Hex chainring bolts -- out there?- Mtbr.com
Results 1 to 24 of 24
  1. #1
    Out spokin'
    Reputation: Sparticus's Avatar
    Join Date
    Dec 1999
    Posts
    9,659

    Hex chainring bolts -- out there?

    I have a set of chainring bolts with a traditional Allen head screw but a hex nut
    instead of the common but miserable big flat screwdriver type nut. The hex ones
    are awesome. They came on a crank I bought 2nd hand. Anyway, I want some
    more like them or dual-Allen head but SS-specific.

    I found these on AE Bike

    (Crank Bros. Cobalt chainring bolt set) but I see a couple of problems.
    First, there are only 4 screws/bolts in this set and my cranks have a
    5-bolt spider. Second, the nut looks like it's made for double ring
    applications, not SS.

    Can somebody point me in the right direction?

    Thanks,
    Sparty
    disciplesofdirt.org

    We don't quit riding because we get old.
    We get old because we quit riding.

  2. #2
    mtbr member
    Reputation:
    Join Date
    Aug 2007
    Posts
    4,667
    Well, I know both of my Truvativ SS cranksets have the allen head bolts, but both are long for a chainring and a bashguard. But they sell one ring cranksets so you might be able to find some that work. You want ~6mm ones

  3. #3
    blame me for missed rides
    Reputation: weather's Avatar
    Join Date
    Jan 2004
    Posts
    789
    well, grind em down...

  4. #4
    mudnthebloodnthebeer
    Reputation: quaffimodo's Avatar
    Join Date
    May 2004
    Posts
    585
    Quote Originally Posted by Sparticus

    Can somebody point me in the right direction?
    Sure. Over there...where the grinder is. Don't forget to use the side of the wheel to get a flat surface. Would you mind making me a couple of sets while you're at it?
    Also, the streets are full of horizontal dropouts...

    BSNYC

  5. #5
    CB2
    CB2 is offline
    Jam Econo
    Reputation: CB2's Avatar
    Join Date
    May 2006
    Posts
    4,214
    Quote Originally Posted by Sparticus
    I have a set of chainring bolts with a traditional Allen head screw but a hex nut
    instead of the common but miserable big flat screwdriver type nut. The hex ones
    are awesome. They came on a crank I bought 2nd hand. Anyway, I want some
    more like them or dual-Allen head but SS-specific.

    I found these on AE Bike

    (Crank Bros. Cobalt chainring bolt set) but I see a couple of problems.
    First, there are only 4 screws/bolts in this set and my cranks have a
    5-bolt spider.

    Can somebody point me in the right direction?

    Thanks,
    Sparty
    It's like hot dogs and hot dog buns.
    You need to buy 5 sets, so you have enough for 4 bikes!
    Don't have 4 bikes to use them on, send the extras to ME!
    I've ground bolts down too to make them work without a bash guard. With those it would be super easy because you could put the female side on a hex key to hold it against the grinding wheel.

  6. #6
    meh... whatever
    Reputation: monogod's Avatar
    Join Date
    Feb 2006
    Posts
    5,306
    truvative makes a set with 5 per pack for a couple bucks less than the cobalt.

    "Knowledge is good." ~ Emil Faber

  7. #7
    Out spokin'
    Reputation: Sparticus's Avatar
    Join Date
    Dec 1999
    Posts
    9,659
    Quote Originally Posted by monogod
    truvative makes a set with 5 per pack for a couple bucks less than the cobalt.
    Thanks. The AH pocket on the nut looks pretty deep... do you suppose by the time I ground those down (for SS use) adequate threads would remain? Hmmm... $25 plus shipping...

    Wish I could find some more of these...

    --Sparty
    disciplesofdirt.org

    We don't quit riding because we get old.
    We get old because we quit riding.

