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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  i need some metal
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Author Topic: i need some metal  (Read 2214 times)

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motomagII

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i need some metal
« on: October 01, 2010, 06:03 PM »
i just got myself a frame and need some metal for a repair .it needs to be 4130 chromo plat plate not tube for bottom gusset a piece around 4 inch square will be good

i take it couple people here mioght know what i just won on ebay

YGT

  • Guest
Re: i need some metal
« Reply #1 on: October 01, 2010, 06:31 PM »
Ask malo at pir-bmx.com ...... he imports 4130 for his handmade frames.

bof

  • Guest
Re: i need some metal
« Reply #2 on: October 01, 2010, 08:09 PM »
Greg if its just a small piece of plate steel you are welding onto a frame I wouldnt worry about it being cromoly any steel would do . what thickness are you after I might be able to help with some plate steel   :daumenhoch:

motomagII

  • Guest
Re: i need some metal
« Reply #3 on: October 01, 2010, 08:16 PM »
1.3 or 1.4mmthick and about 3 or 4 inch square .was just thinking rest is chromo so different metals when welding might have different weld/heat resistance temperatures?

cant wait for this to turn up from the usa get it welded and ready for the summer series .gonna ride it like i stole it lol

Offline mattfx81

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Re: i need some metal
« Reply #4 on: October 01, 2010, 08:18 PM »
Id go for mild steel plate aswell as the welder will most likely use a mild steel wire A15(ers70-s2) for the welding. A 4130 welding wire is only used on 4130 when the job is going through a heat treatment process post fabrication so that the whole job contracts and expands at the same rate (in theory).

Matt

motomagII

  • Guest
Re: i need some metal
« Reply #5 on: October 01, 2010, 09:47 PM »
I assume its possible to TIG weld mild steel?
What frame are you repairing?

frame is secret project cant say at moment
 give me couple months ill show ya all
 :daumenhoch:

dan-dare

  • Guest
Re: i need some metal
« Reply #6 on: October 01, 2010, 09:59 PM »
as long as it's ferrous greg, it will weld dude. :daumenhoch: :daumenhoch: :daumenhoch:

Offline Jon The Bassist

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Re: i need some metal
« Reply #7 on: October 01, 2010, 10:01 PM »
http://www.youtube.com/watch?v=4EL67mjv1nM

...I can't help myself sometimes  :-[

Rodgy1970

  • Guest
Re: i need some metal
« Reply #8 on: October 01, 2010, 10:32 PM »
Let me rephrase.  What I meant was, will mild steel have the nice "over lapping coins" appearance when welded?  Most mild steel shite frames, burners etc have really shitty looking welding.  Like toothpaste squeezed out of a tube.

AFAIK

toothpaste = MIG

overlapping coins = TIG


Offline MartyC

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Re: i need some metal
« Reply #9 on: October 02, 2010, 04:00 PM »
Let me rephrase.  What I meant was, will mild steel have the nice "over lapping coins" appearance when welded?  Most mild steel shite frames, burners etc have really shitty looking welding.  Like toothpaste squeezed out of a tube.

AFAIK

toothpaste = MIG

overlapping coins = TIG


+1


Better to crash and burn than fade away

Offline boofy44

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Re: i need some metal
« Reply #10 on: October 02, 2010, 04:35 PM »
wouldn't be a brackens frame would it? ;)

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  i need some metal
 

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