damper lever ht.

[Fred Sturm]

Conrad,
	I'm wondering if maybe, in addition to other problems, there might be too 
much friction in some of the upper flange centers. With the teflon 
underlevers, it seems to me the centers are usually either too loose (and 
creating knocking noises and clicks) or too tight. Repin to get rid of 
clicks, using the Steinway reamers, and they'll be far too tight (at least 
with my reamers). One precision sized reamer definitely doesn't "fit all" 
(what's good for a hammerflange isn't gppd fpr a jack or a damper). I've 
had some success with the half sizes from  Pianotek in this application. 
Gets to that completely loose condition you want without being noisy.
	Some of what you describe can sometimes be attributed to tightness here - 
the wire tends to bear on front or back of the bushing, and lift and drop 
are not vertical, which often causes less than complete damping.
Regards,
Fred Sturm
University of New Mexico

--On Friday, September 12, 2003 5:27 AM -0500 Conrad Hoffsommer 
<hoffsoco@martin.luther.edu> wrote:

>snip<
>
> The main problem is, IMMHO, that the arc of the underlever end/damper
> block is so far off from being tangent to the damper wire that the
> dampers start lifting from the back with little added weight noticable to
> the foot.  Add to that, the fact that just moving the tray moves the
> underlever flange in an arc which moves the damper wire before you get in
> contact with the bottom of the levers.   You don't really feel the
> dampers lift until the front starts up.  I did a quick and dirty job so
> there still _is_ some unevenness to the lift, so undoubtedly there is
> some problem from that, [and I will get back into the studio next week to
> do fine regs] but you still don't feel the lift until the bulk of the
> _front_ lifts.
>
> Conrad Hoffsommer - Music Technician
> Luther College, 700 College Dr., Decorah, Iowa 52101-1045
> Vox-(563)-387-1204 // Fax (563)-387-1076
>
> - Education is what you get from reading the small print. Experience is
> what you get from not reading it.
>
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