Yamaha Bass Trombone slide question

[jhousdan]

I own a 613G. I've somehow developed a tiny spot of red rot on one of my outer slide tubes, which means eventually it will have to be patched or the tube replaced all together... both viable options and both easily done.

My creative "what if" brain got me to thinking though... I know the older Yamaha basses share a similar bore size (.562) with the current Xeno line, but what about the slide receivers? Could I, in theory, replace my old slide with a new Xeno one? I know there's a difference in the tubing in the valve sections (I asked about that here before), but I was uncertain if that extended to the slide receiver section or not.

I've played a few different 830s, but I never really thought to compare parts with my 613, and I'm lousy at keeping track of most measurements, so I thought I'd reach out to TCs intelligentsia and borrow from your collective wisdom.

[Burgerbob]

I think all the horns after the 613G have the same tenon. But I wouldn't be totally sure, either!

[ithinknot]

I've somehow developed a tiny spot of red rot on one of my outer slide tubes, which means eventually it will have to be patched or the tube replaced all together... both viable options and both easily done.

And in this case "eventually" might outlast us all. Have it chem cleaned if you don't already (not ultrasonic!) and don't worry about it.

[jhousdan]

I think all the horns after the 613G have the same tenon. But I wouldn't be totally sure, either!

LOL you were the one I was hoping might have an answer, I know you've played with a lot of different Yammies (and basses in general)

[jhousdan]

I've somehow developed a tiny spot of red rot on one of my outer slide tubes, which means eventually it will have to be patched or the tube replaced all together... both viable options and both easily done.

And in this case "eventually" might outlast us all. Have it chem cleaned if you don't already (not ultrasonic!) and don't worry about it.

She's definitely due!

[ghmerrill]

Sometimes (often?) red spots are misidentified as "red rot" (which itself is at best an ambiguous term). Prior to getting too excited about it and taking dramatic steps, it's good to determine what you're really dealing with. It may just be the red oxide of copper, and not the truly fearsome "red rot" that is a de-zincification phenomenon (leaching of zinc out of the brass alloy).

"What is 'Red Rot'?" : https://www.hornmatters.com/2011/05/what-is-red-rot/

A good cleaning is probably the best first step.

[MrHCinDE]

Worth checking out with a tech first if it really is, even then you’re right not to be too concerned at the moment,

If you have access to a Bach 50 (or 42) slide, there‘s a chance they would also fit a Yamaha. At some (not all!) points in time the Bach and Yamaha bass trombone slide fittings were compatible.

My 612RII connector was compatible with a 42/50 slide, though the Bach slide was very slightly too long for our A=442 tuning over here. My older Yamaha 321 was not compatible and it may have changed again with newer models/years.

[jhousdan]

Worth checking out with a tech first if it really is, even then you’re right not to be too concerned at the moment,

If you have access to a Bach 50 (or 42) slide, there‘s a chance they would also fit a Yamaha. At some (not all!) points in time the Bach and Yamaha bass trombone slide fittings were compatible.

My 612RII connector was compatible with a 42/50 slide, though the Bach slide was very slightly too long for our A=442 tuning over here. My older Yamaha 321 was not compatible and it may have changed again with newer models/years.

It's definitely a problem for future-me and not current-me. It was more just a case of thinking out loud. And as I said, she's definitely due for a chemical cleaning, so that'll probably put it to bed.