[pianotech] Steinway Teflon?

[Horace Greeley]

Hi,

Ed is right; the phase out started in the '82/'83 production year 
with D's and B's; by '84 just about everything that had had old style 
teflon was through the line...it's not like they removed parts from 
what was already in the line and/or in supply.  What's a little 
deceptive is that the use of teflon has continued with 
teflon-impregnated felt bushings even while the Renner/Hamburg parts 
were also in use off and on (mostly from '84 through '87).  And, as 
we all know (from endless repetition) the geometries weren't exactly 
interchangeable.

In fairness, though, a great deal of time and resources went into 
working out what combination of machining, felt density, type of 
solution, etc has gone into the impregnated bushings over the 
years.  While the earlier stuff was pretty nasty, and there is still 
room for improvement, the later production has been reasonably stable.

One of the things I'm looking to see is how Ron Losby's integration 
of the various parts, techniques and production processes between NY 
and Hamburg fairs in practice.  I think both ends of the equation 
have something to learn/gain from each other.

Best.

Horace


At 04:37 PM 3/1/2010, you wrote:
>
>
>Hey Guys/Gals,
>When did Steinway cease the Teflon Actions in production?
>Joe
>
>Mostly by 1984.  There were a number of pianos with cloth shanks and 
>teflon whippens sent out during this year or the one before.
>Ed Foote RPT
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100301/0f2dd867/attachment.htm>