Class notes - Overs action design

[Ron Overs]

Greetings to all list folk,

Before I forget Carl, enjoyed your reply concerning my hat in the ring.

Last week before I returned to Sydney, Dale Erwin and David Love were 
discussing my Action Design class notes and their availability on the 
list. Dale suggested that I should post my notes to our website. Well 
folks they're now up! Please feel free to print off the notes for 
your own personal use.

For those of you who can view frame sets, just go to our website at;

http://www.overspianos.com.au  then click on 'technical stuff' in the 
side frame. A sub index will appear in the main window. Click on 'PTG 
Reno 2001 convention lecture' and the notes will load into the main 
window. For those who cannot view frame sets, the class notes window 
can be viewed at;

http://www.overspianos.com.au/rno2001.html

I've revised the class notes, since they were originally prepared in 
rather a hurry.

Some of you may wish to print the diagram of the Overs action off our 
site, to use as a reference while reading the class notes. This 
drawing can be viewed at;

http://www.overspianos.com.au/actn.jpeg

You will notice that the earlier jack in the drawings is different to 
the one you saw at Reno - it has been revised - in the piano and in 
the patent documents.

You can print the drawing, or just drag it to your desktop from the 
browser window (at least you can do this on a Mac) to gain permanent 
access to the drawing without being online. Can IBM uses do this also?

A note on our action in piano No. 003 at Reno.

After Reno we took the piano down to LA to set it up for a couple of 
industry representatives to inspect. While preparing the piano I 
found that the capstans were quite corroded. I did not find this in 
Reno. Since the action was assembled just before the piano was 
shipped to the US, I had assumed that the capstans would not require 
any further polishing. How wrong I was. The piano was packed for 
shipment in Sydney without being fully sealed within the crate. 
During the flight the cold conditions had caused condensation on the 
capstans which allowed the heel cloth to corrode the surface of the 
capstans. They were very rough to the feel. After polishing the 
capstans and guide pins in LA the action improved considerably. I 
didn't take any measurements. When we get the piano set up again in 
Sydney, I will post the DW UW figures to the list.

It was unfortunate that I didn't get onto the corrosion problem at 
Reno, because the action would certainly have been more free. Anyhow, 
we will take appropriate precautions when shipping in future.

Should there be any questions on the class notes, please fire them up 
to the list.

Best regards,

Ron O

-- 
Overs Pianos
Sydney Australia
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Web site: http://www.overspianos.com.au
Email:     mailto:ron@overspianos.com.au
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