Slide/bell connection

E
etbone
Posts: 117
Joined: Feb 13, 2019

by etbone »

See photo. The male fitting, seems extremely short(about 1 inch). Issue with horn, fitting not tight enough, so bell/slide angle.... will loosen up during playing. Female fitting, bottoms out, at thread. Currently, use some plumbers teflon tape, to add some thickness/fiction. Horn in question, Getzen 1052
M
Matt_K
Posts: 4809
Joined: Mar 21, 2018

by Matt_K »

Threads on either side might be worn. Getzen parts are typically not too expensive if you want to replace the tenon or the slide receiver. The tech would have to disassemble and reassemble the slide receiver portion which will cost probably more than you'd expect given that there are so many solder points in that spot.

The tenon looks right, it's shorter than Bach/Edwards length; it's a Conn length tenon.
H
harrisonreed
Posts: 6479
Joined: Aug 17, 2018

by harrisonreed »

Yeah that tenon is correct for Getzen. It's probably due to chronic overtightening of the tenon nut ruining the threads.
B
Burgerbob
Posts: 6327
Joined: Apr 23, 2018

by Burgerbob »

The threads don't matter. They're just insurance, they don't keep the horn together. Over time, the tenon will wear on the receiver (or the other way around) and they won't fit anymore. Easy enough to get a new tenon installed on the slide.
B
brassmedic
Posts: 1447
Joined: Dec 14, 2018

by brassmedic »

[quote="etbone"]See photo. The male fitting, seems extremely short(about 1 inch).[/quote]
Shhh...you'll give him a complex.

2 solutions: Replace the male tenon as mentioned, or have someone with a lathe remove the tenon, cut off one row of threads, and reinstall. Then it won't bottom out anymore.
D
Doug_Elliott
Posts: 4155
Joined: Mar 22, 2018

by Doug_Elliott »

I haven't tried this yet, but I got a copper brush plating kit to see it it's easy to add a tiny bit of metal to the tenon. My horn that's slightly loose like that responds well to simply painting the tenon with ink from a Sharpie.
C
CharlieB
Posts: 434
Joined: Mar 29, 2018

by CharlieB »

Hmmmmm.

This problem seems to come up a lot on this forum.

Etbone, instead of the plumber's tape, you might try this adhesive coated aluminum tape:

<LINK_TEXT text="https://www.lowes.com/pd/Reflectix-2-in ... pe/3012014">https://www.lowes.com/pd/Reflectix-2-in-x-30-ft-Reflective-Insulation-Tape/3012014</LINK_TEXT>

One layer, no overlap, surgically applied to the tenon with a razor blade.

Extremely durable solution. Expect the tape to last for many, many years. (It's real metal).
I
imsevimse
Posts: 1765
Joined: Apr 29, 2018

by imsevimse »

I managed to solve a similar issue using an o-ring

/Tom
T
tbonesullivan
Posts: 1959
Joined: Jul 02, 2019

by tbonesullivan »

[quote="etbone"]See photo. The male fitting, seems extremely short(about 1 inch). Issue with horn, fitting not tight enough, so bell/slide angle.... will loosen up during playing. Female fitting, bottoms out, at thread. Currently, use some plumbers teflon tape, to add some thickness/fiction. Horn in question, Getzen 1052[/quote] Ok, so when you put the horn together, the end of the receiver (on the right) hits the threads on the tenon (on the left)? Or do you mean that when you tighten the lock nut it gets to a point and will not tighten anymore?
B
brassmedic
Posts: 1447
Joined: Dec 14, 2018

by brassmedic »

Tape and the like is a cheap quick fix and won't last. Get it fixed right.
E
etbone
Posts: 117
Joined: Feb 13, 2019

by etbone »

Thanks for all the info. My main question, was about the tenor length. Yes, previous owner over tightened, Receiver nut. Horn plays pretty well, as is, with the emergency fix. Will be having tenor replaced.

Happy holidays.

Etbone
B
Bach5G
Posts: 2874
Joined: Apr 07, 2018

by Bach5G »

Rath has a different connection doesn’t it? Maybe Rath owners can weigh in.
J
JohnL
Posts: 2529
Joined: Mar 23, 2018

by JohnL »

[quote="Bach5G"]Rath has a different connection doesn’t it? Maybe Rath owners can weigh in.[/quote]
Rath uses a clamp system. Unlike some older designs (like on some vintage Olds trombones) where the mating parts are tapered (i.e., the connection is primarily friction fit) and the clamp provides an additional measure of security, on Raths the mating parts are cylindrical or nearly so and the clamp is the primary means of securing the connection.

Me, I look at that and worry about someone overtightening it, but I don't recall seeing any reports of that happening.
C
Crazy4Tbone86
Posts: 1654
Joined: Jan 14, 2020

by Crazy4Tbone86 »

[quote="etbone"]Thanks for all the info. My main question, was about the tenor length. Yes, previous owner over tightened, Receiver nut. Horn plays pretty well, as is, with the emergency fix. Will be having tenor replaced.

Happy holidays.

Etbone[/quote]

The Getzen bass tenons have the Conn taper and they are rather short. Just measured an old Getzen bass tenon that I have in a parts bin. It is just several thousandths over an inch long…..very similar to yours.
E
etbone
Posts: 117
Joined: Feb 13, 2019

by etbone »

Thx, Brian, mine measures, exactly 7/8".