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Author Topic: Is my Easton bar cracked?  (Read 1926 times)

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Offline Alan

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Is my Easton bar cracked?
« on: January 09, 2009, 05:43:36 PM »
I'm a newb when it comes to carbon/composite components...so please bear with me.

I just took delivery of these brand new 2008 Easton Monkeybar XC bars.  Last night I installed them and torqued them to spec (per my LBS...5-7 nm on the stem and 3-4 nm for the levers).  I torqued the stem bolts to 5nm in the proper sequence and the levers to 3nm. 

Take a look at these photos.  It looks like some sort of crack underneath the top coat.  But, upon further inspection it also looks similar to the seam on the top side of the bar.  I've never ridden the bike with this bar and this is something I noticed after I wrapped up the install.  Not sure if this was always there or if it developed after the install (I didn't closely inspect these bars prior to install).

Seam on the top of the bar:


Area of concern:




This area of concern spans the entire bar.  Is this a crack or nothing to worry about?

Offline Triple T

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Re: Is my Easton bar cracked?
« Reply #1 on: January 09, 2009, 06:03:49 PM »
I'm not an expert either, so take what I'm about to say with a grain of salt.  I just went and looked at my carbon bars, and I have similar seams on mine.  To me, it looks like it's where the carbon weave was cut and what you're seeing is the end of that piece after the resin has been applied.  If you didn't hear anything crack when you were torquing, you should be fine.  But that's up to you as to whether you're confident enough to ride them like that or get someone else's "expert" advice.
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Online BillT

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Re: Is my Easton bar cracked?
« Reply #2 on: January 09, 2009, 06:27:10 PM »
Those pictures scare me, but I'm carbon-handlebar-aphobic.
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Offline eclark

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Re: Is my Easton bar cracked?
« Reply #3 on: January 09, 2009, 06:36:11 PM »
I agree with BillT that carbon bars are just plain scary.  Aside from that, I think your fine, it's just the end of the carbon run.  I have put carbon bars in my spare parts box for a small score on the outside where I slammed them so hard I spun them in the stem though.  If that crack appears to be something that touches the surface I would get rid of 'em in a hot second. 

Offline Alan

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Re: Is my Easton bar cracked?
« Reply #4 on: January 09, 2009, 07:00:58 PM »
I can run my finger nail over it and it is still smooth...which makes me think it isn't a crack.  What bugs me is the main seam is on the top edge of the bar (see the first photo).  I figured there'd be only one seam. 

Offline Alan

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Re: Is my Easton bar cracked?
« Reply #5 on: January 09, 2009, 07:19:50 PM »
A senior brand manager from Easton just took a look at the photos and ensured me it is a normal striation under the clearcoat.  He also applauded me for using a torque wrench (I figured that was a given with carbon bars). 

Even better...he got back to me within 15-minutes of me sending them an email with the photos.  Talk about awesome customer service! 

Offline Dave In Odessa

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Re: Is my Easton bar cracked?
« Reply #6 on: January 09, 2009, 08:11:58 PM »
Just tighten them until you hear cracking, then back them off 1/4 turn  :P
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Offline chisel

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Re: Is my Easton bar cracked?
« Reply #7 on: January 10, 2009, 07:26:03 AM »
carbon bars rule!!those boys are scared of everything lite. they ride dh rigs on xc... :o ;D

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Re: Is my Easton bar cracked?
« Reply #8 on: January 10, 2009, 09:03:29 AM »
carbon bars rule!!those boys are scared of everything lite. they ride dh rigs on xc... :o ;D


No, I'm scared of picking carbon pieces out of wounds for weeks after a crash and having doctor's ask 'did you happen to see any flesh left out on the trail, we're having a hard time sewing this up' -





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Offline bikehard

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Re: Is my Easton bar cracked?
« Reply #9 on: January 10, 2009, 01:32:07 PM »
Why you gotta go there Bill?  At least your elbow is now .005 grams lighter now! ;D
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Offline chisel

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Re: Is my Easton bar cracked?
« Reply #10 on: January 11, 2009, 08:23:42 AM »
a mere flesh wound... ;D

Offline Sleepingb18

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Re: Is my Easton bar cracked?
« Reply #11 on: January 13, 2009, 05:57:25 PM »
oh SNAP! lol.. wow, didnt know it would be that much of an issue..

 

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