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PostPosted: Fri Jun 01, 2018 2:18 pm 
Dirt Disciple
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Joined: Thu Jun 22, 2017 7:57 pm
Posts: 19
Location: Bristol
Hi everyone, I have this Liyang lugged carbon frame that sadly at some point has had a repair attempted with a wood screw...

The top tube also moves slightly in its lugs so I assume the bonding has begun to fail.

Has anyone had anything like this repaired before? I'm considering just hangining it up on the wall as decoration.

Underside of the down tube.

Image

Image


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PostPosted: Fri Jun 01, 2018 2:36 pm 
retrobike rider
retrobike rider
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Joined: Tue Jan 29, 2008 11:04 pm
Posts: 2159
Location: A wretched hive of scum and villainy...
I'd be concerned most about the woodscrew damaging the carbon :D , but at least it's inside the length of the internal lug.

On a repair..plenty of people have had Vitus and Alan frames re-bonded over the years. Have a search around.

The difficult bit would be separating the headtube. I would suspect that it was assembledHT/TT/DT together as a sub-assembly then TT/ST and DT/BB to finish the triangle.
Careful application of heat, such as boiling water or hot air gun should kill the bonding sufficiently to separate, but the expansion of the internal aluminium plug compared to the external carbon might burst it.

Clean up and re-bonding are easy as long as it's held in a fixture to maintain alignment.

All the best,


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 Post subject: Re:
PostPosted: Sat Jun 02, 2018 3:31 pm 
Retro Guru
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Joined: Mon Jul 13, 2015 8:49 pm
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Location: Stoke on Trent
What's hiding under the tape above the rear brake pegs


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 Post subject: Re: Re:
PostPosted: Sat Jun 02, 2018 4:48 pm 
Dirt Disciple
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Joined: Thu Jun 22, 2017 7:57 pm
Posts: 19
Location: Bristol
Retro junkie wrote:
What's hiding under the tape above the rear brake pegs


That's not tape its an alloy joiner for the rear triangle as seen here.

viewtopic.php?f=1&t=213526


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PostPosted: Sat Jun 02, 2018 4:49 pm 
Dirt Disciple
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Joined: Thu Jun 22, 2017 7:57 pm
Posts: 19
Location: Bristol
Thanks danson67, I've started looking at Vitus repair people.


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 Post subject: Re:
PostPosted: Sat Jun 02, 2018 5:45 pm 
Ain't no party like an S Club party
Ain't no party like an S Club party
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Joined: Thu May 25, 2006 4:54 pm
Posts: 7786
Location: 'I have too many DiskDrives!' said no one, ever.
Don't mean to be a party pooper, but that really isn't worth repairing.

Repair cost will likely be £100 plus, which you would be better off putting towards a better frame - these weren't exceptional frames even before being broken.


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