Brazing?

[David P]

Is there a club member who is 'dab hand' at brazing?

 

I have been fabricating a bracket to mount a fuel regulator on my N/A engine. This piece began life as an OEM fuel reg, which was brazed together, so dictates that brazing or soldering is the only way to continue.

 

I have only managed to find one person in my locallity who is geared up for the task, and he has now had 3 failed attempts.

 

After attempt 2, shown mounted on engine, it only had a minute hairline leak, but after attempt 3, it now has 3 good leaks, shown in close up.

 

After attempt 2, he told me not to go back with it again, so I dare not go back with it and ask for a fourth attempt.

 

Before I resort to silver solder, is there someone who can help out?

 

Thank you.

 

Edited February 24, 2010 by David P (see edit history)

[suprasurrey]

I can`t help with the brazing, but could certainly machine a new part from aluminium if you want. Please PM me if you`re interested;)

[absz]

you can buy the correct fittings from your local hydraulic hose shop. try googling HOSE&TUBLAR OR PIRTEK

 

 

EDIT ALSO SEE HERE http://www.speedflowshop.co.uk/banjos-and-banjo-bolts-58-c.asp

Edited February 25, 2010 by absz (see edit history)

[David P]

Thank's for the offer, the Mk1 was made from alumunium but failed badly.

 

It is difficult to feel the beginning of the thread with the right hand double banjo bolt passing through 3 Dowty washers and 2 hardline banjo's, the aluminium threads were not happy with this.

And the heat from TIG welding an aluminium nut on the side, made the pressed brass insert fall out.

 

This is the Mk2, made from a recycled, steel OEM fuel reg, it is 'robust', fits perfectly and works a treat.

 

I have been running around after this little piece of barn door engineering for week's.

 

All I need is someone to flux and heat the edges of this missaimed blob, and the job is jobbed.

 

Because it is not structural, I could maybe fix it with silver solder, but would sooner it simply brazed.

 

There must be someone who can still braze, we used to do this at school.

Edited February 25, 2010 by David P (see edit history)

[edge]

Maybe try a local school? They probably have all the kit too. Just give the teacher a nice bottle of teachers?

[Chewie]

I may be reading this all wrong so please do forgive me. It's all blobby because you didn't get it hot enough or put enpugh flux on teh joint. Anyway you can't braze aluminium. The brass part fell out because aluminium has a higher expansion coefficient than brass. You need to see a welder.

[RobSheffield]

Needs more banjo's

[David P]

Abs,

 

Since disecting the regulator the pieces goose chase has led me far and wide.

The large red banjo bolt and banjo on the side had to be ordered from U.S.

The 2 bottom banjo's and double length bolt were both special order by UK specialist from somewhere East.

These parts have been machined to fit and TIG welded together.

The complications of different threads and fittings when using International aftermarket items are frustrating, but I now have all the components I need, and more.

 

I shall be pleased when the job is jobbed.

[David P]

Chewy,

 

You've got the wrong end of the stick mate.

[absz]

might be wrong but looking at the fitting it seems that it was brazed first then there seems to be some silver solder on top of it.

the only way you will get a good weld on that now is by grinding all the material off again and have a fresh start.

[David P]

A picture without flash say's a thousand words.

 

[Matt _Aero top_]

i maybe able to sort this for you but not until i've had a word with one of the welders at work . but that won't be till next week now

[David P]

Matt,

 

This bracket game has been going on for about 4 months now, 'next week' is warp speed to me.

 

If you could ask, I could post it down in a Jiffy.

 

'Brazing has gone out of fashion', I must be getting old

 

Thank's for helping

 

David

[Matt _Aero top_]

Does it have to be brazed or can it ground back and tig welded , as i can guarantee it would not leak this way as we make all our own hydrolic piping and alot of the joints on the bigger pipe work has its joints and flanges tig welded on and pressure tested .

[chrispot]

Is there a club member who is 'dab hand' at brazing?

 

I have been fabricating a bracket to mount a fuel regulator on my N/A engine. This piece began life as an OEM fuel reg, which was brazed together, so dictates that brazing or soldering is the only way to continue.

 

I have only managed to find one person in my locallity who is geared up for the task, and he has now had 3 failed attempts.

 

After attempt 2, shown mounted on engine, it only had a minute hairline leak, but after attempt 3, it now has 3 good leaks, shown in close up.

 

After attempt 2, he told me not to go back with it again, so I dare not go back with it and ask for a fourth attempt.

 

Before I resort to silver solder, is there someone who can help out?

 

Thank you.

 

http://www.mkivsupra.net/vbb/attachment.php?attachmentid=105725&d=1267046002

http://www.mkivsupra.net/vbb/attachment.php?attachmentid=105724&d=1267046002

 

I can braze it for you but can only do it at weekends or could get one of our fridge engineers to do it during the week, as I am working in leicester in the week, personaly if you paid the guy to braze it he should sort it, if any good for you let me know, regards chris

[David P]

Chris,

 

That's perfect

 

There is no hurry for this, I just seem to be located in a brazerless zone?

 

pm your address, and I will drop it in the post.

 

Thank you very much, that's brightened up a dull day.

 

Matt,

 

Please excuse me, that was an offer I couldn't refuse.

[David P]

Matt,

 

The OEM fuel reg I disected and re-designed had originally been constructed by brazing, you can't weld over brass.

 

Thank's for the input though, looks like the job is now in good hands.

 

Hope that's O.K. with you?

[Matt _Aero top_]

Ok mate don't worrie i just thought i might be able to help but its fine by me if someone else does it , as i haven't even seen the welders at work yet .