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Is this carbon steerer tube road worthy?

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Is this carbon steerer tube road worthy?

Old 09-25-19, 01:19 AM
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nusnus
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Is this carbon steerer tube road worthy?

After seeing the Bianchi steer fork failure on youtube I decided to check my commuter/training bike. A bit concerned with what I saw down the tube.
The area showing the splinters is approximately 5 inches from the top of the steer tube. That area sits squarely inside the head tube and well away from the head set bearings.

Here is the image: i.redd.it/cwmqidratoo31.jpg

(sorry not allow to post images yet).

Could anyone give some suggestions and advise? The bike is a 2015 CAAD 10. Thanks in advance.

Last edited by nusnus; 09-25-19 at 02:58 PM.
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Old 09-25-19, 11:06 AM
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TiHabanero
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Looks like the tube was finished well up to that point. Take it to a Cdale dealer and have them look at it, and possibly call Cdale to get a more informed view of it.
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Old 09-25-19, 01:29 PM
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aclinjury
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Originally Posted by nusnus View Post
After seeing the Bianchi steer fork failure on youtube I decided to check my commuter/training bike. A bit concerned with what I saw down the tube.
The area showing the splinters is approximately 5 inches from the top of the steer tube. That area sits squarely inside the top tube and well away from the head set bearings.

Here is the image: i.redd.it/cwmqidratoo31.jpg

(sorry not allow to post images yet).

Could anyone give some suggestions and advise? The bike is a 2015 CAAD 10. Thanks in advance.
huh? don't you mean head tube?

anyway, that area looks shoddy, should be smooth. I've never seen inside of any carbon tube look that bad
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Old 09-25-19, 01:42 PM
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ljsense
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To me it looks like the manufacturer gets a rough finish inside the steer tube, maybe from when they pull it off a mandrel, and then they bore it smooth for the part where the compression nut goes.

So, I don't see a problem. Carbon often looks rough on one side of the layup. It's just a factor of how it's molded. The top part is a result of machining it smooth in some way.

If you saw fibers splintering away from a part of the layup that was otherwise smooth, that would be cause for concern. If you tapped that steer tube and it sounded dead halfway down, that would be cause for concern.
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Old 09-25-19, 02:57 PM
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nusnus
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Originally Posted by aclinjury View Post
huh? don't you mean head tube?

anyway, that area looks shoddy, should be smooth. I've never seen inside of any carbon tube look that bad
Yeap. Head tube. Brain spasm after looking down the steer.
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Old 09-25-19, 03:00 PM
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nusnus
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Originally Posted by TiHabanero View Post
Looks like the tube was finished well up to that point. Take it to a Cdale dealer and have them look at it, and possibly call Cdale to get a more informed view of it.
Thanks for the suggestion. I've sent the pics to Cdale and waiting on their reply
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Old 09-25-19, 03:49 PM
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nusnus
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Originally Posted by TiHabanero View Post
Looks like the tube was finished well up to that point. Take it to a Cdale dealer and have them look at it, and possibly call Cdale to get a more informed view of it.
This is the reply I got back from Cdale:

The lower part of the inner steer tube is "unfinished" on this fork. We finish the upper part of the inner steer tube so you can install an the compression plug but we do not finish the lower part because it is not necessary to do so. This is normal for that fork and safe to ride.
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Old 09-25-19, 05:23 PM
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Good for checking with Cdale on it. Put it together and ride!
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