Chipped carbon fork

Discuss light weight issues concerning road bikes & parts.
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Tj123
Posts: 13
Joined: Sun Dec 30, 2018 6:41 pm

by Tj123

Ok so I have been a complete idiot and decided to fit a crown race to my carbon fork using a hammer and screwdriver wrapped in cloth. So guess what happened!! Slipped and taken a chunk out of the fork crown. I think it is just paint, but I have sanded down to see if any damage to the carbon. What do you guys think?
I have attached a pic.

Thanks
Attachments
IMG_20181230_174709.jpg

mcfarton
Posts: 78
Joined: Thu Mar 15, 2018 5:15 pm

by mcfarton

Did you try the coin test?

Personally if I had any doubt with a fork I would throw it out. It is one thing for a top tube or a chain stay to fail, it is another for a fork. Is it an expensive fork?


Sent from my iPhone using Tapatalk

by Weenie


Tj123
Posts: 13
Joined: Sun Dec 30, 2018 6:41 pm

by Tj123

Yep tried the coin test and it all sounds the same. Just a bit concerned as it's the fork. Could a chip like that cause structural damage, isn't the fork crown a solid piece of carbon? Thanks

mattr
Posts: 4636
Joined: Fri May 25, 2007 6:43 pm
Location: The Grim North.

by mattr

Pity you don't have a picture of the chip before you sanded, or do you even have the actual chipped off piece?

kode54
Posts: 1599
Joined: Tue May 23, 2006 9:39 pm

by kode54

looks like clear coat chipped off. not a great clear coat job...as it shouldn't chip like that. i would sand down the area and use a rattle can to apply a clear coat protection. water can get under the chipped area and make it worse especially where the chipped area is.
- Factor 02 Disc + DA9170 + Enve 4.5AR CK CL hubs
- Moots Vamoots Disc RSL Titanium + DA9170 + Enve 3.4AR CK CL hubs
- Parlee Altum + DA9150 + Enve SES 4.5 Ene carbon hubs
- Argonaut Spacebike 2.0 + DA9170 + Enve SES 5.6 DT Swiss 240 CL hubs

Tj123
Posts: 13
Joined: Sun Dec 30, 2018 6:41 pm

by Tj123

Hi I have the chips. 50p for size ref.
Attachments
IMG_20181230_211939.jpg
IMG_20181230_211924.jpg
IMG_20181230_211914.jpg

kode54
Posts: 1599
Joined: Tue May 23, 2006 9:39 pm

by kode54

it didn't look like chunks of the fork came off from the first picture you posted. these look pretty bad, although judging from the coin...pieces are pretty small?
- Factor 02 Disc + DA9170 + Enve 4.5AR CK CL hubs
- Moots Vamoots Disc RSL Titanium + DA9170 + Enve 3.4AR CK CL hubs
- Parlee Altum + DA9150 + Enve SES 4.5 Ene carbon hubs
- Argonaut Spacebike 2.0 + DA9170 + Enve SES 5.6 DT Swiss 240 CL hubs

Tj123
Posts: 13
Joined: Sun Dec 30, 2018 6:41 pm

by Tj123

Yer the biggest piece is about 5mm long by 1mm thick.

mattr
Posts: 4636
Joined: Fri May 25, 2007 6:43 pm
Location: The Grim North.

by mattr

Almost certainly just the clearcoat.

Tj123
Posts: 13
Joined: Sun Dec 30, 2018 6:41 pm

by Tj123

Thanks for that guys, always good to get others opinions. I have heard of people using nail varnish instead of lacquer is that ok?

Kumppa
Posts: 280
Joined: Mon Oct 13, 2014 10:05 am

by Kumppa

If it would be carbon layer it would not chip like that or atleast it wouldn't be very strong layer after all. Pretty sure it's just paint or clearcoat. With clearcoat you would get more permanent protect but if it's not very expensive frame I would just use anything.

GothicCastle
Posts: 222
Joined: Mon Jul 04, 2016 1:52 am

by GothicCastle

Mistake #1: using the wrong tools to install a crown race
Mistake #2: thinking a bunch of internet randos can assess the safety of your fork

by Weenie


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