[CAUT] WNG F/R pin shims

[David Love]

I wouldn't probably change a set of capstans for purposes of reducing
friction.  There just isn't that much there to begin with an it won't give
you that much improvement for the cost (if that's your only reason for doing
it).  They are lighter and they don't need polishing so if you have to
change a set anyway there's arguably a reason to use them.  But not for the
express purpose of reducing friction.  

David Love
www.davidlovepianos.com

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of David
Ilvedson
Sent: Sunday, February 07, 2010 10:44 AM
To: caut at ptg.org
Subject: Re: [CAUT] WNG F/R pin shims

So how have the WN&G fronts pins worked out?   Less wear on the bushing
cloth...that you can tell?   I'm interesting in trying the capstans for the
friction help...

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "Fred Sturm" <fssturm at unm.edu>
To: caut at ptg.org
Received: 2/7/2010 8:33:27 AM
Subject: Re: [CAUT] WNG F/R pin shims


>Hi Jon,
>	Yes, there is certainly the potential to introduce some misalignment

>in the process of enlarging the original hole, and then drilling out  
>the nylon (or whatever it is) insert. Extra care is indicated. I  
>didn't find the changes too bad in the set I did last summer - I'm not  
>sure it was any worse than the original. It is never quite perfect,  
>hence the standard bending of pins a wee bit for spacing. Which is  
>fine as long as it is truly a "wee" bit.
>	WNG's problem is that there are any number of sizes of shank on
front  
>pins in existing pianos. It isn't cost effective to make pins all  
>those sizes. I guess one could come up with a gradation of shim  
>thicknesses, but that is probably easier to say than do ($$$).
>	I think I remember correctly that I decided the drill size they  
>recommended for drilling out the shim was considerably too small. I  
>went up at least a few wire gauge sizes to get a size that would allow  
>a tight press fit without making it nearly impossible to get the  
>darned pin in.
>Regards,
>Fred Sturm
>University of New Mexico
>fssturm at unm.edu

>On Feb 7, 2010, at 8:59 AM, Jon Page wrote:

>> I ordered a set of f/r pins for a high use grand. They sent these  
>> rather
>> large plastic tubes to retrofit the new pins. It seems to me that  
>> having
>> to ream the frame hole .040" and then ream the tube hole .020" would
>> leave some room for slight misalignment.
>>
>> I'm surprised that shim is the best they can do as a supplier. It  
>> seems
>> to me that something a simple .012" plastic sheeting would be an
>> adequate shim material, or even paper (since the glue would solidify  
>> it).
>>
>> I searched the archives but nothing came up but this topic was  
>> discussed
>> a while ago.
>> -- 
>>
>> Regards,
>>
>> Jon Page