Brazing

An area for general welding posts that don't seem to fit anywhere else.
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Maxthegardener
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Posts: 384
Joined: Tue Oct 25, 2011 11:28 am
SELF INTRODUCTION: Name is Max living in scotland ,and building my first bike, Which is derived from a buellM2 Cyclone..Started with an engine and a Drop seat frame wich was made to my spec by a more experienced builder. would like to learn more about the skills and techniques required to build a frame so I value being a member here...Cheers Max
Location: Angus, Scotland

Brazing

Post by Maxthegardener » Mon Jul 16, 2012 3:57 pm

Iam hoping to master this method I like it had a go recently and although my set up is pretty basic just fluxed rods and a hobby sized torch and a small set of different sized nozzels I really had some fun, enjoyed it much more than using the mig, I understand you can get silicon bronze mig wire would like to give it a go... I guess you might call it old school but in the hands of the professional the end results are just amazing..

Anyway some pictures of proper brazing done By Brian of
http://www.silverstonesuperbikes.co.uk/xr69_5.html

check this out
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User avatar
Maxthegardener
Builder
Posts: 384
Joined: Tue Oct 25, 2011 11:28 am
SELF INTRODUCTION: Name is Max living in scotland ,and building my first bike, Which is derived from a buellM2 Cyclone..Started with an engine and a Drop seat frame wich was made to my spec by a more experienced builder. would like to learn more about the skills and techniques required to build a frame so I value being a member here...Cheers Max
Location: Angus, Scotland

Re: Brazing

Post by Maxthegardener » Mon Jul 16, 2012 3:59 pm

more..
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neale
NewB
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Joined: Tue Jun 19, 2012 12:04 pm
SELF INTRODUCTION: I have had an interest in choppers from the '70's when I was in high school, reading custom chopper mag etc, I have never had or built a chopper to date, I'm trying to learn, I am acquiring equipment (tube bender, oxy torch etc) and am trying to get started building up the skills and information I need to get started on building a chopper.
My current bike is a Yamaha XV1000, I would class it as a mild custom rather than a chopper, a lot of the useless (to me) bits have been removed and I am trying to modify and chop a few more things off to get it to a longer, lower, leaner machine with better performance (custom shortened rear shocks, refabricate forward controls and drag bars, try and get raked cups working on it etc), but IMHO it doesn't have the right type of frame to build a "proper" chopper on, so I am looking for a more suitable donor bike for the project.

Re: Brazing

Post by neale » Mon Jul 16, 2012 8:01 pm

Nice work.

NB: It's probably just my twisted mind, but the first thing I thought when I saw the picture of the front of the headtube was all that'd need to be the back of a naked woman would be a head (or back of a head, and spray of half a dozen lines of brass there would give you a blonde head ;^)

Neale

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curt
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SELF INTRODUCTION: hi everyone its me from the old bord hopeing to see everyone come here and all the newcomers . lets make this as good as the old one or even better . lookin foreward to seeing everyones projects continue and ill be continueing mine too
Location: utica new york

Re: Brazing

Post by curt » Mon Jul 16, 2012 8:23 pm

real nice
ever notice when you hit somethin or someone with a hammer you feel instantly better

hansgoudzwaard
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SELF INTRODUCTION: I was on the last board as bonustoolkit. I have changed that to my given name.
I started a project build there " File and Fit." I paln to continue that when I go back home in Dec. 2011. I first joined the board when Gary W had it in the year 2005. That was the time I really gained an interest in building chops. I have a long way to go, compared to some here.

Re: Brazing

Post by hansgoudzwaard » Mon Jul 16, 2012 8:28 pm

Looks very difficult. Lots of nooks and crannies. Quality work.

Kiwicaveman
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SELF INTRODUCTION: I am a mechanical engineer working in the oil and gas industry based in a gas treatment plant in south Taranaki new Zealand.
I live in New Plymouth, Taranaki, New Zealand
I have been riding bikes for over 40 years
Location: Taranaki, New Zealand

Re: Brazing

Post by Kiwicaveman » Fri Jul 27, 2012 4:05 am

Those are great photos, great skill and workmanship.

The term "Brazing" is not really accurate.
Brazing is the term used to describe a filler that flows by capillary action into a very close fitting joint.

The frames above look like he have been "Braze Welded" or "Bronze Welded". These terms apply to a filler wire that joins the parts without flowing by capillary action. A few decades ago it was called Bronze Welding, the modern term is Braze Welding.
I prefer to call it Bronze Welding (I'm very old school) but this is not an accurate term as the fillers are Brass (i.e. copper and zinc with other alloying elements like silicon, nickel, silver, etc). Bronze is copper and tin with other alloying elements.

I have used Braze Welding for many years to repair and modify steel tubular bike frames, mainly dirt bikes.
I use "Castolin 16 / XFC / MF" filler wire and a light weight oxy-acetylene welding rig / torch.
Castolin 16 is rated as "AWS A5.8 RB CuZn-D" under the American Welding Society system.
Castolin 16 is alloyed with 1% silver and nickel. It fits the definition of both a brazing filler and a braze / bronzing filler as it will flow by capillary action but by reducing the heat input (temperature) it can be built up into fillets.
It has a tensile strength of 700 - 800 MPa (about 100,000psi minimum).
It is reasonably easy to use and with some practice very good results can be obtained.

Cheers
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railroad bob
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I just returned home from a 2 week trip in New Mexico, have a few good pix, can't wait to share my off-highway traveling. Got to put 1400 miles on the scoot.

Best, Bob Davidson
Location: Alaska

Re: Brazing

Post by railroad bob » Mon Jan 14, 2013 12:36 am

Met a guy in Las Vegas who used brazing to build a frame. He did a copy of a vintage BMW frame, using smaller diameter tubing
for the primary members, which were inserted into a larger tube at the junctions and then brazed at the interface of the different tubes.

His bike looked really sweet.
Alaska - Land of the Individual and Other Endangered Species
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sleepyonthree
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SELF INTRODUCTION: All around tinkerer. Hotrods, cycles, trikes, gardening, cooking, women. Originally joined CBH Jan 29, 2006. Way to many projects, but, thats the fun. Live out in the boonies, less complaints from conformist neighbors.
Location: G,ville Florida

Re: Brazing

Post by sleepyonthree » Fri Feb 15, 2013 1:46 pm

Anyone thinking of doing some gas work might find the chart useful. Same chart Word and Exel.
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nothing is foolproof to a sufficiently talented fool

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