Size of 16M Neckpipe

ngrinder · by **ngrinder** » 2023-09-16 8:52 p.m.

I’m building up a bell section, and looking to have a 16M sized goose neck installed, but my tech isn’t sure of the dimensions.

Does anyone have this info? Thanks in advance!

Kbiggs · by **Kbiggs** » 2023-09-16 8:58 p.m.

Brad Close might know. I believe he still creates neckpipes for this and other horns. I can’t remember his handle on this forum…

Doug_Elliott · by **Doug_Elliott** » 2023-09-16 9:02 p.m.

I have measurements of .509 ID at the bottom to .555 ID at the top. Add about .030 to .032 for the OD.

I suspect that horn was from the '80's, probably after they changed and made it bigger, but I'm not sure.

ngrinder · by **ngrinder** » 2023-09-17 12:35 a.m.

Thanks Doug and Kenneth. I’ve asked around, and am hopeful a few more folks will chime in. I’ll have my 12 measured against those numbers you have, Doug. I bet you’re correct.

ithinknot · by **ithinknot** » 2023-09-17 3:24 a.m.

Doug is right about the IDs, but the wall thicknesses are higher - more like .020", so ID +.040.

Both pipes end up around 19/32 OD, .555 ID. The "open" starts at .509 ID, the original 8/12/16 starts at .490.

OAL varies slightly, but around 8.25.

Posaunus · by **Posaunus** » 2023-09-17 3:26 a.m.

[quote="Kbiggs"]Brad Close might know. I believe he still creates neckpipes for this and other horns. I can’t remember his handle on this forum…[/quote]

brassmedic

ngrinder · by **ngrinder** » 2023-09-17 10:22 a.m.

[quote="ithinknot"]Doug is right about the IDs, but the wall thicknesses are higher - more like .020", so ID +.040.

Both pipes end up around 19/32 OD, .555 ID. The "open" starts at .509 ID, the original 8/12/16 starts at .490.

OAL varies slightly, but around 8.25.[/quote]

Thank you!

pedrombon · by **pedrombon** » 2023-09-17 6:47 p.m.

Regarding the neckpipes... on the 42 straight horns, does anyone know the measurements of the stock ones vs."M" (open) neckpipes?

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Size of 16M Neckpipe