An odd situation

[Richard Brekne]

antares wrote:

> ....
> First check the distance(*s*) between the center pin of the hammer 
> flange and the wippen flange. This distance should be 112,5 mm. For 
> reverence, look at page 147 in your Yamaha "Basic Piano Technology" book.

Will do... but I cant see off hand how this affects the height of the 
hammer rest cushion.

> As was taught to you, make doubly sure that your key height is 64 mm 
> and that the frameNippon friends are about a key dip of *10 mm sharp*, 
> remember?)
> Make a let off in the bass of 2 mm and in the whole treble of 1,5 mm 
> (and be very exact about this, making an exact let off is /not easy/ 
> at your age hehehehehe).
> This let off is not even a concert let off, so be double sure that 2 
> mm is 2 mm and 1,5 mm is 1,5 mm.

I can do that.. but I set them to 3 mm in the bass, 2.5 graduating to 
1.5 from tenor to diskant..  because they were verrrrry insistant about 
that at the acadamy.  Personally, I've always prefered more along the 2 
mm in the bass and 1.5 the rest of the way... but I thought I would do a 
<<acadamy>> job this time... but ok.. I can tighten in there... no 
prob.  Should win me a bit anyways.

> This configuration should give you a healthy striking distance of 
> around 47 mm. Again, in your Yamaha "Basic Piano Technology" book it 
> says : 48 mm + 0 mm or - 2 mm, so 47 mm is a temporary 'so so distance'.


Book says 46 - 48 several places... page 156 for example... which is the 
same essentially as 48mm + 0mm or - 2 mm... but your way seems to accent 
the 48 mark... which fits with Dales experience.  They didnt like 48 at 
the acadamy... 47 you could get away with... but 48... nope.  Even tho 
they used a wider letoff gape.  They liked a good deal of Hataraki... :)

> After having done all that, first finish the 'basic' regulation. You 
> perfectly know how to do that.
> When you're done with this, make your after touch and re-do your 
> striking distance the way I showed this in your /_lovely_/ town.
> It might very well be possible that this C6 is one of those 
> 'monsters', by which I mean to say that you have a 'lucky action'. If 
> that is the case, you may have a perfect 10 mm key dip and a huge 
> striking distance, meaning that this C6 is capable of becoming a kind 
> of 'concert animal' in regard to tonal / dynamical output.

It does have a big sound.

> oh, and indeed, if the hammer cushions are too high, take your voicing 
> tool, stick da needles 2 mm inside the cushion 2 from the top, and 
> with a pliers rip off the 2 mm cushion felt. That will give you ample 
> space for your hammer blow.


Grin... ANDRÈ !!... how untypical of you.... yous a specs man !... but I 
like it !.. Still.. I will check both 3 and 4 times before I rip off da 
felt. 

> Have fun............
>
You know me :)

> André Oorebeek
>

Cheers
RicB