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Q&A > General Tech Advice > brake lines > Community Forums > Mustang Forum Australia - Mustang Tech

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bages
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saw some brake lines to suit 66 coupe on evilbay that werent rigid steel lines, wondering if anyone has used these flexible lines assuming? they are legal to be used here?


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JC074
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Hi dude... i looked into these - now way I was gonna get em past the engineers nor DPi for that matter....

I went to Enzed... bought bender and flaring tool - doneski Smile

JC


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mikes68
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JC074 wrote
Hi dude... i looked into these - now way I was gonna get em past the engineers nor DPi for that matter....

I went to Enzed... bought bender and flaring tool - doneski Smile

JC


Jas, did the flaring tool do the double flare?


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JC074
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wats a double flare?


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bages
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Thanks JC thought that might be the case......


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mikes68
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JC074 wrote
wats a double flare?


Umm, you better check the work done then. It is illegal to fit brake lines with a single flare for good reason. The single flare can split or crack (over time) and cause leaks with the obvious result. The double flare folds the tube inward kinda before the second step flares it out leaving 2 layers of metal that won't split or crack - much safer...


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boofhead
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Clutch lines use a single flare and brakes lines use a double. As it indicates you have to use the flaring tool twice (with the correct shapes) to get for end formed correctly. Once you have the tool the line is cheap.


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hybrid
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With a double flare, you should have to use a small piece added to the flare tool to mushroom the end of the line, then flare it normally afterwards.

If you haven't done that, then you're asking for trouble, and it's also not legal.


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jusTANG
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Being relatively uneducated with car stuff I had to research to see what was being discussed. Found this on another forum and thought it may be handy to others so I have copied it across.


All brake flare fittings should be a double flare. Single don't support the pressures necessary.



Single flare is an outward bell in the end of the line. A double flare is a single with the lip rolled back inward.



A single flare would be what you have at Fig. 4 in the above diagram.

Here is a cross section of the 2 (Single at the top, doube at the bottom)



If its wrong at all just tell me and I will edit it out.


Cheers,
j

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gbx78
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i was just googling what was being discussed here as my lines are new and i dont know if they are single or double flare, so upon disaassembly i will check and these pics are good explanations .. thanks hybrid


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Pinto-Pete
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correctamundo j, go to the top of the class....., Bow Down but dont take ya books cause ya wont be stayin.... Finger


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gbx78
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Wooops sorry justang posted the pics. Thanks J Smile off to a good start 2012


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jusTANG
PatCH the Platypus

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all good mate....


Cheers,
j

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mikes68
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jusTANG wrote


A single flare would be what you have at Fig. 4 in the above diagram.



Just a small note Justin, the single flare does not get rolled at all (as is shown in figure 4) but maybe you are explaining that figure 4 is the starting point for a single flare...


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jusTANG
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just copied it across from another forum.......happy for you to point it out


Cheers,
j

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