[CAUT] (no subject)

[Draine]

Jim,
Yes the felt looks like it could be one of the culprits. Do any of our  
über-remanufacturers have recommended suppliers / specifications for  
the best understring felt (aside from "buy the stuff that works best")?
Patrick Draine

On May 21, 2009, at 2:44 PM, Jim Busby wrote:

>
> Hi Alan,
>
> I think you're right. I also think that my felt was too thick and  
> presses too much, furthering the problem. See the attached picture.
>
> I'd like to see a picture of the brass. Please!!
>
> Regards,
> Jim
>
>
>
> -----Original Message-----
> From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf  
> Of Mccoy, Alan
> Sent: Wednesday, May 20, 2009 10:44 AM
> To: CAUTlist
> Subject: Re: [CAUT] M&H "A" stability
>
> Hi Jim,
>
> If it is anything like the BB I rebuilt a couple years ago, it is  
> the extreme counterbearing angles. This BB is from the 70s, you know  
> the ones where the angle is over 30 degrees?!! I ground the plate as  
> much as I could to lower the angle, and in the capo sections to  
> reduce the duplex length.
> The piano has always been a bear to tune. Now it is less of a bear,  
> but there is one section still that is exhibiting the symptoms you  
> describe. The upper two capo sections are fine, as are the agraffe  
> sections, but that first capo section, where most pianos have  
> agraffes, is the problem now. I ground that section down as much as  
> I dared (the plate was pretty thick
> there) but the angle is still more than I'd like. I put in a brass  
> half-round bearing there to take the load instead of felt, and that  
> helps too. Just needs more help. I go over that section several  
> times each tuning.
> I'm hoping one of these days it'll settle down.
>
> I have some before and after pictures at home. If you are  
> interested, I'll send you some.
>
> Alan
>
>
> <Mason A1.JPG>