mirafone valve screw solutions?

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bradadams
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mirafone valve screw solutions?

Post by bradadams »

missing screw on a mirafone tuba valve - does anyone know of alternative solutions? - cannot find the part - any help is appreciated!


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arpthark
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Re: mirafone valve screw solutions?

Post by arpthark »

Which screw? There are a few, depending on the model.
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bloke
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Re: mirafone valve screw solutions?

Post by bloke »

Center/stem/stop-arm screws (unless a super-old tuba, and maybe even those as well) are M3x.5 thread.

non-oem lifetime supply (steel) $5.37 plus shipping:
https://www.mcmaster.com/90604A722/

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oem single screw (nickel-brass) 4.00 plus shipping:
https://hornguys.com/products/miraphone-tuba-parts

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arpthark (Thu Mar 13, 2025 4:42 pm) • York-aholic (Thu Mar 13, 2025 6:34 pm)
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Re: mirafone valve screw solutions?

Post by the elephant »

The cork plate screws are more of an issue as they are a size that is hard to find in the US. You won't find it at Ace Hardware.

M2.6x0.45
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York-aholic (Thu Mar 13, 2025 6:35 pm)
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bloke
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Re: mirafone valve screw solutions?

Post by bloke »

These may be a wee bit too long, and (me?) I'd prefer to pick the lock washers off of them...but (again) only a dime each for enough for an impressive fleet of Miraphonia...

https://www.ebay.com/itm/404953374935

more misc. info:

The EARLY 1960's carriage rod knurled nuts are ALSO this same smaller thread size whereby the more-recent ones are the M3x.5

Miraphone will still supply the old/smaller-size knurled carriage rod nuts to peeps like Wade and me...but (at least I'm not - other than macro - such as importing several new BELLS at one time offering only "dock pickup") I'm assuming that neither of us is interested in being a "minutia Miraphone parts dealer".

bloke "Rotary tubas play out-of-tune without knurled nuts on their carriage rods." :huh:
--------------------------------
Editing just to see if anyone ever notices an edited post:

Has anyone experimented with using rubber chickens as euphonium mutes?
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Re: mirafone valve screw solutions?

Post by York-aholic »

bloke wrote: Thu Mar 13, 2025 5:43 pm
--------------------------------
Editing just to see if anyone ever notices an edited post:

Has anyone experimented with using rubber chickens as euphonium mutes?
Yes I have. However the euphoniumist was about 15 feet away when I threw the rubber chicken, striking a bell rim rather than it going down the bell. The guy stopped playing so I guess the rubber chicken did in fact work to mute the sound.
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bloke (Wed Dec 17, 2025 8:46 am) • arpthark (Wed Dec 17, 2025 7:54 pm)
Some old Yorks, Martins, and perhaps a King rotary valved CC
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Re: mirafone valve screw solutions?

Post by prodigal »

Thanks, I need one too.
1960 186CC
B&S 5099/PT-15
Cerveny 653
A bunch of string instruments
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Re: mirafone valve screw solutions?

Post by prodigal »

How about the knurled nut size for the carriage rod, I could use one too.
1960 186CC
B&S 5099/PT-15
Cerveny 653
A bunch of string instruments
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Re: mirafone valve screw solutions?

Post by bloke »

prodigal wrote: Wed Dec 17, 2025 7:41 am How about the knurled nut size for the carriage rod, I could use one too.
very old (Miraphone) - 2.6mm thread
since a long time (Miraphone) 3mm thread

many old (random) - 2.6mm thread

other old (random) - bloke ain't edgykated enough to know.
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