  8. #8
    mtbr member
    Reputation:
    Join Date
    Jun 2004
    Posts
    184
    Sparty, I remember seeing this setup before. Anymore pics? Is the rear spider setup still available anywhere? TIA

  9. #9
    meh... whatever
    Reputation: monogod's Avatar
    Join Date
    Feb 2006
    Posts
    5,306
    Quote Originally Posted by Sparticus
    Thanks. The AH pocket on the nut looks pretty deep... do you suppose by the time I ground those down (for SS use) adequate threads would remain? Hmmm... $25 plus shipping...
    take 1mm off each side on the grinding wheel. you can also use loctite "just to be sure".

    i can get you a set for $20 shipped.
    "Knowledge is good." ~ Emil Faber

  10. #10
    Out spokin'
    Reputation: Sparticus's Avatar
    Join Date
    Dec 1999
    Posts
    9,659




    I got mine from Spicer Cycles several years ago. Another version is also available from Spicer.

    --Sparty
    disciplesofdirt.org

    We don't quit riding because we get old.
    We get old because we quit riding.

  11. #11
    mtbr member
    Reputation:
    Join Date
    Oct 2005
    Posts
    2,721
    Quote Originally Posted by monogod
    take 1mm off each side on the grinding wheel. you can also use loctite "just to be sure".

    .
    Cool I did not even know this things exist, but for sure they makes perfect sense..

    You can also use Safety wire to prevent any trouble.

  12. #12
    Out spokin'
    Reputation: Sparticus's Avatar
    Join Date
    Dec 1999
    Posts
    9,659
    Quote Originally Posted by monogod
    take 1mm off each side on the grinding wheel. you can also use loctite "just to be sure".

    i can get you a set for $20 shipped.
    Thanks, Monogod. Take a check?

    --Sparty
    disciplesofdirt.org

    We don't quit riding because we get old.
    We get old because we quit riding.

  13. #13
    Out spokin'
    Reputation: Sparticus's Avatar
    Join Date
    Dec 1999
    Posts
    9,659
    Quote Originally Posted by patineto
    Cool I did not even know this things exist, but for sure they makes perfect sense..

    You can also use Safety wire to prevent any trouble.
    I followed the link in your sig to your motorcycle bike rack. Pretty cool.


    Here is my friend Bob's setup (click for larger photo):


    Looks like you guys even ride similar motorcycles.

    --Sparty
    disciplesofdirt.org

    We don't quit riding because we get old.
    We get old because we quit riding.

  14. #14
    mtbr member
    Reputation:
    Join Date
    Sep 2005
    Posts
    28
    Yes, Truvativ is the way to go. I just received these http://www.jensonusa.com/store/produ...+Bolt+Set.aspx and I could not be happier. Steel bolts with an alloy spacer for a single ring setup; 6mm back and 5mm front.

    truvativbolt.jpg

  15. #15
    Out spokin'
    Reputation: Sparticus's Avatar
    Join Date
    Dec 1999
    Posts
    9,659
    Quote Originally Posted by SSchmoe
    Yes, Truvativ is the way to go. I just received these http://www.jensonusa.com/store/produ...+Bolt+Set.aspx and I could not be happier. Steel bolts with an alloy spacer for a single ring setup; 6mm back and 5mm front.
    Thanks. At $8.50 this looks like the way to go.

    --Sparty
    disciplesofdirt.org

    We don't quit riding because we get old.
    We get old because we quit riding.

  16. #16
    meh... whatever
    Reputation: monogod's Avatar
    Join Date
    Feb 2006
    Posts
    5,306
    Quote Originally Posted by Sparticus
    Thanks. At $8.50 this looks like the way to go.

    --Sparty
    i dont believe those are hex.
    "Knowledge is good." ~ Emil Faber

  17. #17
    meh... whatever
    Reputation: monogod's Avatar
    Join Date
    Feb 2006
    Posts
    5,306
    this tool is great for regular slotted/hex bolts.

    locks securely into the rear slot and prevents spinning or stripping of the slot while turning the front ah.

