brazing vs welding: are both enough for a chassis

[jebster]

i'm thinking about building a truggy and want to do the tubework myself. the question I have is whether or not brazing brake line going to be strong enough. I can do brazing and have the equipment but I was concerned about strength. the base of my project will be an scx10 frame.

[ickabob]

Originally Posted by jebster

i'm thinking about building a truggy and want to do the tubework myself. the question I have is whether or not brazing brake line going to be strong enough. I can do brazing and have the equipment but I was concerned about strength. the base of my project will be an scx10 frame.

Yes braze that bad boy, all of my chassis are strong as heck

[stelerzman]

I don't see why it wouldn't hold up, it's not like your going 40mph then crash into a building. I'm going to braze up a roll bar for my Jk and if that goes well then I'll fab up at full tuber for my Foff.
I say go for the brazing because you already know how to do it.

[jebster]

Originally Posted by ickabob

Yes braze that bad boy, all of my chassis are strong as heck

nice work. is that made to fit to an scx10 frame? do you have a build thread with more pics? my plan was to make a modular frame. rear tubework like yours then an exo-cage / front bumper over the cab that swings up to give me access to the electronics.

Originally Posted by stelerzman

I don't see why it wouldn't hold up, it's not like your going 40mph then crash into a building. I'm going to braze up a roll bar for my Jk and if that goes well then I'll fab up at full tuber for my Foff.
I say go for the brazing because you already know how to do it.

I appreciate the advice. have to start laying out my plans and get the torch fired up!

[ickabob]

Originally Posted by jebster

nice work. is that made to fit to an scx10 frame? do you have a build thread with more pics? my plan was to make a modular frame. rear tubework like yours then an exo-cage / front bumper over the cab that swings up to give me access to the electronics.



I appreciate the advice. have to start laying out my plans and get the torch fired up!

Yes it's a bolt on that fits scx10 I have a few build threads here, look at mark reels sick f350 build for starters or 71baja, ill post up the others later tonight.

[4starCstms]

Brazing is as strong as a weld when done correctly.

Takes a little practice- but is easy.

[ickabob]

Just a few of mine over the years, take your time and you'll get it in time.

[jebster]

I appreciate all the input. and jckabob, I will be looking up some of the threads. the pics are in the ballpark of the type of things i'm looking to do.

[meatmonkey]

I'm very unskilled at brazing, and never really considered brake line all that structural.

That said, I've witnessed other peoples properly brazed, properly triangulated brake-line exo's survive ridiculous tumbles without harm.

I'd say the strength is completely dependent on the builder. If done properly, it's plenty strong.

That is a sick Toyota Truggy BTW!

[crawl-o-matic]

Welding thin walled tubing is very difficult to say the least

[Jason Gross]

Common welding wire is in the 60-70,000lb range. You can get brazing rod well into the 80,000lb range easily. Like everyone said, done right it's as least as strong as your average weld although joint design plays a big roll in final strength. Brazing also has the added bounus of being able to join dissimilar metals. One thing I haven't seen brought up much is silver soldering, which is also plenty strong (not to be confused with the solder you use to do electrical or plumbing work, totaly different) and can be done at lower tempratures. IIRC the technical breaking point between soldering and brazing is around 800 deg. so you can silver solder with a lower heat input to your parts than you can with brazing. If you have the equipment you could also tig the parts but your looking at some bucks to get started and lot and lots of time to practice. I've seen guys tig soda cans together and one guy at the shop had two pieces of aluminum foil that he welded together framed on his garage wall, so no problem with thin stuff there.

[trwelds]

Say a weld or braze on 2" pipe is done it will have tensile strength of not xx,xxx lb but psi or lb per sq inch. So same weld or braze on 1/4 inch done right and good quality is same strength. Braze vs weld, braze first as welding takes more skill on the smaller stuff. Surf through some of the builds on here and you can see a lot of brazing and set ups being used.

As a welder for a living I have the tools and skills and have tig welded soda cans together and other thin small jobs but still get frustrated welding tig on some of this stuff.

Wealth of knowledge and information can be found here though.

[Drail]

this is all i use. and when asked how strong it is..i stand on my rig's
nuff sed. Drail



and a few rigs