wide enough to cover the holes.
    Last edited by MuniOrBust; 2010-03-09, 05:05 PM. Reason: a

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    • #17
      Originally posted by MuniOrBust View Post
      Maybe some plastic "Chicago Screws" would work?

      They'd need a wide enough head. The biggest I've found in 5 minutes of searching is 0.54" diameter. I'm not sure if that's wide enough to cover the holes.
      Pedal threads are 9/16", which is about 0.56", so those are probably a tad too small. I think the 9/16" is to the outside of the thread though, so it might sit nicely on the edge if you're lucky.

      Rob
      "Hedgehogs - why can't they just share the hedge?" (Dan Antopolski)

      "I would absolutely recommend a 29er to anyone who didn't prefer a larger or small wheel." (Mikefule)

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      • #18
        Originally posted by MuniOrBust View Post
        Maybe some plastic "Chicago Screws" would work?

        They'd need a wide enough head. The biggest I've found in 5 minutes of searching is 0.54" diameter. Here. I'm not sure if that's wide enough to cover the holes.
        OOOOOO Sex Bolts
        "What doesn't kill you strengthens you, what kills you strengthens your mother"

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        • #19
          Sex bolts (never heard of "Chicago Screws" before) seem like they would be the most secure while being easier to remove quickly than a plug threaded for the entire length of the pedal hole.

          I just got my pair of dual hole cranks and think that I might just start carrying a stiff bristled toothbrush with my tools.
          My friends, love is better than anger. Hope is better than fear. Optimism is better than despair. So let us be loving, hopeful and optimistic. And we’ll change the world. - Jack Layton

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          • #20
            Originally posted by saskatchewanian View Post
            I just got my pair of dual hole cranks and think that I might just start carrying a stiff bristled toothbrush with my tools.
            Y'know, we should just let Sask answer questions from here on out. This is all that is really necessary before a pedal change... a swipe with a brush. Use a little WD-40 if you're really paranoid.

            Really, poking out the dirt with a stick? What, are we cavemen?

            As Rob said, they're coarse steel threads. You're gonna have to work to mess those puppies up. Some little piece of plastic isn't going to do balls to protect those from that miracle "rock just bashed my crank threads" UPD someone's worrying about.

            Sheesh.
            "The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt." - Bertrand Russell

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            • #21
              Originally posted by jtrops View Post
              What about a small section of old inner tube around the crank arm. Just slide it over the open hole and it will cover both sides. You might need to use a road bike tube to get a tight fit, but I don't see why it wouldn't work.
              I can't believe nobody has commented on this idea from jtrops. Quick and easy, no maintenance, light weight, and virtually free, and seems like it should be plenty effective. +1 from me, and I'll be putting some on mine for sure.
              My 29er is my little wheel. Roll it, baby!

              pLs forgve anu typist imak win positing forum my fone.

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              • #22
                Originally posted by uniShark View Post
                I can't believe nobody has commented on this idea from jtrops. Quick and easy, no maintenance, light weight, and virtually free, and seems like it should be plenty effective. +1 from me, and I'll be putting some on mine for sure.
                Haha, that idea only works on the *outer* hole; How would you slip it on if your crank is on the longest hole, leaving the *inner* hole exposed?
                Last edited by MuniAddict; 2010-03-09, 10:03 PM.
                Happy Birthday Terry! Every year you get cooler, younger and unicyclier!
                Be our muniprohpet for many years more.
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                • #23
                  Originally posted by MuniAddict View Post
                  Haha, that idea only works on the *outer* hole; How would you slip it on if your crank is on the longest hole, leaving the *inner* hole exposed?
                  Put it on before the pedal?
                  The mountains’ my playground, a place to unwind
                  Where negative thoughts are left far behind - Terry Peterson

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                  • #24
                    Originally posted by Hung Like Saddam View Post
                    Put it on before the pedal?
                    ok that makes sense, lol! I was thinking that one end was closed and slipped onto the end. There is one problem; the inner side of the cranks--at least the moments, are recessed quite a bit and when stretched snugly, the tubing would leave definite gaps, allowing water, mud, etc to get in. The outer side are a bit concave as well, but if the rubber tubing was tight enough it might seal it sufficiently.
                    Last edited by MuniAddict; 2010-03-09, 10:23 PM.
                    Happy Birthday Terry! Every year you get cooler, younger and unicyclier!
                    Be our muniprohpet for many years more.
                    -Dani Buron


