Major Grotrian problem

[Ajay Mistry]

 --- Richard Brekne <Richard.Brekne@grieg.uib.no>
wrote: > A quick check to see whether you've
mismatched
> hammer weight in the bass 
> is to simply add a bit onto shank out next to the
> hammer. Add say 2 
> grams out there in some temporary fashion.  If your
> hammer and key do 
> more or less what they are supposed to do then you
> have a problem with 
> hammer weighting.  If this turns out to be the case,
> then you really 
> need to get some help. While action balancing is not
> all that difficult 
> conceptually, you should already know how to do this
> before getting into 
> a hammer replacement job... not criticism meant
> here... many of us have 
> been in this boat at some time... but get somebody
> who can help you.
> 
I did send sample hammers ie first & last hammer of
each section to Grotrian piano company in Germany so
that they could be duplicated to the original

> Do you know how to measure hammer weight ? You are
> more or less stuck 
> with radius weight now that the hammers are glued to
> the shanks... which 
> is a good way to take hammer weight anyways... Check
> out David Stanwoods 
> website for some good action balancing basics.
> 
> http://www.stanwoodpiano.com/seesaw.pdf
> 
> Cheers
> RicB
> 
> Ajay Mistry wrote:
> 
> >Hello list am working on an Grotrian action had
> >ordered new complete hammers ie hammer glued to new
> >shank fitted with flange also prevoiced by Grotrian
> >also I changed the key leads which were made by me
> >here in my workshop now I am finding a major
> problem
> >when I fitted the new hammers to the action & play
> the
> >notes bass particularly the key stays depressed &
> >hammer in mid air when I lift the key with my hand
> the
> >hammer falls checked the bushings loose enough none
> of
> >the keys are touching each other I think the leads
> >have become to heavy how do I rectify this have
> heard
> >of up-weight & down-weight how do I calculate that
> can
> >any one explain the procedure to me & how much
> should
> >there be on this piano.
> > 
> >        Really in lot of trouble please help guys.
> >
> >                                            Ajay.
> >
> >=====
> >Ajay Mistry
> >
>
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=====
Ajay Mistry

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