Half punchings on balance rail

[V T]

Hello Bob,

That makes perfect sense - by changing the fulcrum
point, you are changing the overall action ratio.  The
number of interest is the Balance Weight (DW+UW)/2,
and that has to drop when the action ratio drops.  In
other words, it will take less force to push the key
down when the ratio is smaller.  Note that the
friction, which is (DW-UW)/2, stays approximately
constant (very slight change).

Best regards,

Vladan

================================

Hi Jack! - couldn't resist, apologies.

The problem I've encountered thus far with the half
punchings is that this not only lowers downweight but
also lowers upweight significantly.  Has this been
your experience?

Bob
--- JWyatt1492@aol.com wrote:

> Hello Bob!
> 
>    I have used this  "center rail felt clipping"
> for years.   I have found that it makes an
> average change of  two to two and a half
> gram difference in the downweight. 
> That is to the lighter side.
>    
>    I do not cut  the hole out I just nip close 
> to it. You can also use this method to 
> even the downweight on a set of keys. 
>    
>     I do not over analyze anything  that is 
> a  fact,  I just except it.
> 
> Regards,
> Jack Wyatt 



		
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