Oily bubble leak

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Roberto28
Posts: 13
Joined: Sun Dec 30, 2018 5:26 pm

Oily bubble leak

Post by Roberto28 »

Hi guys,

At the beginning the year I had my horn‘S f-attachment converted into an Instrument Innovations rotor system. So the Brass technician had to take the old f-attachment out and resolder new parts.

Tonight while lubricating the rotor I noticed a bubble at one of the joints where the new soldering was done. I was pressing down the F-tuning slide without activating the trigger.

Is the bubble normal? Should I be concerned?
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Burgerbob
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Re: Oily bubble leak

Post by Burgerbob »

Might be leaking at that joint. For future reference, it's a good idea to always activate the valve when moving the F slide.
Aidan Ritchie, LA area player and teacher
Roberto28
Posts: 13
Joined: Sun Dec 30, 2018 5:26 pm

Re: Oily bubble leak

Post by Roberto28 »

Yes, I agree about activating the trigger. I see that now. Do you think I need have that looked at, or should I just let *slide*?
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Burgerbob
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Re: Oily bubble leak

Post by Burgerbob »

I might have it checked out. If you can see it, it might be a serious enough leak to effect how the horn plays.
Aidan Ritchie, LA area player and teacher
ZacharyThornton
Posts: 477
Joined: Fri Mar 23, 2018 7:51 am

Re: Oily bubble leak

Post by ZacharyThornton »

You should have that checked out.
hornbuilder
Posts: 854
Joined: Wed May 02, 2018 9:20 pm

Re: Oily bubble leak

Post by hornbuilder »

A bubble at a solder joint indicates a leak.
Matthew Walker
Owner/Craftsman, M&W Custom Trombones, LLC, Jackson, Wisconsin.
Former Bass Trombonist, Opera Australia, 1991-2006
Bonearzt
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Re: Oily bubble leak

Post by Bonearzt »

There really isn't enough pressure build up when you pull the slide to cause problems.
Eric Edwards
Professional Instrument Repair
972.795.5784

"If you must choose between two evils, choose the one you haven't tried yet."
"Rather fail with honor than succeed by fraud." -Sophocles
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Kingfan
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Location: Cleveland, OH

Re: Oily bubble leak

Post by Kingfan »

Duct tape. Fixed! :D
I'm not a complete idiot, some parts are still missing! :D
Greg Songer
King 606, King 3B-F: DE LT101/LTD/D3
King 4B-F: Bach 5G Megatone gold plated
King 2107 bass: DE MB109/MB J/J8 King
Bonearzt
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Re: Oily bubble leak

Post by Bonearzt »

Kingfan wrote: Thu Oct 08, 2020 10:53 am Duct tape. Fixed! :D
Did you put Bondo underneath? Or Superglue?
Eric Edwards
Professional Instrument Repair
972.795.5784

"If you must choose between two evils, choose the one you haven't tried yet."
"Rather fail with honor than succeed by fraud." -Sophocles
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BGuttman
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Location: Cow Hampshire

Re: Oily bubble leak

Post by BGuttman »

Bonearzt wrote: Thu Oct 08, 2020 2:22 pm
Kingfan wrote: Thu Oct 08, 2020 10:53 am Duct tape. Fixed! :D
Did you put Bondo underneath? Or Superglue?
JB Weld :evil:
Bruce Guttman
Merrimack Valley Philharmonic Orchestra
"Almost Professional"
Posaunus
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Location: California

Re: Oily bubble leak

Post by Posaunus »

Bonearzt wrote: Thu Oct 08, 2020 2:22 pm
Kingfan wrote: Thu Oct 08, 2020 10:53 am Duct tape. Fixed! :D
Did you put Bondo underneath? Or Superglue?
Plumber's Putty? Chewing gum! :idea:
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Kingfan
Posts: 1132
Joined: Wed Apr 11, 2018 8:32 pm
Location: Cleveland, OH

Re: Oily bubble leak

Post by Kingfan »

Posaunus wrote: Thu Oct 08, 2020 3:35 pm
Bonearzt wrote: Thu Oct 08, 2020 2:22 pm

Did you put Bondo underneath? Or Superglue?
Plumber's Putty? Chewing gum! :idea:
All of the above. You can't be too careful! :mrgreen:
I'm not a complete idiot, some parts are still missing! :D
Greg Songer
King 606, King 3B-F: DE LT101/LTD/D3
King 4B-F: Bach 5G Megatone gold plated
King 2107 bass: DE MB109/MB J/J8 King
timothy42b
Posts: 1467
Joined: Tue Mar 27, 2018 5:51 am
Location: central Virginia

Re: Oily bubble leak

Post by timothy42b »

BGuttman wrote: Thu Oct 08, 2020 3:26 pm
Bonearzt wrote: Thu Oct 08, 2020 2:22 pm

Did you put Bondo underneath? Or Superglue?
JB Weld :evil:
JBWeld stopped the leak at the top of my daughter's Volvo radiator and it held several years, was still going strong when we eventually junked the car. (blown head gasket on a 1991 with some other problems, it was time to move on).

If it can stop the pressure and heat of a Volvo, pretty sure it will hold against breath pressure.

Of course no tech will ever want to work on your horn again! That stuff is a pain to get off. If you even can.
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