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It would affect response more than anything else... not sure it would do much with intonation, especially not on something like a 186. Best option would be to re-buy the mouthpiece with the correct shank (unless it's a vintage C4, that shouldn't be too tricky). Otherwise, Euro to Amero can be done by a tech to use a lathe and shave off whatever thousandths of an inch necessary to make it the right size (Euro > Amero). Changing the receiver seems like overkill.

electrical tape?

GregTuba79 wrote:

pecktime wrote:electrical tape?

I want it to be proper and permanent if possible...

Gorilla tape.

If you want, I can install a sleeve and replate, and it will look original.

Older 186's do not have the "current" Euro shank however. They're about the same size but slightly less taper. I wouldn't want to do all that work and have it be wrong.

A favorite mouthpiece can be re-shanked or sleeved to whatever size you want.

I've had a few done over the years at Dillon Music and they came out beautiful, fit as intended, and play/sound just fine. You cannot tell that any modification has been made to them. It is much cheaper and easier to do that having the receiver replaced on the tuba.

Tom wrote:A favorite mouthpiece can be re-shanked or sleeved to whatever size you want.

I've had a few done over the years at Dillon Music and they came out beautiful, fit as intended, and play/sound just fine. You cannot tell that any modification has been made to them. It is much cheaper and easier to do that having the receiver replaced on the tuba.

Though if the receiver's an odd size, you could amortize its replacement against multiple mouthpieces if there's a chance you'll ever want to play some other mouthpiece.

From my experience with bass trombone shank/receiver match, getting the match really right makes a real difference - but in that case, I found a mouthpiece I liked with the right shank. Compared to the alternative, i.e. had I changed the receiver to fit "the same" mouthpiece with a different shank, that choice has consequences on how the result will play, doesn't it? Or could, anyway, depending on the dimensions of the airway. It's something I wonder about when we talk about small shank Eb tubas, whether grafting a large shank on there is simply a matter of convenience and economics.

russiantuba wrote:Would any repair technician be able to do this?

I doubt it! But it seems to me the big advantage if you can find a local shop that can, is that with the tuba on hand, they don't have to guess what shank taper will fit.

GregTuba79 wrote:Ha Gorilla tape, really? It looks like standard duct tape and says it is water resistant...I wonder if it would actually work by adding 1 layer at a time until the mpc fit the receiver?

Yes. Because it is rather thick compared to electrical, scotch, masking, and painter's tape, one neatly trimmed layer should be all you need. I think a roll is @ $3.00 at Wally World, much cheaper than having the receiver rebuilt.

I concur with the taper. I have a slight wobble in the receiver of my @1971 "Bessophone."