Carbon dropout torque?
02-07-18, 06:38 PM
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Carbon dropout torque?
Hello all,
I'm new to the carbon scene and am just about finished with my track bike build. I have an essor full carbon fork (carbon dropouts as well) and while I was putting on the front wheel it didn't even occur to me that I was dealing with carbon and tightened the nuts (15mm) with a good amount of force. I heard some slight creaking/cracking and was wondering if I should be concerned with dropout bolt torque? I read that solid carbon on dropouts is pretty damn strong and that it takes loads of force to actually break it but also read that it can be brittle and I'm concerned that I may have just destroyed my fork. I don't see any cracking but is this something I should be concerned about?
I'm new to the carbon scene and am just about finished with my track bike build. I have an essor full carbon fork (carbon dropouts as well) and while I was putting on the front wheel it didn't even occur to me that I was dealing with carbon and tightened the nuts (15mm) with a good amount of force. I heard some slight creaking/cracking and was wondering if I should be concerned with dropout bolt torque? I read that solid carbon on dropouts is pretty damn strong and that it takes loads of force to actually break it but also read that it can be brittle and I'm concerned that I may have just destroyed my fork. I don't see any cracking but is this something I should be concerned about?
02-07-18, 08:06 PM
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Well, you don’t need to tighten the front wheel axle nuts very much in the first place. All my carbon forks have aluminum dropouts, so I can’t say what damage you may have done, but the washers on the nuts have sharp edges which could certainly damage carbon if overtightened.
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02-08-18, 12:16 PM
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Originally Posted by kcsnygail
I heard some slight creaking/cracking
Sorry, I have nothing useful to offer.
02-08-18, 01:25 PM
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Your cog is slipping.
You're probably going to die.
02-08-18, 01:30 PM
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I ran into the same exact issue with my Essor fork. First time I tightened down my front wheel I heard a slight crackling sound. Got real scared, so I removed the wheel and looked everything over. No damage, never happened again when I tightened my bolts. I put nearly 2k miles of street riding on that fork with no issues. As long as there is no visible damage (including hairline cracks) you should be good. Just make sure you're not over tightening your front wheel - you shouldn't need to really wrench on them to get them safely tight.
02-10-18, 01:19 PM
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Originally Posted by zubes5280
I ran into the same exact issue with my Essor fork. First time I tightened down my front wheel I heard a slight crackling sound. Got real scared, so I removed the wheel and looked everything over. No damage, never happened again when I tightened my bolts. I put nearly 2k miles of street riding on that fork with no issues. As long as there is no visible damage (including hairline cracks) you should be good. Just make sure you're not over tightening your front wheel - you shouldn't need to really wrench on them to get them safely tight.
Anyway heres a pic
https://imgur.com/a/YAm0n
02-10-18, 06:53 PM
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Originally Posted by kcsnygail
Yeah I guess I'll just take it to a shop and have them check it out
Anyway heres a pic
https://imgur.com/a/YAm0n
Anyway heres a pic
https://imgur.com/a/YAm0n
