RADBMX.CO.UK
Technical & Reference Section => Tech and Restoration => Topic started by: thecaptain on December 19, 2011, 02:46 PM
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alright guys, bought a new school mutiny cosmotron from the local friday ad, turns out the frames cracked at the headtube, little pissed but it was very cheap so cant complain
just wondering if anyone here is any good at welding? crack is around 1/2 way round the downtube weld
cheers in advance
tom
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I'd say there are plenty who can weld on here, Phil Sawzal's work is second to nine though so might be worth giving him a pm, no idea how busy he is etc.
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Yep - Sawzall will fix that up nice. Can't you just take the fekker back though?
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I'd say there are plenty who can weld on here, Phil Sawzal's work is second to nine though so might be worth giving him a pm, no idea how busy he is etc.
Bet Phil will be pleased to hear that you think he's the 10th best at it, so who are the 9 people better than him ???
:LolLolLolLol: :LolLolLolLol:
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I see :2funny:
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Cracked weld doesn't sound too healthy that. Even if you do remove the damaged weld and put another run around the head tube then it would need to be heat treated afterwards if the frame is 4130 to get the strength back into the tubing as the heat from welding would have affected it. This would be especially critical at the head tube with the high stresses it will receive.
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I'd say there are plenty who can weld on here, Phil Sawzal's work is second to nine though so might be worth giving him a pm, no idea how busy he is etc.
Bet Phil will be pleased to hear that you think he's the 10th best at it, so who are the 9 people better than him ???
:LolLolLolLol: :LolLolLolLol:
Fook these sausage fingers :LolLolLolLol: :LolLolLolLol: I think it might help if I change the letters round on my keyboard :-[
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take it to dennis in crowhurst, :daumenhoch:
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messaged sawzal but no reply since last contact over a week ago, might have to take it to dennis fraz, aint been there in years, loved the vert ramp!
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Sawzall has computer problems and can only get online in very small doses.
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Sawzall has computer problems and can only get online in very small doses.
ahhhh .. that explains it ;)
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Cracked weld doesn't sound too healthy that. Even if you do remove the damaged weld and put another run around the head tube then it would need to be heat treated afterwards if the frame is 4130 to get the strength back into the tubing as the heat from welding would have affected it. This would be especially critical at the head tube with the high stresses it will receive.
+1
If you intend to use it in anger i would be very wary. I would only use it for cruising round on unless you can increase the surface area of the weld with a larger version of the plates they put on the downtubes these days. May not be pretty though :'(
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It will be fine with a weld.
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If you are based near North- West London I can thoroughly recommend a friend of mine..
Colin Smith
Smiths Welding Services
Old Mill Farm
Old Mill Lane
Uxbridge
UB8 2JH
Tel: 01895 251145
Ask for Colin and tell him you know Marty Coughlin through the BMX site :daumenhoch:
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still after someone to weld this frame :(
im based near hastings, east sussex. london is a bit of a mission for a weld but thats all the same :daumenhoch:
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What material is this frame ? Got any piccys u can stick up ?
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Have a google for custom race car builders and they should be able to help.
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What material is this frame ? Got any piccys u can stick up ?
its 4130, heres a few pics
anyone on here help? have had no luck elsewhere
(http://www.radbmx.co.uk/archive/albums/h272/southcoastbmx/2012037.jpg)
(http://www.radbmx.co.uk/archive/albums/h272/southcoastbmx/2012038.jpg)
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You can weld 4130 with a mild steel filler rod with Tig so any general fabricator who is half decent at Tig could repair it but as I mentioned it would need heat treatment afterwards to bring back the strength to the heat affected area if you wanted to ride the bike for its intended purpose.
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You can weld 4130 with a mild steel filler rod with Tig so any general fabricator who is half decent at Tig could repair it but as I mentioned it would need heat treatment afterwards to bring back the strength to the heat affected area if you wanted to ride the bike for its intended purpose.
ah isee, its only going to be used as a pub bike anyway not going to be jumping with it
still looking for someone to weld it!
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Just pop in your local fabricators with it and ask if they are set up for mild steel and can they weld it up for you.
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Just pop in your local fabricators with it and ask if they are set up for mild steel and can they weld it up for you.
ah ok cheers, will try that
cheers
tom
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That weld is fookin shite no wonder it has cracked . Welds should never break ;) the parent metal should break first :shocked: Pm me if u want bud :daumenhoch:
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Just had an offer from DARREN K.A.P to weld it for free i just pay postage, absolute LEGEND!!! :4_17_5:
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Hi Captain
Did you have any luck with your weld?
I've been looking for a welder for months. I've a mongoose FS1 with a crack in the seat tube: (http://payload26.cargocollective.com/1/0/2895/2834115/Crack_o.jpeg)
The crack was hidden under an industrial sized clamp on eBay.
I'm in South West London, but more than willing to travel to save my goose.
Any help would be really appreciated.
Cheers