Oorebeeks Punch'ns

[V T]

Hello Roger,

Any suggestions as to where I could read about Harold
Conklin's experiment you mention below?  Also, I would
suggest that the tightness of the balance pin hole in
the key will have an effect on what the front rail
punching does.

Vladan

===================
Hi Stephen,
                        I'm glad to hear you are going
to do some more in 
depth scientific testing, with actions using state of
the art 
equipment.  One thing not to over look in your motion
analysis, is to keep 
the centre pinning fairly tight. All bushings should
be accuately reamed 
with a parallel reamer, to ensure equal friction on
both sides of the 
bushing. It will help to reduce some of the erratic
behavior, of the 
components.
  Very accurate boring of the hammer, so there is no
heavy/ light side will 
also be important. Harold Conklin found this out in
his 1970's SloMo 
analysis. The bore angle will make the  tenor/ bass
hammers behave 
differently than the non angled treble bores.

I am sure you have thought of these factors.  But some
food for 
thought.  If you can get your hands on, a set of
Steinway Teflon bushed 
wippens and shanks, you could reduce the felt bushing
anomaly,  and more 
accurately see the timing and flexing motions.

Regards Roger


		
__________________________________ 
Yahoo! Messenger 
Show us what our next emoticon should look like. Join the fun. 
http://www.advision.webevents.yahoo.com/emoticontest