rep springs

[Jon Page]

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At 10:50 AM 6/6/2002 -0400, you wrote:
>I have been taught (and it says so in the regulation manuals), that the 
>rep springs should be adjusted so that there is a "gentle rise," when you 
>let up on the key. This winter I regulated all of the main pianos in the 
>school, including the piano faculty pianos, with the rep spring set to 
>give me that "gentle rise." Now, all of a sudden, piano players are 
>complaining about poor repetition, and when I check out the pianos, there 
>is almost no rise at all.
>
>Once upon a time I heard that the springs will change with the change in 
>weather. But what is happening? How come all of my rep springs are flat? 
>Inquiring minds want to know.
>
>Wim

Humidity.  Unless you are going to adjust the repetition springs seasonally 
you have to leave them lifting faster in the winter
so that with the advance of the summer humidity the added friction at the 
shank and rep lever will allow for the proper lift.

Adjust them in the summer and notice next winter the rate of lift and 
maintain that for most pianos.
Performance pianos require constant adjustment of the top action with 
seasonal changes.  If you set
the letoff  close in winter, they'll be blocking in summer.  the TLRG from 
Pianotek is perfect for these
seasonal touch-ups.

Regards,

Jon Page,   piano technician
Harwich Port, Cape Cod, Mass.
mailto:jonpage@attbi.com
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