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PostPosted: Sun Aug 07, 2011 3:09 pm 
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Joined: Mon Jun 21, 2010 10:25 pm
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Location: lIVERPPOL
Right i have an gt dhi frame , which was sold to me but the guy did not tell me it had dents and a hairline crack in it.
These were notourious for this.
Just wondering if i can have the crack welded , or will this aneal the surrounding material.
Also will it need to be heat treated?

Thanks for the advice

Jay


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PostPosted: Sun Aug 07, 2011 3:53 pm 
Old School Grand Master
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Joined: Mon Jun 14, 2010 9:06 pm
Posts: 4433
Location: Herts UK
depends on the grade af alumimium; some grades need heat treatment, some don't.


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 Post subject: Alu welding
PostPosted: Thu Aug 18, 2011 12:46 am 
Old School Hero
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Joined: Sun Mar 27, 2011 2:09 am
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Location: Hull, Humberside
When my Cannondale aluminium hardtail cracked on the seat tube, I asked a local aluminium/steel fabricator if they could weld it up, and they did it neatly, think they wanted it for a morning or afternoon and £20.

The local business I asked made alu door/window frames for UPVC door & window businesses.

I just looked up ALUMINIUM FABRICATORS in the local YELLOW PAGES, then went in person to speak to them & show them what I wanted doing.


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PostPosted: Thu Aug 18, 2011 10:37 pm 
Dirt Disciple

Joined: Thu Jan 17, 2008 11:19 pm
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Location: Buckingham
I've got a DHi that cracked most of the way round part of the tube above the idrive, i had it welded at work 2 years ago and it's been fine since.


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PostPosted: Mon Aug 22, 2011 9:11 pm 
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squiffy wrote:
I've got a DHi that cracked most of the way round part of the tube above the idrive, i had it welded at work 2 years ago and it's been fine since.


Splendid , how bad was your crack?
Reason i ask is that i can't tell if it is a crack or not , it is a black line
at the bottom of the weld.
I may get it welded just in case.
Just out of interest how much was it to be repaired?
Also have you any spare to sell for this frame?


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PostPosted: Tue Aug 23, 2011 11:12 am 
Dirt Disciple

Joined: Thu Jan 17, 2008 11:19 pm
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Location: Buckingham
Mine was just a line at the bottom of the weld, when i cleaned the paint back there was a definate crack which i drilled a hole at either end of then got the fab shop at work to tig up.
I might have some spares what are you after?


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PostPosted: Thu Aug 25, 2011 4:29 pm 
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squiffy wrote:
Mine was just a line at the bottom of the weld, when i cleaned the paint back there was a definate crack which i drilled a hole at either end of then got the fab shop at work to tig up.
I might have some spares what are you after?


Yeah i have removed the paint and i can't tell.
But as these were know for cracking in that are i may aswell get it welded.

Spares wise any to be honest buddy


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