Crack in frame
01-15-11 | 02:52 PM
#1
Thread Starter
Junior Member
Joined: Oct 2009
Posts: 96
Likes: 2
From: AZ By Way of NYC
Bikes: Full Susp Mtn
Crack in frame
I have an aluminum bike frame that has a hair-line crack in it. The frame isn't a very expensive one, so welding it is out of the question.
I thought to use epoxy to repair it. What do you think? Any suggestions/advice you may have would be helpful.
ThanksBike fram crack.jpg
I thought to use epoxy to repair it. What do you think? Any suggestions/advice you may have would be helpful.
ThanksBike fram crack.jpg
01-15-11 | 03:42 PM
#3
Senior Member
Joined: Mar 2008
Posts: 8,687
Likes: 297
Epoxy applied straight into/over the crack isn't even worth trying.
If it's a crack that's at least 2" away from any weld you can apply epoxy and carbon fiber as a "plaster cast", but the material alone would set you back just as much(if not more) than the cost of visiting a helpful welder.
If it's a crack that's at least 2" away from any weld you can apply epoxy and carbon fiber as a "plaster cast", but the material alone would set you back just as much(if not more) than the cost of visiting a helpful welder.
01-15-11 | 03:52 PM
#4
Senior Member
Joined: Apr 2009
Posts: 39,897
Likes: 3,865
From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
It all depends where the crack is, and what caused it.
Some can be ridden forever without any repair, some will grow, but can be salvaged, and some are clear and present dangers and the frame should be given to the scrap man.
Some can be ridden forever without any repair, some will grow, but can be salvaged, and some are clear and present dangers and the frame should be given to the scrap man.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
01-15-11 | 04:21 PM
#5
Senior Member
Joined: Oct 2009
Posts: 1,921
Likes: 5
From: England, currently dividing my time between university in Guildford and home just outside Reading
Bikes: Too many to list here!
I'd also add that there's no real way to tell which of those descriptions your crack fits just from looking at that picture, maybe cross-post this in the framebuilders' section of the site and someone will know how to determine which it is.
01-15-11 | 04:47 PM
#6
Senior Member
Joined: Aug 2005
Posts: 33,657
Likes: 1,119
From: Pittsburgh, PA
Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
Boy, is this the time for cracked aluminum frames.
01-15-11 | 04:55 PM
#7
Senior Member
Joined: Oct 2004
Posts: 4,224
Likes: 6
In my view, any crack of any kind, on an aluminum frame, is dangerous. You just don't know when it's gonna give way. I am not a firecrack bike mechanic, but an old wrench I know and trust, told me a long time ago not to mess riding/fixing any aluminum frame/component with a crack.
I trust his judgement absolutely!
I trust his judgement absolutely!
01-15-11 | 05:39 PM
#8
Senior Member
Joined: Mar 2008
Posts: 5,559
Likes: 53
From: The 'Wack, BC, Canada
Bikes: Norco (2), Miyata, Canondale, Soma, Redline
So now you started TWO NEW threads about the same cracked frame? If you wanted to add the picture you should have posted them to this thread instead of making a whole new one with the pictures in it.
Here's the other thread folks.
https://www.bikeforums.net/showthread...Crack-in-frame
Geosammy, you should ask the moderator to just delete this thread or merge it with the one in the link I just gave.
Here's the other thread folks.
https://www.bikeforums.net/showthread...Crack-in-frame
Geosammy, you should ask the moderator to just delete this thread or merge it with the one in the link I just gave.
01-15-11 | 05:47 PM
#9
Senior Member
Joined: Apr 2009
Posts: 39,897
Likes: 3,865
From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Or he could simply edit the post without pictures, replacing it with "duplicate, see other post with pictures", or use a link.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
Thread
Thread Starter
Forum
Replies
Last Post
arakhnidef
Road Cycling
40
12-14-09 07:37 AM
