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  1. #1
    artesc all the way. artesc's Avatar
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    Chainring bolts slipping

    Ok, this is probably going to sound like a stupid question, but here it goes...

    I put a new chainring on; it is on a singlespeed crank and I got chainring bolts for a singlespeed. However, as I try to tighten the bolts down, the back (that holds the everything together and the female, threaded part) simply keeps on turning and doesn't tighten up to an acceptable tightness. I don't have a wide enough flathead screwdriver to hold it in place, I tried holding it with needle nose pliers as well as simply putting pressure on it with a regular screwdriver.

    How am I supposed to keep it from turning? Is there a special tool that's sold? I've searched, but I can't seem to find anything. Do I need new chainring bolts? Is there some trick to do it so I don't have to buy a special tool. What? Thanks.
    Last edited by artesc; 05-14-09 at 08:26 AM.
    "You win some, you lose some. All's you gotta do is win more than you lose and I'd say you're set."
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  2. #2
    My bike's better than me! neil0502's Avatar
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    Eight bucks will get you one of these ... at Harris Cyclery:



    We talking Shimano ... or ... what?

  3. #3
    surly old man jgedwa's Avatar
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    There is no good substutute for that little tool. They are all crap; made of stamped steel. But you need it.

    If the threads are all clean (thread and unthread them about 20 times each while watching TV to polish those threads), and greased, you can usually get them on without the tool. But it really is something you should have.

    jim
    Cross Check Nexus7, IRO Mark V, Trek 620 Nexus7, Karate Monkey half fat, IRO Model 19 fixed, Amp Research B3, Surly 1x1 half fat fixed, and more...
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  4. #4
    artesc all the way. artesc's Avatar
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    Hmm. Thanks; I suppose I will have to go get one then. Oh well, it's always good to have more tools right? Woo hoo!
    "You win some, you lose some. All's you gotta do is win more than you lose and I'd say you're set."
    -Surly Cross-Check
    -Kilo WT
    -Looking for: New Road Bike, NICE singlespeed/ fixed gear.

  5. #5
    rebmeM roineS JanMM's Avatar
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    Or, you could convert to hex key chainring bolts, such as found on Truvativ cranks. 5mm on the back, 6mm on the front.

    http://wheelsmfg.com/content/view/786/54/

    hmmm, no singlespeed listed.
    RANS V3 (steel), RANS V-Rex, RANS Screamer

  6. #6
    cab horn
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    Quote Originally Posted by jgedwa View Post
    There is no good substutute for that little tool. They are all crap; made of stamped steel. But you need it.

    If the threads are all clean (thread and unthread them about 20 times each while watching TV to polish those threads), and greased, you can usually get them on without the tool. But it really is something you should have.

    jim
    It's more important that any surface which the NUT resides is clean of grease. I'm not convinced "chasing" the threads in the manner you describe does anything. The last hundred chainring bolts i've tightened to spec, none have needed that chainring bolt tool.

    Hozan makes a spring loaded integrated hex key/chainring bolt tool that was meant for removing seized bolts (it fails at that) that is really nice to use.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  7. #7
    surly old man jgedwa's Avatar
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    [QUOTE=operator;8918642] I'm not convinced "chasing" the threads in the manner you describe does anything. QUOTE]

    If the threads are a bit rough to begin with (say, a burr where the thread starts), then it can do a little. But not much, to be sure.

    jim
    Cross Check Nexus7, IRO Mark V, Trek 620 Nexus7, Karate Monkey half fat, IRO Model 19 fixed, Amp Research B3, Surly 1x1 half fat fixed, and more...
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  8. #8
    My bike's better than me! neil0502's Avatar
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    Plus ... it's something to do ....

  9. #9
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    Quote Originally Posted by JanMM View Post
    Or, you could convert to hex key chainring bolts, such as found on Truvativ cranks. 5mm on the back, 6mm on the front.
    man those things are crap. run far far away, i just in the last week threw the ones off my sram red rings in the bin.

    you have an alternate to the tool. put a dab of 2 part epoxy like araldite on the backing plates to fix them to the crank arms. every ones of my track cranks are set up in this way, where you are frequently pulling rings on and off, also stops you dropping the backing plates.

    if you are going to glue, do it on stainless or cro-mo plates.

  10. #10
    cab horn
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    Quote Originally Posted by sideshow_bob View Post
    man those things are crap. run far far away, i just in the last week threw the ones off my sram red rings in the bin.
    And why is that...? They come stock on a lot of bikes with absolutely no problems.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

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