Flare tool again

[kencombs]

Another flare tool question.  I have a good old style set but would like a 37deg male end.   Anyone know of a source?  And/or a complete 38deg that won’t break the bank. 
 

id like to add that capability up to 3/8 tube size.   Takes more parts but seems easier to do JIC/AN than doubles

[Sam Buchanan]

I've used this one many times, works very nicely.

 

https://www.aircraftspruce.com/catalog/topages/flaringtools2.php

 

[Sniper]

I don't believe 37 degree flares are DOT legal in a braking system nor are they legal in many states.  If you are subject to a yearly safety inspection, I am, AND you have a good inspector, which I prefer, they will fail you. 

[DJ194950]

Thought about legality of 37degree fittings and most used these days in racing applications for fluids. I have used them in new SS brake lines with 37 fittings adapted to fit use. Work great, but $$. PRETTY!

 

Not being up with the whys and why-nots of AN vs. other 37 degree fittings. Legalities?

 

Ran across this info.

 

https://www.mfcp.com/our-blog/an-jic-37-fla

 

Seems Sniper loves details so here you go.   ?

 

DJ

[Sniper]

The link got truncated  https://www.mfcp.com/our-blog/an-jic-37-flare-fittings

 

I do like to get into the weeds, especially on things I plan to do.  Don't really plan to do AN stuff, or any similar.  Did that in the past and for my use, it's a cost that is unneeded.  That was back in my "everyone is doing, I should do it" lemming days.  Now days I am more "everyone is doing, but why are they doing it" crusty old man type.

[Sam Buchanan]

I find it interesting that article was written by a Parker employee whose company is pushing the SAE fittings. Just sayin'........

 

I've been trusting my life to AN fittings for thirty years of building and flying my aircraft, they are certified by the FAA for use on general aviation aircraft fuel, oil, hydraulic and brake systems. I've also used them many times for automotive applications but wasn't aware some states frowned on them for automotive brakes. Alabama doesn't have safety inspections so watch your backside when you venture across our stateline....one of my AN-equipped vehicles may be about to crash into you!  ?

Edited February 7, 2023 by Sam Buchanan

[kencombs]

No Not all 37deg stuff is AN.  JIC is 37 also.  Usually, not always, AN fittings will be aluminum while JIC are steel or stainless.  Either are good for much more pressure than our brakes will ever see.   Not all AN/JIC is DOT approved, but some are. 

 

The DOT approval doesn't specify materials but does have a very rigorous test process that must be done to gain approval.  The cost of that process is why most of them aren't approved.  

 

The DOT approved 37deg stuff is many times more expensive that the others.  

As far as I can tell there is no DOT approval or regulation for or against 37deg hard lines, just the flexible parts. 

 

I have a need for 1/4, 5/16 and 3/8" 37deg tooling for a tractor project and will probably use 1/4 for my brake hard lines.   

 

Fortunately, inspection is not an issue in OK as we scrapped that worthless law many years back.   All it proved in our implementation was that the vehicle had adequate brake pedal and tread depth, all lights and wipers worked, ONE DAY of the year.   My Dad owned a salvage from 1960 though 1990.  An untold number of wrecks went in and out of inventory during that time.  Not one was caused by a defective vehicle.   OTOH, a high school classmate was killed by a driver with no brakes who ran a stop sign and broadsided the car she was in.   The car had a valid inspection sticker.

 

The problem with our law was that the original procedure spelled out in the law required far to much labor to execute for the statutory pricing.  So, shortcuts were taken and eventually no shops would sign up to be inspection stations.  Lawmakers looked at the alternatives, raise the price, get the  state into the inspection business or drop it.

 

 

 

 

[LeRoy]

9 hours ago, kencombs said:

 

I have a need for 1/4, 5/16 and 3/8" 37deg tooling for a tractor project and will probably use 1/4 for my brake hard lines.   

 

What sorta tractor project do you have going that's got hydraulic brakes?

[Sam Buchanan]

9 hours ago, kencombs said:

No Not all 37deg stuff is AN.  JIC is 37 also.  Usually, not always, AN fittings will be aluminum while JIC are steel or stainless.  Either are good for much more pressure than our brakes will ever see.   Not all AN/JIC is DOT approved, but some are. 

 Just as a datapoint, steel AN fittings are commonly used on aircraft (and maybe other applications?) where there is a concern that vibration might crack an aluminum fitting. Examples are oil coolers and oil pressure ports.

[kencombs]

1 hour ago, LeRoy said:

What sorta tractor project do you have going that's got hydraulic brakes?

Not brakes, hydraulics.  Small front loader and rear 3pt.

[Dave72dt]

Pretty much all the modern tractors are now running hydraulic brakes, some wet brakes, some dry.  Maybe some of the small compact tractors are running mechanical.

[LeRoy]

8 hours ago, Dave72dt said:

Pretty much all the modern tractors are now running hydraulic brakes, some wet brakes, some dry.  Maybe some of the small compact tractors are running mechanical.

My newest tractor is a 1941.