About Checking

[antares]

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On 10-nov-04, at 21:16, Farrell wrote:

> "....exactly 72=BA"
> =A0
> As measured from exactly where to exactly where? The keystick top? The=20=

> keybed? The contact face of the backcheck?
> =A0
> Terry Farrell



Terry,

Aren't back checks always angled towards the back?
Yes of course they are, and the angle should be exactly 72=BA, measured=20=

from the surface of the key.
So, if we angle the back check 'correctly', and if we take care that=20
the lower end of the hammer tail checks half way the back check=20
underfelt, and if we check that the wippen rep spring works well but=20
not too well, and if (when necessary) we roughen up the tails a bit=20
with a roughen up file, it is then as good as certain that the hammer=20
checks in a healthy way in the back check.

And you know what?
This always works.

Andr=E9 Oorebeek



> ----- Original Message -----
>  From: antares
> To: pmc033@earthlink.net ; Pianotech
> Sent: Wednesday, November 10, 2004 1:06 PM
> Subject: Re: About Checking
>
> Hello William R. Monroe,
> According to me, it is as Paul outlines : the angle.
>
> Basically, you need an angle of exactly 72=BA.
> So first get yourself a small piece of carton and cut it into an angle=20=

> of 72=BA.
> Put this carton in back of the back checks and check the angle.
>
friendly greetings
from
Andr=E9 Oorebeek

"where Music is, no harm can be"

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