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Building: Fisher Fury 4.3 V8 with Speeduino
posted on 19/5/15 at 12:17 PM
SAE & DIN brake pipe flares
I need to make up some new pipes to go to my repositioned M/Cs (Girling if that makes a difference). I want to get a reasonable tool (not the clamp
things that go for circa £15), but some say they only do SAE and others only do DIN. What are they, and what am I likely to need?
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Building: Built - Fury '06R1 ...now on with the mods
posted on 19/5/15 at 12:35 PM
You probably need DIN flares. SAE flares are used on imperial/UNF unions. DIN on metric unions
SAE are more conical in shape (the union is a bit countersunk) whereas the DIN flare is flatter. Now the official line is you should never mix the two
(on pain of death, disease, famine, etc). In reality an SAE flare will compress when fitted to a metric nut and seal perfectly well... I
wouldn't try the DIN under a UNF union though.
You need a DIN ™Powerhand" (sold under many different brand names) tool, SAE flares are still around but they haven't been used on any
European model launched since 1970 when the UK car industry started to go metric.
A DIN flare will seal on a UNF or a BSF fitting.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
With the "Powerhand" tool, I've noticed that the DIN version of the tool just comes with a single flare "bolt" where the
SAE comes with both a double and single "bolt"
Not sure if that means that DIN doesn't do double.
"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
Some Girling type master cylinders may need 3/8"unf pipe nuts and SAE flares , check by trying a brake pipe nut in the port. If you only want to
make up a couple of pipes I have a flaring kit you can borrow if you collect from near Addenbrookes Hospital in Cambridge
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Building: Fisher Fury 4.3 V8 with Speeduino
posted on 19/5/15 at 07:37 PM
quote:Originally posted by rusty nuts
Some Girling type master cylinders may need 3/8"unf pipe nuts and SAE flares , check by trying a brake pipe nut in the port. If you only want to
make up a couple of pipes I have a flaring kit you can borrow if you collect from near Addenbrookes Hospital in Cambridge
Thanks for the offer, but then I'd be denying myself the opportunity to buy a new tool I checked a nut from one of the M/Cs with a thread
pitch gauge at 1mm which hopefully means I've got metric ones.
quote:Originally posted by scudderfish
I need to make up some new pipes to go to my repositioned M/Cs (Girling if that makes a difference). I want to get a reasonable tool (not the clamp
things that go for circa £15), but some say they only do SAE and others only do DIN. What are they, and what am I likely to need?
Regards,
Dave
Dave - what did you do in the end? A search has only thrown up a few results mentioning DIN flares so I am non the wiser! I am doing my brake lines
soon so need to buy the right tool...
I will have metric fittings on my hard lines and expect I will need both male (into the master cylinder) and female (to the bulkhead joins) - but I
can't find any DIN tools that do a female fitting!
It's funny but my flaring tool which is one of the £15 type has done many metric & imperial fittings no bother (old landys tend to be a
right hodgepodge), I suspect there is some unnecessary over complication going on...
I used DIN flare for my hard lines. The DIN flare is a single stage flare as opposed to the SAE which is a double stage. One tool for producing the
flare and the male / female fitting is determined by the unions you use.
This article explains which flare should be used depending on union type.
I used one of the tools in the video and pic above and found it easy to use and consistent. Before I got one of those I struggled on with one of the
cheap fleabay items which I found hopeless.
quote:Originally posted by FamilyGuy
I used DIN flare for my hard lines. The DIN flare is a single stage flare as opposed to the SAE which is a double stage. One tool for producing the
flare and the male / female fitting is determined by the unions you use.
This article explains which flare should be used depending on union type.
I used one of the tools in the video and pic above and found it easy to use and consistent. Before I got one of those I struggled on with one of the
cheap fleabay items which I found hopeless.
So the DIN flare is the same regardless of whether it's a male 'nut' or a female 'nut' being used?
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I checked a nut from one of the M/Cs with a thread
pitch gauge at 1mm which hopefully means I've got metric ones.
