Bass end "rattle" on S&S "D" Being prepped for Brickman Concert Tomorrow!

[Andrew Anderson]

Solution by pressing makes one wonder about impedance, does clamping a  
heavy vise grip on to a bridge pin in that region solve the problem?   
If so, you might try adding impedence (drill an appropriate amount of  
brass and screw up to the underside of the bridge).  This involves a  
trade-off, volume- for sustain+.

I'm presuming we're not talking about loose ribs.  You could try  
putting  a little water-thin CA up against the joint (syringe), if it  
wicks in you have a bad glue joint to deal with.

How are the agraffes there?  If they are grooved deeply or loose that  
can add a noise.

Presumably there are no snares, cymbals or bass drums nearby...

Stainless Steel windings on the strings?  Who was the string maker?

Keep us posted,
Andrew Anderson

On Sep 24, 2008, at 7:09 PM, Michael Magness wrote:

> HELP!!!!!
>
> I have only begun caring for the pianos at this school/venue in the  
> last month.
> This piano was last serviced in May by the previous tech who left  
> the area.
>
> It was rebuilt in '03 and appears to have no major problems, the  
> bass strings are steel wound, not certain why.
> The lowest 6 notes have a rattle that I could not eliminate. I  
> tightened every screw I could find, hinges, cabinet, lyre, plate  
> bolts. I checked the bridge pins to see that they were fully seated  
> in the bridge.
> The only way I could eliminate it was to lay under it and press up  
> on 2 ribs above the beam (that extends to the nose) about 2/3 of the  
> way toward the bass bridge, approximately under the tenor bridge.
> I also cleaned under the plate and bridges looking for forign objects.
>
> Now what? The concert is tomorrow night.
>
> I would appreciate any advice,
> Mike
>
> -- 
> I feel sorry for the person who can't get genuinely excited about  
> his work. Not only will he never be satisfied, but he will never  
> achieve anything worthwhile.
> Walter Chrysler
>
>
>
> Michael Magness
> Magness Piano Service
> 608-786-4404
> www.IFixPianos.com
> email mike at ifixpianos.com

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