Is this the correct brake line?
 

I went to napa today and bought this:

http://www.napaonline.com/MasterPage...teel+Hydraulic

Went to arigas and got the Harris Silver Solder 45 and I had some flux from plumbing brazing. Cut, cleaned and fishmouthed the brakeline (grinded the coating off the top also) fluxed it up and got that sucker red hot but the solder is not sticking, its just balling up. Did I get the right brake line? Could it be the wrong flux melting too fast what do you guys think? I have soldered and brazed tons of copper with no issues. What am I doing wrong?
Note: In the description of the brake line it says: Material is copper fused. ??????

thats the stuff...

Sounds like you have the wrong flux. Go back to airgas and buy this stuff...
http://img148.imageshack.us/img148/7563/dscf1703nw3.jpg

And I use 45t it has a lower melting point than the 45, but the 45 should work too.

ya I will have too
 

Thats the only thing I could think of too. Almost immediately when I heat up the piece to be brazed my solder liquifies and actaully drips off onto the work bench. Is the flux supposed to do that so quickly or should it do it more around the time the material is ready to braze? I will get that stuff tomorrow and try it. Any other input would be GREAT!! thanks guys

This is the best way I can explain it. Make sure you use unlined brake line or solid rod. Clean all your joints, fish mouth the end of the tubes. Once you have it set up in your vise or on magnets apply the flux to the joint. Heat the joint until it’s hot. You’ll see the flux turn a silver color and the joint will start to turn red. Feed a little of the Silver solder into the joint. Only use the smallest amount required to hold the joint together. This makes the cleanest joint.

Awesome
 

Thats just the kind of info Im looking for, and I THOUGHT that was what I have been doing. What do you mean by "unlined brake line" ? Is the one I posted not correct and how do you tell if it is UNLINED?

I'm pretty sure the own you posted is unlined. It should be a metal color... no coating of any sort. Basically meaning bare metal.

Tin Coated?
 

Its weird it looks like it has something on it. It actually says "Tin coated" in the description of the link I posted. I wonder if that could be it? I better go look at a piece from a different parts store and see if it looks bare or the same as mine.

The brakeline I usually get has some sort of coating on it. Just break out the sand paper. Light sanding should be enough to clean the surface up and make the solder stick.

Illeagle, you got a PM."thumbsup"

Thanks nodnarb and 4u2nv. It was the flux. I was using regular copper pipe flux and it was melting right away. I got the white silver solder flux and that stuff doesnt melt until the brake line is almost red hot. The solder flows like crazy with that stuff. Thanks everyone I brazed my first tuber today and had a ball with it!!

Where's the pics?

My first tuber pics
 

Here are a couple I went and snapped for ya. I didnt do the chassis mounts yet becuase I dont OWN a crawler yet and dont know the exact dimensions. LOL. once I get one I will make a new chassis to spec. Tell me what you think, GOOD OR BAD!!!

http://i90.photobucket.com/albums/k2...6/tuber001.jpg

http://i90.photobucket.com/albums/k2...6/tuber002.jpg

http://i90.photobucket.com/albums/k2...6/tuber003.jpg

Hey man, that sorta look's like the chassis I build! I like it!"thumbsup"

Ya i know!
 

MrBurpsalot I am the guy you have been helping out on ebay (revorcracer). I finally got the right flux and now I'm off and running. What do you guys use for the bottom of the chassis? I was thinking flat stock around 1/2 in wide so holes can be drilled for different link mounts. Not sure how thick it should be or where to get it so any info would be great. OOOOOOOOOR, if you have a better idea please tell me. Should I just use the same tube and solder nuts to it?

I haven't done the skidplate on mine yet because I'm waiting for some delrin to come in but you can see the link mounts kind of... the fronts have been braced since this pic.

http://img98.imageshack.us/img98/3699/dscf1681ia1.jpg

This is it rolling...
http://img98.imageshack.us/img98/6521/dscf1766jn3.jpg

aluminum
 

Can you braze aluminum to brake line with silver 45?

I don't think so... because it's two different metals. You could braze nuts onto the brake line and then screw the aluminum onto that.

By the time you got the steel hot enough for brazing............you would probably be melting the aluminum (believe me, it doesn't take much). That, and the whole "dissimilar metal" thing would probably make it a bad idea.

so what do you use
 

I am trying to get some material for making my side chassis plates from the tuber down to the skid plate but am not sure what to use. I want it to look like the same shape as the stock axial ax10 chassis plates. The only thing I can think of is go get flat steel and cut it on angles and braze it back together, but there has to be a better option. What are guys using?