Brake pipe flare

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Derek Clews

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Mar 19, 2021, 12:30:29 PM3/19/21
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Hi All,

Can anyone confirm the Q Coupe and 2+2 (i.e. Fiesta Mk2) Brake system?  I want to get a flaring tool and think it is using a 4.75 DIN ISO 3/16" Single Bubble Flare.  Is that correct?

Cheers

Derek

Jim Hearne

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Mar 19, 2021, 12:42:34 PM3/19/21
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I think the Imperial and Metric brake pipe sizes are compatible, still seems to be called 3/16”
I’ve certainly not bought a specific imperial or metric tool, just a brake pipe tool.
Some of the joints are double flare so make sure your tool can do those.
 
Get a decent tool, the cheap ones are very hard to get proper flares.
This sort always seem to be poor.
 
I had one similar to this for a while, it was very good as long as you didn’t need to take the pipe out and put it back in again, it wouldn’t  always grip if you tried that.
 
I’ve got one of these now, very good but pricy.
 
Jim
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Jim Hearne

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Mar 19, 2021, 12:57:50 PM3/19/21
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Ok, after some googleing, what i thought was a double flare is actually called a bubble flare.
So, the Quantums have mostly bubble flares but there are some double flares on there as well.
 
Jim

Derek Clews

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Mar 19, 2021, 2:26:24 PM3/19/21
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Hi Jim,

Thanks.  Yes, some do multiple types and others don’t.  Seems to be largely SAE double and single flare and DIN single the double ‘bubble’ type.   The car builder link you have says SAE only.  The cheap ones all seem to have a selection for most things.  Maybe the expensive ones do as well.  The pic is of a ready made pipe I bought.  This works fine but a shorter length would be neater and I could later make up my own, for the 2+2 renovation.  The finish is a bit rough and ready, maybe that is the only issue making it difficult to identify.  

Think you are right about the pipe sizes just stated in mm.   I think there may be full metric threads and hexes about on e.g. BMW’s etc.  

TheSykes-Pickavant looks nice. 

Derek







list...@liberator-systems.co.uk

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Mar 19, 2021, 2:26:31 PM3/19/21
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I think the Fiesta uses DIN/ISO - I have just been doing some saloon rear lines and braided hoses and used a DIN tool (Trident). If you do need to make the female concave type flares (ice cream cone shape) you will need the SAE type tool. I am pretty sure the SAE convex male flare will seal OK in a metric DIN concave seat as flare just deforms as the union is tightened (with copper or copper nickel pipes at least). 

John

susanandmartin

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Mar 19, 2021, 3:17:43 PM3/19/21
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Hi Derek. Jim is absolutely spot on (as always ) with his advice. I tried one of the first (multi sizes) link ones a few years back – utter rubbish, I’d have done better using a centre punch ☹

The second, hand -held one is a direct copy of my (very old) Sykes-Pickavent hand-held one and they work very well. As Jim says, the flare has to be done in one action. To do a double flare the flare tool is removed after the first flaring, and turned around to do the second part to complete the double flare. I’ve used mine for pipes of at least 3 kit cars including the Quantum, including being doubled-up using it by hand under the Calvy Mitchel many years ago. A first-class piece of kit. The expensive SP one may be easier to use/slightly better? But can’t be used when the operator is on their back under the car! Oh- ALWAYS remember to put the threaded fitting on the pipe before doing the flare ………. Don’t ask me how I know 😊

Martin Scott

 

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susanandmartin

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Mar 19, 2021, 3:22:00 PM3/19/21
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Please ignore my comment regarding the expensive SP one, as I only looked briefly and of course it is designed for use under the car. The CBS one (like my early SP hand-held one) can also be clamped in a vice for easy use.

 

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