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  1. #1
    26r grudgemonkey's Avatar
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    When and where is it appropriate to use LOCTITE?!

    On a bike... where is it a good idea to use LOCTITE?

    The two places I would use it are:

    1. Disc brake attachment bolts
    2. B-Screw on dérailleurs

    Anywhere else seems unnecessary i my opinion. What do ya' say?

  2. #2
    Low car diet JiveTurkey's Avatar
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    operator had a good rule in another thread: use it on the threads of bolts that are not to be tightened fully.
    Quote Originally Posted by slopvehicle View Post
    Not wearing a helmet makes me more aware of my surroundings. I find myself anticipating the hardness of concrete 50 or 100 feet in front of me, it's almost a zen-like connection between my face and the pavement.

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    26r grudgemonkey's Avatar
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    Quote Originally Posted by JiveTurkey View Post
    operator had a good rule in another thread: use it on the threads of bolts that are not to be tightened fully.
    OK, that makes sense... now would you include bolts that close with locknuts?

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    Low car diet JiveTurkey's Avatar
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    Quote Originally Posted by grudgemonkey View Post
    OK, that makes sense... now would you include bolts that close with locknuts?
    Locknuts work by tightening against another nut or bolt, so they are tightned fully against each other; therefore, Loctite wouldn't be necessary.
    Quote Originally Posted by slopvehicle View Post
    Not wearing a helmet makes me more aware of my surroundings. I find myself anticipating the hardness of concrete 50 or 100 feet in front of me, it's almost a zen-like connection between my face and the pavement.

  5. #5
    Uber Goober StephenH's Avatar
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    How bout use it on stuff that keeps coming loose?
    "be careful this rando stuff is addictive and dan's the 'pusher'."

  6. #6
    Senior Member
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    loctite is pretty general
    loctite runs from keeping it from vibrating off to it ain't coming apart ever again (without heat) on small screws where you can't apply heat red loctite is permanate, blue you can usually get apart with wrenches if the bolt/screw is1/4/6mm or larger 222 purple is the handiest for keeping stuff from vibrating loose and common machine screw sizes

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    V-brake and canti attachment screws. Phil Wood BB cups. bk

  8. #8
    General Expert dinges's Avatar
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    Quote Originally Posted by plumberroy View Post
    loctite is pretty general
    Yes, I was reading the original post and about to write the same. Loctite... Which Loctite exactly ? "I have a red bicycle, what size tyre should I use?"

    I occasionally use 538. This will never come apart again, unless you heat it with a torch. And assuming you've *properly* cleaned the parts before applying Loctite. I.e. cleaning and degreasing properly. Without proper surface preparation you might as well not bother with the Loctite.

    It also depends a bit on the materials you're trying to bond. Steel is generally excellent with 538, aluminium is fine too. Nickel or nickel-coated materials are a bit iffy with 538. When in doubt, check the manufacturer's datasheet and application notes.

    The OP's question to me sounds he has a solution (flask of Loctite) but is looking for problems to solve with it.
    Smile... tomorrow will be worse.

  9. #9
    Senior Member DannoXYZ's Avatar
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    I usually use the blue stuff on spoke-nipples and crankarm bolts. Everything else on the bike has some locking mechanism like lock-nuts or lock-washers, so Loctite isn't really needed.

  10. #10
    26r grudgemonkey's Avatar
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    Quote Originally Posted by dinges View Post
    The OP's question to me sounds he has a solution (flask of Loctite) but is looking for problems to solve with it.
    Actually don't own any and don't plan on it either.

  11. #11
    Your mom
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    Derailleur pulley bolts. +1 to the "bolts that don't get fully tightened" usage. In other words, very rarely.

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    The blue version (242, I believe) has come in handy for me when attaching a bottle cage that kept working its way loose. Also, has anyone noticed the blue substance that coats the first 3-4 threads on new Campy crank bolts? Looks like a threadlocking compound to me.
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  13. #13
    Senior Member anti.team's Avatar
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    I don't think anything stronger than 222 (purple) is necessary for bike fasteners. It will keep things from working loose, but not stop you from loosening them on purpose.

    I bought a used campy rear derailleur from eBay, and when I got it the low limit screw was stripped out. I had to drill it and EZ-out it to get it out, and when I did it was coated in blue loctite. Definitely overkill.
    Quote Originally Posted by crushkilldstroy View Post
    99% of the world already thinks you're a moron for riding a bike anyways so it doesn't really matter what shoes you're wearing.

  14. #14
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    Blue loctite on adjustable stem bolts and or rear rack attachment bolts.

  15. #15
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    I have to wonder whether a lot of the bolts you see that come with Loctite pre-applied (e.g. brake fixing bolts, crankarm bolts, disc rotor bolts) are examples of engineering by the legal dept., or if it's really needed assuming you use adequate torque.

  16. #16
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    What bolts on a bike don't you tighten fully???Why have a bolt if your not going to tighten it,wouldn't a rubber band/string/duct tape work???

    I don't use any on my bike,but I use plenty of it at work(automotive machinist).
    Last edited by Booger1; 08-04-08 at 12:19 PM.
    Everything should be as simple as possible...But not more so.---Albert Einstein

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