Pinning on new flanges

[Richard Brekne]

Hi Dave

I am not a fan of graphite in centers.  That said... appropriate 
centerpin material (german silver works well) and decent climatic 
conditions generally result in centers that perform to specification.  
When repining as I so often do,  I ream out a little bit in attempt to 
minimize graphite content, and work as much teflon powder into the 
bushing as I can.  So far... 6-7 years now... I have yet to run into any 
negative consequences because of this.  As far as I can see... which 
admitedly is not all that far.. :)... I have a hard time understanding 
why Renner does not opt to move from graphite to teflon powder.  No 
matter what you can or cant say about graphit... it seems clear that 
teflon powder out-performs it.

Cheers
RicB

Piannaman@aol.com wrote:

>> you should for stick to it unless you can confirm it creats indefensable
>> problems. Hamburg Steinway on the other hand,,,, entirely disagrees with
>> New York on this matter and stays with Renner shanks with graphited
>> bushings and the shank tap test... that ends up being around 5-7 swings
>> in the middle section.. a bit more in the bass and a bit less in the
>> treble.
>
> Still... if New York Steinway wants their instruments that way.. then
>
>
> Ric,
>
> This is interesting.  The only graphite I've seen in centers has been 
> on seized or close-to-seized up flanges.  Seems like the swings would 
> drop to 0-1 after a not-so-long while.  Do you repin these?  Just 
> curious...  
>
> Dave Stahl