Bechstein grand

[bruce greig]

Hi Ajay:

If what you have is a rocker capstan with two screws to be adjusted, what is
needed is an offset slotted screwdriver.  Schaff has two types of these
shown on pages 69 and 70.  I have both and greatly prefer the No. 50-2 on
page 69.

It takes a lot of patience to perfect this adjustment, backing off one screw
and removing lost motion by snugging up the other and then repeating until
you get the height you want.  If I recall correctly, to raise hammer height
you back off the innermost screw and snug up the one closet to the keys.
And vice versa to lower.  A word of caution, don't overtighten as these
screws have a nasty habit of splitting at the slot.

I also have encountered one (on an Ibach) which has a metal turnbuckle
coupled to the key. This one required a very thin capstan tool - I actually
used a skewer which the owner had available, as none of my other tools would
fit.

Best of luck
Bruce Greig


----- Original Message -----
From: "Ajay Mistry" <ajaymistryin@yahoo.co.in>
To: <pianotech@ptg.org>
Sent: Monday, June 09, 2003 12:55 PM
Subject: Bechstein grand


> Hi I have got a Bechstein grand for repairs whose
> whippens are linked with wooden links to the keys
> instead of capstans can any one help me as to how to
> adjust the hammer blow for this action is there a
> special screw driver for this purpose
>           Please do help
>                           Thanks
>                                        Ajay Mistry.
>
> =====
> Ajay Mistry
>
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