Paul, I do believe that M&H have a spread spec more than 4.406 (4 13/32). If you set it at 112.5mm as Jon suggests, that converts to 4.429" which is closer to what Masons need. But really you can figure this out by regulating a couple notes and see how far the jack moves. If at full dip (use 10mm as a ballpark) you get good clearance at the back of the jack with the knuckle, and good clearance at the front of the jack with the window felt, then your spread spec will work. Alan ________________________________ From: Paul T Williams <pwilliams4 at unlnotes.unl.edu> Reply-To: CAUTlist <caut at ptg.org> Date: Sat, 11 Jul 2009 12:33:53 -0700 To: CAUTlist <caut at ptg.org> Subject: Re: [CAUT] Action spread That's exactly how I line up the knukle jack relationship. back of the knuckle core with the jack. Too far forward and you get the "cheating" jacks. Too far back, and the touch gets a little heavier and aftertouch is compromised. I really don't want to move the stack. Or move the capstans unless absolutely needed. But, the DW is well over 55g in the mid-section on up, 60+g in the bass, and nothing really gets any better. The back action is also really heavy "to the touch" but can't justify spending more on this thing since it's just a practice piano, yet I want the instrument to be pleasant for the student. How much can one move an action one way or another, back or forward to get a better geometry. The "line" of the relationship to the wippen-flange, capstan and balance rail on my particular M&H is actually quite good. Perhaps I put too heavy of hammers on it! ? I'm not sure yet until diving in further...This piano has the tilted capstan issue from the '20's, so perhaps that part of the problem on this A. Would "modernizing" the capstans to upright be a good thought? I'm just starting the re-stinging part, so can't do too much with the action as it sits. Man...I'm not a fan of restringing a M&H....one single string...then one double...then one single string, then one double. It's a lot of time!!! I'd rather have the single strings all the way! :>) (or double..."normal" way with just a couple of singles) Hitch-pin loop knots on 20g wire is nasty!! I'll think twice before I take on the one piano next door!! :>) I really didn't wish a huge project, but now fear the worst. Thanks for all the input. Paul PAULREVENKOJONES at aol.com Sent by: caut-bounces at ptg.org 07/10/2009 11:03 PM Please respond to caut at ptg.org To caut at ptg.org cc Subject Re: [CAUT] Action spread Hmm, I'll take a look at that. In my mind's eye, it sounds the same as what I was suggesting, but might be more precise. Thanks. Paul In a message dated 7/10/2009 6:36:56 P.M. Central Daylight Time, jonpage at comcast.net writes: I know what you are trying to say, but is this unclear? Generally, don't we want the back of the jack to line up with the back of the spline of the knuckle? But optimally you want the core of the knuckle to line up with the jack center at rest. Knuckle core to align with the jack center pin. -- Regards, Jon Page ________________________________ A Good Credit Score is 700 or Above. See yours in just 2 easy steps! <http://pr.atwola.com/promoclk/100126575x1221323031x1201367232/aol?redir=http://www.freecreditreport.com/pm/default.aspx?sc=668072%26hmpgID=62%26bcd=JulystepsfooterNO62> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/caut.php/attachments/20090713/d21f377f/attachment.htm>
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