Teflon Back Actions

[Wolfley, Eric (WOLFLEEL)]

I just did this work on a 1972 S&S D and found it to be quite easy and well
worth it. The Teflon back actions have the short levers which hang down at a
kind of steep angle and are out of compliance with the straight-line rule
governing underlever friction on the key-end felt. If your D has had a lot
of playing you will see the results of this unwanted friction as dished out
areas on the key-end felt. I won't go into all the problems this can cause,
but I have seen them dished out as much as 1/4" on practice room pianos
here. I bought a complete back-action from Steinway ($900. I think) and
installed it in 5 minutes using just a couple of balance rail punchings as
shims on one side to adjust the left to right orientation. Everything else
lines right up. The new back actions are the same ones installed in new
pianos and have no springs in the bass section. Steinway says pianists seem
to prefer the way these feel. I strongly urge you to replace it at this
time. 
Eric

~~~~~~~~~~~~~~~~~~~
Eric Wolfley
Head Piano Technician
Cincinnati College-Conservatory of Music
University of Cincinnati
~~~~~~~~~~~~~~~~~~~

 -----Original Message-----
From: 	Avery Todd [mailto:atodd@UH.EDU] 
Sent:	Tuesday, October 15, 2002 11:53 AM
To:	College and University Technicians
Subject:	Re: Teflon Back Actions

List,

Has anyone ordered a back action from Steinway to replace one of these
lately? I was just wondering how they work in comparison to the kit.

Avery

>Absolutely.  You will want to correct the geometry problem innate in those
>by replacing it with Renner's kit.
>
>>Dear List-
>>Next month I'll be examining a 1970's D to write a proposal for major
belly
>>work.  It still has the original teflon bushed back action.  Are there any
>>inate design or performance problems I should be alert for in the back
>>action?  This would be the right time to replace it if justified.
>>Thank you.
>>Ed Sutton
>
>--
>Vince Mrykalo RPT MPT
>Senior Piano Technician
>Crane School of Music
>_______________________________________________
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