7th position scratchiness

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Basie1955
Posts: 91
Joined: May 15, 2018

by Basie1955 »

I’ve got a couple horns with fast and smooth slides but

between 6th and 7th they bind up a bit and there’s

some metal on metal scratchiness. I know this is common

issue especially for players who don’t play a whole lot

out there. Of course the awkward slide weight there

probably causes alignment issues over time but I’d appreciate

some thoughts on this. Seems like a lot of players lift the weight

ever so slightly in that extended area. But if overdone

it will start bending things out of alignment.

Thanks
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harrisonreed
Posts: 6479
Joined: Aug 17, 2018

by harrisonreed »

My thought on it -- I avoid 7th as much as possible. It's there for low C and for the rare occasion that it makes a passage easier. I don't think the trombone sounds particularly great in 7th.

When you do use it, you can angle the horn down which will reduce the stress on the tubes.
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BGuttman
Posts: 7368
Joined: Mar 22, 2018

by BGuttman »

Remember that in 7th position you are riding on the stocking, which has a tighter clearance to the outer slide than any of the rest of the slide.

If you have a dent or out of round condition near the brace end of the outer slide it will tend to catch on the stocking.

Also, sometimes the soldering of the oversleeves or the slide brace can cause a "bump" inside the slide that will tend to catch on the stocking.

A good tech should be able to troubleshoot this issue.
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Basie1955
Posts: 91
Joined: May 15, 2018

by Basie1955 »

I believe I’m riding on the stocking in every position.

But I get your meaning.
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Basie1955
Posts: 91
Joined: May 15, 2018

by Basie1955 »

[quote="harrisonreed"]My thought on it -- I avoid 7th as much as possible. It's there for low C and for the rare occasion that it makes a passage easier. I don't think the trombone sounds particularly great in 7th.

When you do use it, you can angle the horn down which will reduce the stress on the tubes.[/quote]

I like the angle down.

You meant low B in 7th.
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harrisonreed
Posts: 6479
Joined: Aug 17, 2018

by harrisonreed »

[quote="Basie1955"]I like the angle down.

You meant low B in 7th.[/quote]

No, C below the staff. If you have a horn with no valve, you better get real good at playing in 7th lol. I play 7th position notes all the time, but I use the quart valve.
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Basie1955
Posts: 91
Joined: May 15, 2018

by Basie1955 »

[quote="harrisonreed"]<QUOTE author="Basie1955" post_id="233800" time="1707696254" user_id="3292">
I like the angle down.

You meant low B in 7th.[/quote]

No, C below the staff. If you have a horn with no valve, you better get real good at playing in 7th lol. I play 7th position notes all the time, but I use the quart valve.
</QUOTE>

Ha! Gotcha. I’m referring to a straight tenor.

No added plumbing.
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AtomicClock
Posts: 1094
Joined: Oct 19, 2023

by AtomicClock »

I've played around a little with dipping the horn - just a slight downward jerk - to lighten the handslide when getting out of seventh. But mostly, I do what Harrison suggests.

It occurs to me that seventh position should be much easier in free fall. Have any astronauts taken a trombone to the ISS?
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ghmerrill
Posts: 2193
Joined: Apr 02, 2018

by ghmerrill »

I just went through this with my '47 Olds Standard. Everything great except some drag/scratchiness down around 6th/7th. Cleaned it unmercifully several times. No better. Each side individually was smooth. Finally took it to my slide guy. He started by inspecting it and ruminating about physics and gravity. Then did a laying on of hands -- said the upper was just a tiny bit out of line with the lower. $20. Fixed, on the spot. Cased it up and went home. Of course, there can always be several causes for something like this. But if you take it to a good slide person you will likely save a lot of time/effort/heartache for not much money -- and get it fixed. I do a lot of work on my own instruments, but I don't do slide work. :roll:
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Basie1955
Posts: 91
Joined: May 15, 2018

by Basie1955 »

Huge thanks. ( love ruminating ). I will take

it in to a pro. Likely a bit out of alignment.

I need to be nice to my slide and be careful not to twist

or tweak it.
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ghmerrill
Posts: 2193
Joined: Apr 02, 2018

by ghmerrill »

We all do ... but they're so privileged and entitled, and "Oh, I'm so sensitive and fragile." :lol:
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OneTon
Posts: 757
Joined: Nov 02, 2021

by OneTon »

[quote="AtomicClock"]Have any astronauts taken a trombone to the ISS?[/quote]

Alan Shepard took one to the moon. Before he did the slide test, Shepard used it to hit a golf ball. The slide test was deemed to be inclusive. The golf shot looked pretty good.
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ssking2b
Posts: 487
Joined: Sep 29, 2018

by ssking2b »

Urbie Green once said "7th position? Who uses that?"
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Posaunus
Posts: 5018
Joined: Mar 23, 2018

by Posaunus »

[quote="OneTon"]<QUOTE author="AtomicClock" post_id="233806" time="1707698771" user_id="17161">
Have any astronauts taken a trombone to the ISS?[/quote]

Alan Shepard took one to the moon. Before he did the slide test, Shepard used it to hit a golf ball. The slide test was deemed to be inclusive. The golf shot looked pretty good.
</QUOTE>

Fact check: In 1971 (Apollo 14), Alan Shepard hit a few golf balls (with a one-handed swing) using a custom-fashioned "club" - a Wilson 6-iron head attached to a lunar sampling tool. No trombones were harmed in this exercise.

But I bet a lightweight slide would really feel light on the moon's surface!
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baileyman
Posts: 1169
Joined: Mar 24, 2018

by baileyman »

My Model 9 slide had a strong resistance in that area, actually starting at sixth. No amount of cleaning helped. Couldn't find anything amiss myself. John Sandhagan looked at it and thought there might be some out of roundness from solder joint heat. He inserted an adjustable reamer in and took a few thou off the inside of the outer near the brace. I think it's better, but I don't think the result is definitive. If the stickiness started after sixth I wouldn't have been concerned or puzzled.