[pianotech] Trouble jacks

[Noah Frere]

 I need 3 now. I broke another one trying to get the stack back on, which
was exceedingly difficult. The only way to do it is to remove the wippens
of the notes next to the stack feet, since the feet go under the keys a
little, so those particular keys must be loose to get the stack on. It is
very annoying. Plus I am using Rawson's key-levelers, which i really like,
but they have to be put on the pins of those particular notes after the
stack is put on.

On Sat, Mar 10, 2012 at 2:23 PM, <JWyatt1492 at aol.com> wrote:

> **
> Hello Noah,
>
>     How many do you need in total?
> I have some with the long arm.
>    I don't have any with the short arm..
>
>     Your picture is the long arm I think.
> It is very little  trouble to shorten the
> long one.
>
>    If the wooden nuts that adjust  the jacks
> are bad leather nuts work like a charm.
> Schaff has these on page 171
>
>  Jack Wyatt
> Dallas Chapter
>
>
> n a message dated 3/10/2012 10:50:44 A.M. Central Standard Time,
> noahfrere at gmail.com writes:
>
> I'm regulating a 1916 Kranich and Bach Grand #57581, and there are a
> couple broken jacks. I have the set of Tokiwa wippen samples (unfortunately
> it is missing one of the wippen samples - maybe the very one i need), but
> none of them match this strange wippen. The wip flange lays horizontally
> instead of vertical, which isn't a problem. However the jack tip is larger
> than any of the others. The sample jack that most closely matches the K&B
> jack is TWR as can be seen in image 2287. However, the balancier is far too
> long. Sample TWK is the only one that matches the balancier length, but
> there is a rep spring attached behind the wip flange screw that is lacking
> in the K&B. All the other wippens are too large: that is, the balancier
> butts into the hammer rail. TWU-1 and TWU-3 have the horizontal wip flange
> configuration, but again the balancier is too long.
>
> Photo 2286 shows the K&B wippen, and 2284 shows the configuration of the
> wippen/jack connection, which is old-fashioned and outdated, and not
> available as far as I know.
>
> Regluing the jack is sometimes an option, but not in this case as one jack
> foot is missing, and the other is broken in 2 places including where the
> center pin goes through.
>
> There are 2 possible solutions as far as I can tell:
> 1) obtain the proper jack, or
> 2) cut off the extra wippen tail section of TWK.
>
> Option 2 is risky, since I still don't know if all the other specs would
> match up once I altered it.
>
> Any ideas?
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20120310/f5e9af58/attachment.htm>