One dent effecting the whole horn?

[kehaulani]

This is exiting the valves, just before it curves into the bell flair, itself.
_________________
"If you don't live it, it won't come out of your horn." Bird

Yamaha 8310Z Bobby Shew trumpet
Benge 3X Trumpet
Benge 3X Cornet
Adams F-1 Flghn

[lipshurt]

Did the op ever say if the slide still moves easy?

Two story’s :

Last week I got a vintage horn that needed work but played stunningly great. Normally I do mist repairs but this one had a badly placed dent and I got got my good friend who is great with dents to work it out. He got it out beautifully. It so happens that the bell also had a bit of a bend to it and he massaged it straight without unsoldering the braces. I got it all cleaned and unstuck etc.... and it did not play well. Just like a mediocre vintage horn with problems and before it was amazing. Like the very first note you can tell and the horn was slotted flexible and above all, musical. Now it was hard to play musically. We talked about if the bell should be massaged straight with the braces intact or not. He elected to keep them intact. The braces were three piece floating braces. When heated them the back brace popped about 1/16th inch and the front brace moved slightly but with no gap. I massaged the bell dome more to perfectly straight and resoldered the braces. Result? Fixed. And that was not really that much tension in those braces. Subtle tension/big problem. Prob would not have been noticed if the horn was only average.

2nd story: I loaned my New York bach C trumpet to somebody and the 3rd slide fell out. No water key so it landed right on the end and put a pretty big dent. Friend was distraught so I agreed he could take it to a local highly respected tech of considerable fame. Whatever dent ball rod he used barely fit down the pipe and made a protruding line all the way down the tube. Ouch. The slide barely worked and he said it will break itself in. The whole horn played awful especially when playing actual music. I took the slide s as part and the de-dent process made the radius of the crook like .002 bigger. That is enough to never break itself in. I made a new slide out of large bore Bb parts (may have had a time of getting the right crook out of my boneyard) and made it right, aligned etc. Problem fixed.

Might not allot to the OP situation but the dent could easily change the radius of the crook a cause things seemingly unrelated. And when you notice is when you are playing music as opposed to test playing the instrument per se.
_________________
Mouthpiece Maker
vintage Trumpet design enthusiast
www.meeuwsenmouthpieces.com
www.youtube.com/lipshurt

[kehaulani]

Not responding just to you, lipshurt, because you're immediately preceding me.

Some of this, like Jim Becker referring to one specific place, is undoubtedly true but I wonder how much internet-speak minutia too. I sent my horn to Bobby Shew for a tweaking and he noticed the dents and specifically said that, where they were, they didn't affect anything.
_________________
"If you don't live it, it won't come out of your horn." Bird

Yamaha 8310Z Bobby Shew trumpet
Benge 3X Trumpet
Benge 3X Cornet
Adams F-1 Flghn

[LittleRusty]

[lipshurt]

Regarding Bobby shew say I g the dents did not affect anything. Probably true. A dent is not not nearly as important as tension in the body of the horn. Dents can cause tension, or removing dents can cause tension, and gentle pressure from a case that slightly bends the horn can cause tension, or removing the slight bends caused by the case pressure can cause tension. You can’t see tension usually, and sometimes when you think there is tension like obvious distortion, there might not be tension. Some brand new horns are assembled with quite a bit of tension, and some are not. Some people think that cryogenenic processing relieves tension. I’ve seen horns pop apart 1/4 inch or more when you heat the bell brace.
_________________
Mouthpiece Maker
vintage Trumpet design enthusiast
www.meeuwsenmouthpieces.com
www.youtube.com/lipshurt

[yourbrass]

I have had two instances of dents that improved a trumpet's performance.
One is a friend's YTR8335NY that has a dent on the bell tail, about an inch from the 1st valve casing. He said it played better after it got hit, so I left that one alone. The other was a Yamaha Chicago C that had a dent in about the same place. Since the bell crook had a crimp, much like old Bachs, I couldn't get to the dent without altering the crimp. I left that one alone as well.
_________________
"Strive for tone." -John Coppola
Edwards X-13
ACB MV3C /ACB A1/26 backbore
https://yourbrass.com/

[joe1joey]