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 Post subject: Any welders?
PostPosted: Wed May 22, 2013 10:33 pm 
Retro Guru

Joined: Tue Dec 04, 2012 7:44 pm
Posts: 302
Location: Durham
Hello Retrowers. Wondering what sort of weld is used on a bike frame. Im thinking tig?


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 Post subject: Re: Any welders?
PostPosted: Wed May 22, 2013 10:51 pm 
retrobike rider
retrobike rider

Joined: Tue Jul 10, 2012 11:58 pm
Posts: 2362
Location: Bournemouth
either brass brazing, or TIG


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 Post subject: Re: Any welders?
PostPosted: Wed May 22, 2013 10:54 pm 
Retro Guru

Joined: Tue Dec 04, 2012 7:44 pm
Posts: 302
Location: Durham
Have a look at this Tim. The last pics of the stripped frame. Let me know your thoughts.
thx Byron

viewtopic.php?f=1&t=233083


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 Post subject: Re: Any welders?
PostPosted: Wed May 22, 2013 11:13 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Thu Jul 09, 2009 2:12 pm
Posts: 3050
Location: Yateley, Hants.
reconminicon wrote:
Have a look at this Tim. The last pics of the stripped frame. Let me know your thoughts.
thx Byron

viewtopic.php?f=1&t=233083


That one's tig'd, the brass brazed frames are easily identifiable by the gold coloured filler of the brazing rod (brass usually but can be other materials) in the joint, usually you see large smoothed fillets but some like my kili are smaller joins. Brazing is also used on the lugged frames too. Tig welding frames on the whole is a newer process only used since newer tubesets (older Reynolds 501/531/653/753 were unsuitable for it), like the Tange stuff.

Carl.


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 Post subject: Re: Any welders?
PostPosted: Thu May 23, 2013 12:22 am 
retrobike rider
retrobike rider

Joined: Tue Jul 10, 2012 11:58 pm
Posts: 2362
Location: Bournemouth
oh yeah, you have TIG welds, but I was referring to the proposed fixes. I don't think they'll work


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 Post subject: Re: Any welders?
PostPosted: Thu May 23, 2013 12:30 am 
Retro Guru

Joined: Tue Dec 04, 2012 7:44 pm
Posts: 302
Location: Durham
It would be a job to prep that hole. It would have to be opened and lengthened. The arc would have to be reversed to push the weld in then swap the polarity for a second pass then file. I dont know. I really want that frame back. :(

Or it pulls it back so it doesnt drop in!


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 Post subject: Re: Any welders?
PostPosted: Thu May 23, 2013 8:39 pm 
Retro Guru

Joined: Tue Dec 04, 2012 7:44 pm
Posts: 302
Location: Durham
Left it at the fabricators today. Will post the results.


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