Key Leads and Inertia

[Ron Nossaman]

> > ...or can we focus on increasing efficiency. If energy loss due to key
> > bend is significant, increasing key stiffness  could result in faster
> > hammer velocity, the pianist might not  need to strike the key as hard
> > as before to get the same velocity.
>
>This is one of the simplest ways. Sometimes the only way. The example given
>in the Journal articles was of a piano having keys so flexible they were
>seriously limiting the range and power of the instrument.

Del,
You knew this was coming, so I won't make you wait any longer. Do you have 
any rough rule of thumb go - no go diagnostic criteria for deciding when 
keys are too flexible during teardown?

Ron N