Rail Flex

Jon Page jpage@capecod.net
Sun, 13 Sep 1998 12:24:42 -0400


At 08:10 AM 9/13/98 -0700, you wrote:
>>I applied the pressure to the rail as it sat in position,
>Please explain this sentence for me, Jon.

Downwards pressure applied on rail in piano. Getting my fingers between 
the bottom of the block and the rail and pressing downwards.
Hammers move upwards slightly.

>>secured to the key frame on the keybed.
>>Balance rails studs were in contact.
>>When I hit a key on the M (bass section) with a forte blow,
>>I can see other hammers jump slightly across the section...
>>Jon Page
>
>I just did what you say on the M here in my home...no hammers jumped
>slightly at all.

Ok, ff to fff.  The other sections were fine because the brackets are
closer together.

>So with the exception of not understanding your first sentence, hammers
>jumping slightly is an indication the keyframe still isn't bedded
>correctly.
>Keith McGavern

No knocking, even with applying downwards pressure to the balance and back
rails
the movement is noticed in a ff to fff blow.

So with the infrequency of this type of playing, the effect of the flex is
negligable?
Then if flexing is not an important factor, just for the ease of hammer
spacing and
maintaining it is something for consideration.


Jon Page
Harwich Port, Cape Cod, Mass. (jpage@capecod.net)
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