Noisy Bach trigger mechanism

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dukesboneman
Posts: 921
Joined: Mon Apr 02, 2018 4:40 pm

Noisy Bach trigger mechanism

Post by dukesboneman »

I have a 42BO & and 50B3. Love the horns except The Trigger mechanisms are all metal and sooooooo noisy.
Anyone had theirs changed out for something quieter?
Who did the work
Thanks
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hyperbolica
Posts: 3880
Joined: Fri Mar 23, 2018 7:31 am

Re: Noisy Bach trigger mechanism

Post by hyperbolica »

STRAAAAAAANG!

But seriously, string is so quiet, durable and easy to fix/adjust yourself.
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SamBTbrn
Posts: 127
Joined: Tue Oct 10, 2023 9:39 am

Re: Noisy Bach trigger mechanism

Post by SamBTbrn »

Had Miniballs put on my bach 36B, now it's lovely and silent. Marcel at Atelier Pfeiffer in den Haag did the work, cost me less than €20. But any good tech will be able to swap out for Miniballs no problems.
AtomicClock
Posts: 900
Joined: Thu Oct 19, 2023 8:01 pm

Re: Noisy Bach trigger mechanism

Post by AtomicClock »

A Clontz linkage (thayervalve.us/store) can be installed without tools. I love mine.
Shortly after I installed it (25.years ago), I stumbled across an excellent writeup on how to properly maintain the stock linkage so it would stay quiet. That could have saved me a few dollars, but I never gave it a try.

A side effect.of the Clontz linkage is it changes the lever arms slightly, shortening the throw; a nice bonus.
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rudytbone
Posts: 52
Joined: Sat Feb 17, 2024 6:27 pm

Re: Noisy Bach trigger mechanism

Post by rudytbone »

If the linkage was once quiet and now noisy, check the bumpers. If older, they get hard and can cause that "clank". I replaced bumpers that were ~30 years old and the difference was amazing. Same Bach linkage, so much quieter. Easy and cheap to do.
Olds R-20, Super, Custom, O-20 Valve/Slide
Bach 42 LT-BOGH
King 2102
brassmedic
Posts: 1399
Joined: Fri Dec 14, 2018 12:07 pm

Re: Noisy Bach trigger mechanism

Post by brassmedic »

The original is actually nice and quiet if packed with grease and adjusted correctly.
Brad Close Brass Instruments - brassmedic.com
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dukesboneman
Posts: 921
Joined: Mon Apr 02, 2018 4:40 pm

Re: Noisy Bach trigger mechanism

Post by dukesboneman »

Brassmedic, I wish I had the old style Ball & Socket linkage. I liked those and yes they were quiet
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Burgerbob
Posts: 6219
Joined: Mon Apr 23, 2018 8:10 pm

Re: Noisy Bach trigger mechanism

Post by Burgerbob »

Well, that's the question. Is it the old style or the awful minibals? Those wear out and are just as noisy and can't be adjusted.
Aidan Ritchie, LA area player and teacher
bassboneman69
Posts: 288
Joined: Wed Aug 15, 2018 7:44 pm

Re: Noisy Bach trigger mechanism

Post by bassboneman69 »

Softer bumpers helpful?
I know when they get old they get petrified!
My 50B3O had a decent f attachment trigger BUT the Gb/D trigger sounded like a meat grinder…
Mini-balls kept from grease destroying the collars on my shirts, so there’s that.
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paysonmcc
Posts: 68
Joined: Tue May 21, 2019 4:40 pm

Re: Noisy Bach trigger mechanism

Post by paysonmcc »

I have used the Selmer/Bach red tuning slide grease applied directly to the ball mechanism for years. It's quiet, easily replaced, and I've never noticed any sluggishness from the linkage. Just make sure to clean off any old grime before applying it.
brassmedic
Posts: 1399
Joined: Fri Dec 14, 2018 12:07 pm

Re: Noisy Bach trigger mechanism

Post by brassmedic »

dukesboneman wrote: Wed Jul 08, 2026 2:38 pm Brassmedic, I wish I had the old style Ball & Socket linkage. I liked those and yes they were quiet
Oh, I see. Yeah, for some reason they use fake miniballs on Bach trombones while Conns use real miniballs. The fake ones aren't as good. Could replace with real miniballs or the nylon ball and socket kind.

I would first make sure it isn't something else making the noise, like hardened bumpers, too much play in the valve, Loose stop arm screw, loose bumper plate screws, lever hinge worn, or bearing not fully seated or loose fitting.
Brad Close Brass Instruments - brassmedic.com
tbonesullivan
Posts: 1935
Joined: Tue Jul 02, 2019 9:06 am

Re: Noisy Bach trigger mechanism

Post by tbonesullivan »

Ahh yes, those lovely fake miniballs, and I think the screws for them are too big for easily retrofitting real miniballs. Bach has been using them for decades, and for some reason won't make the tolerances better. I also love how often the center piece often can't be tightened on both ends and still work, like the one on my 36.
David S. - daveyboy37 from TTF
Bach 39, LT36B, 42BOF & 42T, King 2103 / 3b, Kanstul 1570CR & 1588CR, Yamaha YBL-612 RII, YBL-822G & YBL-830, Sterling 1056GHS Euphonium,
Livingston Symphony Orchestra NJ - Trombone
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