Vertical Touchweight

[Richard Brekne]

First a quick question... just so we are sure we are on the same track ok Terry
?... Your UW and DW figures.... are they with the dampers pulled out of the
picture (damper pedal engaged) or do they include the "weight" of the dampers ?

RicB

Farrell wrote:

> I have a client with a 1963 Baldwin Hamilton 45" studio. She complains of
> heavy touch. DW is in the 60 to 70 gram range. There appears to be very
> little written on vertical piano touchweight. Is there anything in the 1979
> or newer Journals? I have the CDs, but I can't do a search.
>
> Not having done much touchweight on a vertical, I was hoping for some input
> from ya'll.
>
> I figure first do DW & UW and look at friction (I think on this piano, this
> will not be the problem): key bushing, flanges, capstan/wippen.
>
> Assuming friction is not the problem, what would be next on a vertical? Key
> leading? Hammer butt spring tension? How does one evaluate an optimal hammer
> butt tension? Damper spring tension?
>
> Seems to me, make sure friction is where it should be. Then make sure spring
> tensions are appropriate. Then after that start looking a key leading.
>
> This piano is all original and in very, very good condition. Original owner.
> Tuned every year. Is it safe to assume that the hammer weight and action
> geometry are good enough to produce a 50 to 55 gram touchweight? I know
> manufacturers are capable of some real Lu-Lu's, but on a piano design of
> which there were 9,654,826,234 built?
>
> Terry Farrell

--
Richard Brekne
RPT, N.P.T.F.
Bergen, Norway
mailto:rbrekne@broadpark.no