[Trombone-l] Repair Q in re Out of True Leadpipes

[Eric Swanson]

Bob,

I discovered years ago that if the leadpipe is bent, it will bend the  
inner slide tube off in the direction of the bend.
This, of course, screws up the alignment of the slide.  If the  
leadpipe is one that just press fits into the slide, it will not even  
face the same direction every time, so it will constantly be  
different.  Usually straightening the leadpipe is what I attempt to do.

If the leadpipe has a threaded ring on it and the threaded part is  
not soldered on straight, same problem.  It's just one thing after  
another isn't it?

Eric Swanson
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On Jun 6, 2009, at 9:22 AM, Bonemaster wrote:

> Here's a Q for you techs.
>
> I have several leadpipes for each of my horns, including factory  
> stock and
> aftermarket.
> Without any pattern, some seem to adversely affect the slide  
> function. It's
> demonstrable when you remove the suspect pipe and work the slide  
> without it,
> as the slide is smoother and quicker. There seems to be a dispute  
> about
> whether the pipe is 'true' depending on who you ask--the maker, the  
> pro
> player or the local repair guy, etc. This is above MY paygrade!
>
> Have any of you seen and experienced this and if so, what do you do to
> address it--confirm it a leadpipe issue or not, fix it?
>
>