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                    • #25
                      Here's a simple yet effective solution. perfect fit and seal. Quick on/off.
                      Click image for larger version

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                      You can use these nuts that stay tight.
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                      Last edited by MuniAddict; 2010-03-09, 10:47 PM.
                      Happy Birthday Terry! Every year you get cooler, younger and unicyclier!
                      Be our muniprohpet for many years more.
                      -Dani Buron


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                      • #26
                        Originally posted by MuniAddict View Post
                        Haha, that idea only works on the *outer* hole; How would you slip it on if your crank is on the longest hole, leaving the *inner* hole exposed?
                        Originally posted by Hung Like Saddam View Post
                        Put it on before the pedal?
                        Originally posted by MuniAddict View Post
                        ok that makes sense, lol! I was thinking that one end was closed and slipped onto the end. There is one problem; the inner side of the cranks--at least the moments, are recessed quite a bit and when stretched snugly, the tubing would leave definite gaps, allowing water, mud, etc to get in. The outer side are a bit concave as well, but if the rubber tubing was tight enough it might seal it sufficiently.
                        Yep, slip on before the pedal. Although I agree it wouldn't totally seal with Moments, but I'd probably just put a fairly long sleeve on there. My thought is not to try to totally seal it, because I think inevitably some water will get into anything, so a little air space will let it dry out. But should be enough to keep out any significant mud etc.

                        BUT, now I'm really liking the hardware store solution. Probably best to keep the threads greased a little in case some water does seep in. On the other hand, it may not be worth the extra weight for the bolt instead of the (as yet untried) inner tube solution. Hmm. I love this kind of dilemma!
                        Last edited by uniShark; 2010-03-10, 12:08 AM. Reason: typo
                        My 29er is my little wheel. Roll it, baby!

                        pLs forgve anu typist imak win positing forum my fone.

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                        • #27
                          super simple solution, at least for those of us in the countries where we can get non metric hardware.
                          Buy the right thread sized bolt in stainless steel, run it through the crank from the back side and cut the excess bolt flush with the crank..
                          Now when out on the trail you can break that bolt loose with the pedal wrench and turn it out with your fingers through the spokes or what works for you, and switch them to the other hole..
                          Being stainless solves the corrosion / water problem, and if you shop well you'll find bolts that will fit the pedal wrench.
                          Weight issues? Really? Seriously? I just weighed a similar bolt, 2 ounces. remove a sticker or two to make up for it or drink less beer / soda that day
                          In it's final look, does the deer forgive the wolf ?
                          If your not falling your not trying hard enough to improve yourself..

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                          • #28
                            Bar-end caps that have a screw built in so that when you tighten it, it expands inside the bar-end. This might just be the best option, and ready made if it fits!
                            Click image for larger version

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                            Last edited by MuniAddict; 2010-03-10, 01:33 AM.
                            Happy Birthday Terry! Every year you get cooler, younger and unicyclier!
                            Be our muniprohpet for many years more.
                            -Dani Buron


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                            • #29
                              Originally posted by pdc View Post
                              OOOOOO Sex Bolts
                              Yeah Chicago Screws and sex bolts are the same from what I've seen.
                              I didn't want confuse the people who use bolts during sex. This is the internet after all.

                              Originally posted by MuniAddict View Post
                              ok that makes sense, lol! I was thinking that one end was closed and slipped onto the end.
                              I think you just invented crank condoms.

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                              • #30
                                Originally posted by MuniOrBust View Post
                                Yeah Chicago Screws and sex bolts are the same from what I've seen.
                                I didn't want confuse the people who use bolts during sex. This is the internet after all.


                                I think you just invented crank condoms.
                                haha, it'll go with this!
                                Happy Birthday Terry! Every year you get cooler, younger and unicyclier!
                                Be our muniprohpet for many years more.
                                -Dani Buron


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