Rail Flex

[Roger Jolly]

Hi Jon,
          No this assumption is incorrect, flexing of the stack and key
frame will make you reach the action saturation point much faster. Your
test would only hold true if the action was mounted on a rigid surface due
to the following, 1. Maple, Oak or pine key frame a big difference in
flexibility.
2. the number and alignment of glide bolts on the balace rail. I am sure
you have see and heard the results on Yamaha's that have one of the most
flexual frames in the industry. The bigger the piano  the more noticable
the changes due to the increase in depth of action.
  The test would be relavent if you screwed the stack to a firm bench,
pressed on the rail and measure the increase in height of the hammer.
  But you observations are the same as my own, except sustitute Baldwin for
M & H. Baldwin uses 100% maple rails on action and frame.
Regards Roger




>
>One is to presume then, that flexing is a desireable feature to have in the 
>system.
>
>Still wondering,
>
>
>Jon Page
>Harwich Port, Cape Cod, Mass. (jpage@capecod.net)
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
Roger Jolly
Baldwin Yamaha Piano Centre
Saskatoon and Regina
Saskatchewan, Canada.
306-665-0213
Fax 652-0505