Mike, Here are the regulating specs you requested. I hope the formatting carries through clearly enough to allow you to see what's what. G-150 thru G-208 G-213, G-275 Dimension pre1991 1991 1992 - (Renner) Keybed to Strings, Bass 206mm 206mm 206mm 206mm Treble 198mm 198mm 197mm 197mm Keybed to Hammer Flange center 148mm 148mm 147mm 147mm Keybed to whippen flange center 84mm 84mm 84mm 84mm Spread 112.5mm 112.5mm 113.5mm 115mm Key Height, from keybed 64.5mm 64.5mm 66mm 66mm Key Height, sharps 12mm 12mm 12mm 12mm Hammer Blow, from string 47mm 45mm 45mm 45mm Let off Bass 3mm 3mm 2.5mm 2.5mm Treble 2mm 2mm 1.5mm 1.5mm Drop Approx. 2mm below letoff. Jack tender should contact letoff button simultaneously with repetition lever contacting drop screw. Key Dip 10.2mm 10.2mm 10.5mm 10.5mm Sharps set for equivalent aftertouch to naturals. Damper Lift Damper should begin to lift when hammer is 20 - 24mm from rest. Backcheck Distance (from strings) Bass: 14mm Treble: 13mm Touch weight, grams (approx) 56 53 53 56 (53 after 1991) Note: Pre-1991 actions have individual rest cushions for each hammer shank. All actions from 1991 forward have an adjustable hammer rest rail. Actions built from 1992 forward can be identified by the vertical angle of the let off buttons. Previous letoff buttons were angled down and away towards the jacks, at 96o to the hammer rail. The letoff buttons in new actions are 90o to the action rail. Send me a private note if you need a draft copy of our service guide. I can E-mail it to you in Word Perfect format or as a TXT file, or snail-mail a printout to you. Don_Mannino@yca.ccmail.compuserve.com ______________________________ Reply Separator _________________________________ Subject: Young-Chang Author: INTERNET:MDS@LNS62.LNS.CORNELL.EDU at CSERVE Date: 7/11/95 9:29 AM Hello.I can't find my piano action book and I have to do some regulation on a Young Chang tonight.Does anyone have the specs. for this It's a 5'10" 10year old grand.Also if you have any suggestion for making the action heavier would be appreciated.I was thinking of using the jiffy leads. Thanks Mike Stevans mds@lns62.lns.cornell.edu
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