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#2038296 - 02/24/13 06:29 AM 1920s Sohmer / WN&G regulation specs?
Robert A. Offline
Full Member

Registered: 07/09/08
Posts: 25
Loc: Southern California
Hi there,

I'm a bit stuck regulating a 1927 Sohmer Cupid with a WN&G action. First of all, from everything I've heard, Sohmer used Pratt-Read actions exclusively, so I'm not sure if the action is some kind of brief experiment on the part of Sohmer or perhaps not original.

A while ago, someone here was saying they were having trouble regulating a Sohmer grand until they realized its hammer blow distance was supposed to be 2". After experimenting with a few different distances, I continue to be stumped, so I ask you. Should I be looking at regulation specs for Sohmer grands or for WN&G actions? If anyone can offer insight on the dilemma I'd much appreciate it.

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#2038302 - 02/24/13 06:59 AM Re: 1920s Sohmer / WN&G regulation specs? [Re: Robert A.]
Ed Foote Offline
1000 Post Club Member

Registered: 05/03/03
Posts: 1569
Loc: Tennessee
Greetings,
Your key height is proscribed by the case, so that can be a beginning. Has to fit under the fallboard and should not look weird over the keyslip.

Key dip can be from .375" to .400". Set the dip on one of the keys to a value somewhere inbetween these two, set the let-off, and then raise the hammer until you have .040" after touch. That will be your blow distance for a middle of the road beginning set-up. You may find the action is made for a deeper touch and longer blow, but you can't get too far away from the key's limitations, since the sharps can't bury, and they don't feel good if higher than 1/2 inch.
good luck

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#2038417 - 02/24/13 12:20 PM Re: 1920s Sohmer / WN&G regulation specs? [Re: Robert A.]
Supply Offline
3000 Post Club Member

Registered: 09/11/06
Posts: 3919
Loc: Vancouver Island, BC, Canada
As Ed alludes, an action will generally tell a person how it wants and needs to be regulated. However, you need to be able to understand the language it is speaking. This requires more in-depth, close-up and personal exposure and regulating experience with many grand actions than reading a book or two and spending a lot of time on the internet. Grand actions are in fact fairly complex beasts, when you get down into the details of the interactive steps of regulation.

I suggest getting a piano technician in to do a first regulation and then you can experiment with it from there.
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Jurgen Goering
Piano Forte Supply
www.pianofortesupply.com

Piattino Caster Cups distributor

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#2038510 - 02/24/13 03:29 PM Re: 1920s Sohmer / WN&G regulation specs? [Re: Supply]
Ed McMorrow, RPT Offline
3000 Post Club Member

Registered: 12/09/12
Posts: 3690
Loc: Seattle, WA USA
I second Jurgens advice.
_________________________
In a seemingly infinite universe-infinite human creativity is-seemingly possible.
According to NASA, 93% of the earth like planets possible in the known universe have yet to be formed.
Contact: Ed@LightHammerpiano.com

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