[pianotech] YC Capo Bars

[William Truitt]

Let me add that a few years ago I capped the treble and bass bridges on a
cheap no name with Delignit bridge capping material.  Ugly as sin, hard to
notch, but boy, the unisons were clean.

Will

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Ron Nossaman
Sent: Sunday, September 19, 2010 9:28 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] YC Capo Bars

On 9/19/2010 7:48 PM, Roger Gable wrote:
> Ron & Will,
> Well, I think we're unknowingly talking about two different things -- a
> laminated bridge verses a laminated cap. The lousy pianos I'm referring
> to have laminated bridges -- laminated entirely from top to bottom. Is
> there a top quality piano using laminated bridges? I think not.

Not that I know of. There's nothing at all inherently sub standard about 
horizontally laminated bridges, except the waste cutting them out of 
bigger panels and existing prejudices against them for having appeared 
in lousy pianos, and the mistaken belief that the little sound 
vibrations won't get past the glue layers. I don't know why Kimball did 
it, except they knew it made a good solid bridge and were willing to 
suffer the waste of material for the convenience. It will indeed make a 
good solid bridge. You just have to put a piano under it.


> Help me
> here. I would think that a progressive manufacturer like Yamaha would
> have incorporated laminated bridges if it didn't deflect from the
> quality level they've already established.

If they aren't clearly superior and cheaper, there's no reason for 
Yamaha to use horizontally laminated bridges.


> Also, I thought that the high production manufacturers machined the
> notching rather than hand notch. If machined, then it wouldn't make any
> difference if the cap (or bridge) is laminated or solid.

Not to the manufacturer, no. The fact is, however, that laminated caps 
are more tuning stable and false beat resistant. The manufacturer 
doesn't have to service them and keep them sounding nice. Those who do 
tend to like the laminated caps.
Ron N