[pianotech] Acrosonic Bass Bridge

[Rob McCall]

Hi Joe,

I'm not sure if you saw the photos, but it's the upper (speaking length side) of the bass bridge, down at the bottom of this 47 year old spinet. Drilling a new hole doesn't seem viable from the amount of movement that is shown. Most of the pins have moved at least 5mm...

Rob
On Aug 29, 2011, at 10:17 , Joe Goss wrote:

> Rob, You do not mention if it is the lower or upper bridge pin that is effected. Just tuned an old bird cage that had all the lower bridge pins split out. Chose to drill above the crack one half inch and repin.
>  
> If the pins are on the upper and you are not seeing a great chasm my choice would be to lower the tension, remove the strings, push the pins back into place and use thin CA with no activator. Applying several times until the void is filled. Let set or use the spray
> Joe Goss BSMusEd MMusEd RPT
> imatunr at srvinet.com
> www.mothergoosetools.com
> ----- Original Message -----
> From: Rob McCall
> To: pianotech at ptg.org
> Sent: Saturday, August 27, 2011 2:40 PM
> Subject: [pianotech] Acrosonic Bass Bridge
> 
> Greetings,
> 
> I tuned a 1964 Baldwin Acrosonic this morning.  They complained that about 3-4 notes made a funny noise.  Further inspection revealed cracks and shearing of the bass bridge. The first 10-12 strings are affected.  Everything below that is not affected... yet. :-)  Since the pitch was 20 cents low, I tuned it where it stood so as to not put even more pressure on this bridge until I can find a fix for it. I'll bring it up to pitch once the fix is in.
> 
> The rest of the piano is in pretty good shape. They don't want to spend too much but they are willing to spend a moderate amount to have it fixed.
> 
> So, I've heard of using epoxy, etc. to fix cracks and such, but this seems to be quite a different beast.  What is the best method to fix this? 
> 
> The rest of the bass bridge below those 12 notes or so seems just fine with tight pins, etc. It also appears to just affect the cap.  Any and all ideas are appreciated...
> 
> Thanks,
> 
> Rob McCall
> 
> McCall Piano Service, LLC
> www.mccallpiano.com
> Murrieta, CA
> 951-698-1875
> 
> 
> 
> <Bass Bridge1.jpeg>
> 
> 
> 
> <Bass Bridge2.jpeg>
> 
> 

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