New York Grand Specifications
Key Height: 2 21/32″
Blow: 1 3/4″ S, M, L, O, A, B / 1 7/8″ C, D
Let-off: 1/16″
Drop: 1/16″
Dip: Per NY Spec = 0.4″ +/- 0.01″, author’s note: 13/32″ is most commonly used.
Checking: 1/2″-5/8″
Down Weight Bass: 50g S, M, L, O, A, B / 51g C,D
Down Weight Tenor: 49g S, M, L, O, A, B / 50-49g C,D
Down Weight Mid: 48g S, M, L, O, A, B / 48g C,D
Down Weight Treble: 48g S, M, L, O, A, B / 47g C,D
Down Weight High: 47g S, M, L, O, A, B / 46g C,D
Up Weight: 20+
Aftertouch: 0.04-0.055″
New York Upright Specifications:
Key Height: 2 3/8″ P (1098 & 4510) or 2 7/16″ K
Blow: 1 3/4″
Let-off: 1/16″
Dip: Per NY Spec = 0.4″ +/- 0.01″, however 13/32 is most commonly used.
Checking: 1/2″
Down Weight: 50g +/- 3g
Up Weight: 20+
Aftertouch: .04-.055″
Hamburg Grand Specifications
Key Height: 63mm S, M, L, O, A, B / 65mm C, D
Blow: 47mm
Let-off: 1.5mm bass, 1mm mid & treble
Drop: 2mm
Dip: 9.9-10.6mm
Checking: 15mm
Down Weight Bass: 47g S, M, L, O, A, B / 52g C, D
Down Weight Tenor: 47g S, M, L, O, A, B / 50-49g C, D
Down Weight Mid: 47g S, M, L, O, A, B / 48g C, D
Down Weight Treble: 47g S, M, L, O, A, B, C, D
Down Weight High: 47g S, M, L, O, A, B, C, D
Up Weight: 20+
Aftertouch: 0.8-1.2mm
Hamburg Upright Specifications:
Key Height: 62.5mm
Blow: 45mm
Let-off: 2mm
Dip: 10mm
Checking: 10mm
Down Weight: 47g (50g +/- 3g in the high treble)
Up Weight: 20+
Aftertouch: 0.78-1.17mm
Notes
Unless otherwise noted, the specifications herein are the same as those in “Steinway & Sons Worldwide Technical Reference Guide: Specifications and Service Techniques”, an industry publication that can be purchased by authorized technicians from Steinway. Steinway’s reference guide contains basic procedural information and aspiring technicians are encouraged to purchase it.