New keyboard design (was Re: Key Leads and Inertia)

[gordon stelter]

If I am not mistaken, the primary "goof" in the Teflon
bushing scheme was that, in conjunction with
primordial wooden keys that shrink and swell, they
develop clicks. 
     So, then, is that Mr.Teflon's fault?
     Thump

--- "Elwood Doss, Jr." <edoss@utm.edu> wrote:
> Hey Bob,
> Steinway had an idea such as this in the '70's--they
> are called teflon bushings!  Sometimes the old way
> is the best way.  But I appreciate you thinking
> outside of the box.  We had roof damage, 3 of our 4
> white columns blew down, and the fourth was knocked
> off it's pedestal, and 4 trees were blown down.
> 
> However, all is well with the Dosses!
> Joy!
> Elwood
> ----- Original Message ----- 
> From: "Bob Hull" <hullfam5@yahoo.com>
> To: "Pianotech" <pianotech@ptg.org>
> Sent: Saturday, May 03, 2003 10:42 PM
> Subject: Re: New keyboard design (was Re: Key Leads
> and Inertia)
> 
> 
> > Thinking about wooden piano parts such as keys and
> their inconsistencies as well as balance rails which
> together create a situation in which we have to
> compensate by shimming with punchings in order to
> create the same key height for each key...  Couldn't
> a composite material be made that was machined or
> molded within strict tolerances so as to eliminate
> the need for leveling keys with punchings?   What
> about the type of graphite composites that are used
> in tennis rackets?  If this material was not
> affected by humidity and was very resisitant to
> wear, then used for the balance rail and the keys
> would that eliminate our key leveling requirements? 
> Are any paper punchings required on electronic
> keyboards to level their keys?   However, the key
> must not feel cheap like an electronic keyboard.  
> Other parts are being successfully made from
> alternative materials.   We have to shim these
> instruments that may cost up to $80,000 or so with
> little pieces of paper?  How high tech can!
>  w!
> > e get?  Bob Hull
> > 
> > Phillip Ford <fordpiano@earthlink.net> wrote:> At
> 05:51 PM 5/1/03 , you wrote:
> > >Frankly, I think that some extrudeed, lightweight
> > >aluminum key, basically a shell buttressed with
> > >reinforcement along stress lines to stiffen it,
> would
> > >be FAR better than the 16th Century technology we
> are
> > >dealing with! And it should be hinged on a
> lateral
> > >pin ( at the bottom, on a pivotable plate ) to
> > >eliminate all "wobble". And weights ( not
> poisonous
> > >leads, either! ) could be affixed to the inside
> with
> > >bolts and lock washers along an adjustable track
> for
> > >exact balance.
> > > Thump
> > 
> > These all sound like excellent ideas. While you're
> at it could you incorporate something into your
> design so that I can level the keys without putting
> paper punchings under the keys (talk about your 16th
> century technology)?
> > 
> > Phil F
> > 
> > _______________________________________________
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> > 
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