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 Post subject: Cracked frame ??
PostPosted: Wed Jun 27, 2012 12:08 pm 
Retro Guru

Joined: Sun Aug 07, 2011 10:55 am
Posts: 2920
Location: Dorset
Hello

Whilst checking over the old raleigh clubman 1985, i noticed some strange marks in the paint mainly on the chain stays, there are many of them on the bottom sections of the frame.

My first thoughts were :shock: :shock: Especially as i have just finished refurbing it, am i right in assuming they arent cracks in the frame, it looks like cracks in the paint where moisture may have got in.

The plan was to use the bike over the summer and then get it dipped and resprayed proffesionally.

Am i right to be worried ?

Any help appreciated, i know the pictures are not the best.



Image

Image


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 Post subject: frame
PostPosted: Wed Jun 27, 2012 12:14 pm 
Retro Guru

Joined: Sun Jul 04, 2010 10:55 pm
Posts: 393
Location: YORKSHIRE
Scrape some paint of and have a prod around with a bradawl. Its not going to hurt you having some touch up paint on it for the rest of summer but it could if the frame fails.
Regards
Peter


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 Post subject: Re: frame
PostPosted: Wed Jun 27, 2012 12:25 pm 
Retro Guru

Joined: Sun Aug 07, 2011 10:55 am
Posts: 2920
Location: Dorset
half cog wrote:
Scrape some paint of and have a prod around with a bradawl. Its not going to hurt you having some touch up paint on it for the rest of summer but it could if the frame fails.
Regards
Peter


Ill pluck up the courage to get the bradawl out, i rode it yesterday for a few miles and constantly worried about it crumpling :oops:


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 Post subject:
PostPosted: Wed Jun 27, 2012 12:28 pm 
Old School Grand Master
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Joined: Tue Oct 04, 2011 4:15 pm
Posts: 3499
Location: Behind you with the duct tape pulled out.
Think thats just tin worm. But as was said wont hurt to just check.


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 Post subject: cracks
PostPosted: Wed Jun 27, 2012 12:31 pm 
rBoTM Winner
rBoTM Winner
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Joined: Mon Aug 08, 2011 5:58 pm
Posts: 162
Location: Scotland
Bit worrying isn't it - where the mudguard bridge joins the stays is a classic failure point (when i worked in the raleigh dealership all the warranty frames cracked there). That being said, the cracks were always straight and 90 degrees to the ground, unlike yours. If its any consolation, we used to get muppets in who'd ridden around for ages like this, only noticing when the chainstay completely separated (and even then it didn't collapse as such!). Good luck!!


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 Post subject:
PostPosted: Wed Jun 27, 2012 12:38 pm 
Retro Guru

Joined: Sun Aug 07, 2011 10:55 am
Posts: 2920
Location: Dorset
After a few deep breaths, i got the bradawl out and scraped away a cm squared section of the chainstays and underneath there was just shiny steel so it appears ok, its going into my LBS tomorrow for a service so ill get them to see just to make sure.

So not as bad as i thought, and a sleepless night over :D

So now i have a patch of bare metal, is it best to apply the touch up on its own or primer, rust inhibitor ?


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 Post subject:
PostPosted: Wed Jun 27, 2012 1:05 pm 
rider | rBoTM Winner
rider | rBoTM Winner
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Joined: Fri Jan 25, 2008 1:42 pm
Posts: 5132
Location: Wakefield, Yorkshire
My Buzz lo-pro had 'ripples' in the paint like that and it was fine underneath when blasted off. It's possibly the type of paint that goes like that under temperature extremes? Different co-efficient of expansion in the paint relative to the steel possibly?


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 Post subject:
PostPosted: Wed Jun 27, 2012 1:12 pm 
Retro Guru

Joined: Sun Aug 07, 2011 10:55 am
Posts: 2920
Location: Dorset
Thanks for the info guys 8)


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 Post subject:
PostPosted: Wed Jun 27, 2012 3:40 pm 
Old School Grand Master
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Joined: Thu Jul 19, 2007 7:18 pm
Posts: 3798
Location: Staffordshire
A crack would be into the frame. Those are stick up from the frame. Probably a bit of rust. Don't let it take a hold though!


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 Post subject:
PostPosted: Wed Jun 27, 2012 4:28 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8212
Location: New Forest, UK
Rust does that with the 'tin worm' effect - the little areas of blistered paint and rust hole water and on it goes. When it looks awful get it blasted and repainted.


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