    Last edited by monogod; 12-24-2007 at 02:59 PM.
    "Knowledge is good." ~ Emil Faber

  18. #18
    DAS
    DAS is offline
    mtbr member
    Reputation: DAS's Avatar
    Join Date
    Jan 2004
    Posts
    121
    Good lord, Sparty, I have no idea what you are talking about. I'm so out of the loop! I mostly ride road these days. Well, I guess I ONLY ride road these days. How did I end up this way?

    Merry Xmas to your OR folks.

  19. #19
    Nouveau Retrogrouch SuperModerator
    Reputation: shiggy's Avatar
    Join Date
    Dec 1998
    Posts
    48,236
    Quote Originally Posted by monogod
    truvative makes a set with 5 per pack for a couple bucks less than the cobalt.

    Those are alloy bolts.

    If you are OK with grinding the nuts, Sparty, look at the steel "rock guard" bolts for $8 (or less ).

    https://aebike.com/page.cfm?PageID=3...ils&sku=CR2471
    mtbtires.com
    The trouble with common sense is it is no longer common

  20. #20
    mtbr member
    Reputation:
    Join Date
    Sep 2005
    Posts
    28
    Quote Originally Posted by monogod
    i dont believe those are hex.
    Yes they are hex and yes they are steel. Here is a bad picture that I think shows both. I bought 2 sets last fall and will likely buy 2 more sets this winter to replace chainring bolts for all my single ringed bikes. Finally no more bloody knuckles when changing rings
    Attached Images Attached Images

  21. #21
    Out spokin'
    Reputation: Sparticus's Avatar
    Join Date
    Dec 1999
    Posts
    9,659
    Quote Originally Posted by SSchmoe
    Yes they are hex and yes they are steel. Here is a bad picture that I think shows both. I bought 2 sets last fall and will likely buy 2 more sets this winter to replace chainring bolts for all my single ringed bikes. Finally no more bloody knuckles when changing rings
    Hey SSchmoe that's a pretty fuzzy magnet pic you got there but just so you know, I ordered 4 sets of those chainring bolts from Jenson. I like that they're steel (I'm convinced) and come with an alloy spacer so I don't have to cut 'em down if I don't want to. Also that there are 5 in the box... I've got old school cranks on all my bikes.

    Thanks for the input/link/proof.

    --Sparty
    disciplesofdirt.org

    We don't quit riding because we get old.
    We get old because we quit riding.

  22. #22
    mtbr member
    Reputation:
    Join Date
    Jan 2004
    Posts
    589
    Sparty, my LBS has had these for a couple of years, both black alum and SSteel, even in short lengths. I think it mostly comes from the BMX world. cost less than $10 I think. Have used them with moderate success, seemed to be a bit slippery on Surly SS rings, bent two rings bad when the bolts fell out. My fault for not checking when the bike was making a funny noise
    probably best to use some dried locktite on the threads, since you can get a good grip on the nut.

    bike ON
    bob
    red-haze
    The more I know the more I know I don't know.
    Let the bike ride the trail, you ride the bike.
    Look where you want to go, not where you don't want to go.

  23. #23
    Out spokin'
    Reputation: Sparticus's Avatar
    Join Date
    Dec 1999
    Posts
    9,659
    Quote Originally Posted by red-haze.com
    ... locktite on the threads, since you can get a good grip on the nut.

    bike ON
    bob
    Will do, Bob. Thanks for the tip.

    --Sparty
    disciplesofdirt.org

    We don't quit riding because we get old.
    We get old because we quit riding.

  24. #24
    meh... whatever
    Reputation: monogod's Avatar
    Join Date
    Feb 2006
    Posts
    5,306
    Quote Originally Posted by SSchmoe
    Yes they are hex and yes they are steel.
    sweet! thanks for the clarification. just ordered a bunch for the shop from quality. generally they are listed as hex in the description, but for some reason are not. no more grindy!
    "Knowledge is good." ~ Emil Faber

Members who have read this thread: 0

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2019 VerticalScope Inc. All rights reserved.