action centers

[Phillip Ford]

I do exercise the centers before taking a measurement.

Also, according to the Renner drawing that you provided some time ago, if 
I'm interpreting the drawing correctly, the 2-3 g is at a Messpunkt 
(measuring point) from the center of 23 mm.  This is near the end of the 
flange.  I measure next to the screw hole because that is a better defined 
point that is more repeatable for me, so my measurement should be higher.

The point was that the numbers are not consistent from part to part.  On 
this latest set, the measured values for this particular center over 88 
wippens ranged from almost 0 (zero) to 10 grams.  I consider this an 
unacceptably wide range for fine work.  And this is not an isolated 
case.  The last several sets of wippens and shanks and flanges that I have 
used have had this kind of variation.

Phil Ford

At 03:27 PM 1/14/2004, you wrote:
>Hello,
>
>Renner spec. for the flange pin is more 2-3 g, that is may be why you
>find these values. when they are exercised the action center will free
>a tad, so it may be a good idea to move them back an forth a few time
>before really using the gram jauge.
>
>Best regards.
>
>Isaac OLEG