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Thread: Stabilizing a crack

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    Senior Member elkslayer4x5's Avatar
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    Default Stabilizing a crack

    While preparing for my Cougar lll Elite cam change, I found that I've got a crack at the bottom of the cam fork, about 5/8" long, on the front side ( target side ) of my 5H 08 carbon limb. I say 08 because it was a bottom limb and has the sticker on it, ser# 08. Since its going to be a nitrous shoot thru bow, Im wondering if I can stabilize the crack/splinter by gently sperading it open and letting an epoxy ooze into it and then clamping it togather again. I can see movement with a magnifing glass while twisting the forks, but those forks won't be twisting any longer. Tell me what you think. What type of epoxy or super glue would work best.

    Last edited by elkslayer4x5; 02-22-2011 at 10:56 AM.
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    I definitely would get those limbs replaced.

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    Quote Originally Posted by elkslayer4x5 View Post
    While preparing for my Cougar lll Elite cam change, I found that I've got a crack at the bottom of the cam fork, about 5/8" long, on the front side ( target side ) of my 5H 08 carbon limb. I say 08 because it was a bottom limb and has the sticker on it, ser# 08. Since its going to be a nitrous shoot thru bow, Im wondering if I can stabilize the crack/splinter by gently sperading it open and letting an epoxy ooze into it and then clamping it togather again. I can see movement with a magnifing glass while twisting the forks, but those forks won't be twisting any longer. Tell me what you think. What type of epoxy or super glue would work best.

    BTW the target side is the back of the bow...more for enlightenment and not criticism.

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    Probably be a much better idea to get them replaced.

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    Senior Member ElkSlayer's Avatar
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    you got a good picture of it and the responces we knew already.

    it was a used bow when he got it. any other ides on a fix, it is only a small crack..Bow will be set up X system, no torque on limbs.. We would like to swap it out for a new one, but no warrenty on a used bow..

    So lets all think out side the box a minute.. Any one Ever try to fix something like this?
    It's all fun an games till you put that big boy on the ground.. now its time to get to work
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    Any one Ever try to fix something like this?
    Never tried, but thought about it and never heard of any attempts. No torque is definitely a plus, so the only way to find out is to give it a go using the strongest epoxy available. You will need to apply heat and that needs to be done carefully so as to not weaken existing lamination joints. Also, after glueing the crack, some glass matting could possibly be used to strengthen the area.

    Have you priced a new set of limbs, I don't think they would be much over $150.

    Good luck.

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    Senior Member elkslayer4x5's Avatar
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    Quote Originally Posted by gibson 787 View Post
    Never tried, but thought about it and never heard of any attempts. No torque is definitely a plus, so the only way to find out is to give it a go using the strongest epoxy available. You will need to apply heat and that needs to be done carefully so as to not weaken existing lamination joints
    My thought was to use gravity and the hot sun and let a slow setting carbon fiber resin settle into that lamination crack to seal it off and prevent any further movement. Any other ideas on how to inject the resin into the split?
    Last edited by elkslayer4x5; 02-22-2011 at 06:49 PM.
    http://eastoutfitter.tripod.com/index.html
    http://www.cascadianbowmen.org/
    Martin 06 Slayer, Nitrous C, shoot thru, 63lb, Quiktune 3000, HAA OL 5519, Beman ICS Hunter
    Martin 06 Slayer, Nitrous C, Shoot thru, 55lb, Quiktune 3000, HHA OL 5519 2X, Easton A/C/C
    Ben Pearson 1968 'Cougar' 62" 45#s @ 28" recurve, parallel shaft POC, Zwickey 'Eskimo' 2 blade

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    Super Moderator bfisher's Avatar
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    Quote Originally Posted by scepterman30x View Post
    BTW the target side is the back of the bow...more for enlightenment and not criticism.
    I used to correct guys with this statement, too, but gave up. Our younger generations know very little about bows, terminology, or history. I made a comment like this once on AT and got slapped on the wrist for my efforts.
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    Senior Member NuttyNative's Avatar
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    Quote Originally Posted by bfisher View Post
    I used to correct guys with this statement, too, but gave up. Our younger generations know very little about bows, terminology, or history. I made a comment like this once on AT and got slapped on the wrist for my efforts.
    That happens alot over there (AT) people just trollin for stuff like that. If I were to try and fix that, I would use carbon fiber resin, at the very least mix ground up carbon fiber to an epoxy resin. That works in high tech R/C cars, very durable.
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    Super Moderator Arrow Splitter's Avatar
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    Quote Originally Posted by elkslayer4x5 View Post
    What type of epoxy or super glue would work best.
    You're scaring me!!
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