[CAUT] Checking

[Jurgen Goering]

Yes, Thanks Alan for the S&S backcheck info.

One question:  Given an assumed constant tail length and bore length 
(within bass and treble)  I don't quite understand why the backcheck 
height "increases linearly (with respect to note number) from 3 3/8" 
for note # 1 to 3 9/16" for note # 88".

Can someone clarify this?
Also, would these dimensions be the same in all models?

Jurgen Goering
Piano Forte Supply
(250) 754-2440
info at pianofortesupply.com
http://www.pianofortesupply.com
>
> Alan,
> Thanks for the copy of the instructions.
>
> The first time I heard of raising the backchecks was from Scott Jones
> teaching at a regional seminar.  I think he also talked about using a 
> snap
> ring pliers.  Kevin Stock, also with S&S for a time, had a modified 
> snap
> ring pliers with a slot cut out for the wire.  He would just lift 
> them, then
> even them out.  I think that's because he knew what he was doing
> intuitively.  It was Roger Jolly that I first heard put some numbers 
> which I
> need with the idea;.... tail arc radius at 1/2 the hammer hanging 
> distance
> (usually right around 2 1/2), shank intersecting roughly the top 1/3 
> of the
> backcheck (this does not need to be fussed with if the hammer line gets
> raised from filing or whatever), and the backcheck angled back 18 
> degress
> from vertical (pretty similar to the 68 or 70 degrees you work from, 
> just
> different point of reference and 4 deg. different).  I always enjoy 
> hearing
> the different approaches to the same thing, because not all things 
> work the
> same for everyone, (not wrong, just different) and it is also good to 
> get
> something reaffirmed by a seperate source.    A different perspective 
> can
> turn the light bulb on.
>
> Tim G
>>
>> Attached is a S&S document about installing backchecks.
>>
>> Have a great break!
>>
>> Alan
>>
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