Bach Trombones – Build Configurations (1957)

Bach Trombones – Build Configurations (1957)

Bach Trombone Build Sheet
Dated: 9/6/1957

Mounting Chart

Gauge #23 (minus .0015″)
Brass thickness .021″ (.55mm)
Bell Diameter 7.500″

Model Bell Slide Bore Mouthpipe Slide Crook Bell Lrg. Tuning Slide Tube Tuning Slide Bow Sml. Tuning Slide Tube Gooseneck
4 7.500″ 0.468/0.485 #412 0.518″ #440 0.721″ #431 0.562″ #411
5 7.500″ 0.485″ #412 0.522″ #435 0.696″ #435 0.541″ #435
6i 7.500″ 0.485″ #412 0.522″ #401 0.721″ #411 0.582″ #411
6ii 0.485″ #412 0.522″ #425 0.721″ #411 0.562″ #411
6iii 0.485″ #412 0.522″ #425 0.670″ #416 0.528″ #416
6iv 0.485″ #412 0.522″ #431 0.721″ #416 0.562″ #411
6v 0.485″ #412 0.522″ #431 0.670″ #416 0.528″ #416
6vi 0.485″ #412 0.522″ #436 0.721″ #431 0.562″ #411
6vii 0.485″ #412 0.522″ #440 0.721″ #431 0.562″ #411
7 0.485/0.495″ #402 0.524″ #449 0.721″ #411 0.562″ #411
8 0.490″ #418 0.527″ #425 0.721″ #411 0.562″ #411
9 0.485/0.500″ #428 0.530″ #425 0.721″ #411 0.562″ #411
10 0.495″ #418 0.532″ #425 0.721″ #411 0.562″ #411
12 0.500″ #423 0.536″ #425 0.721″ #411 0.562″ #411
16 0.495/0.509″ #402 0.540″ #425 0.721″ #411 0.562″ #411

model #4 “Pick a light (thinner) bell like model 6 (stamp model 4)”
model #6ii “same as 8-12-16 bell”

Source: Irvin Karan @ Slidebone (from Sheldon Ginsburg (Philly) from Peppy (John) Pettinato.)

Bach Trombone Build Sheet
Dated: 9/6/1954

Model Slide Bore Mouthpipe Slide Crook Bell Lrg. Tuning Slide Tube Tuning Slide Bow Sml. Tuning Slide Tube Gooseneck
6i 0.485″ #412 0.522″ #401 0.721″ #411 0.582″ #411
6ii 0.485″ #412 0.522″ #425 0.721″ #411 0.562″ #411
6iii 0.485″ #412 0.522″ #425 0.670″ #416 0.528″ #416
6iv 0.485″ #412 0.522″ #431 0.721″ #416 0.562″ #411
6v 0.485″ #412 0.522″ #431 0.670″ #416 0.528″ #416
6vi 0.485″ #412 0.522″ #436 0.721″ #431 0.562″ #411
6vii 0.485″ #412 0.522″ #440 0.721″ #431 0.562″ #411

Some notes to add-
1. Models iii and v have the smallest bell thoats and smallest larger slide tubes, therefor making them the least desirable.
2. All bells listed on this sheet are from 1957 after Bach went to all 7 1/2 inch bells as standard sizes. Earlier M.V. and N.Y. bells could have 7 inch bells, but that would be the only variable from these numbers.

Source: Dr. Jason Oliver, D.M.A., Southeastern Oklahoma State University

1 Comment so far

Jump into a conversation

Your data will be safe!Your e-mail address will not be published. Also other data will not be shared with third person.