Re: [Harp-L] ...Why do reeds go out?



You got it, Robert! Once the reed swings past the neutral zone (between Federation Space and the Romulan Empire), it flops stresses.
So, the side once under compression is now under tension stress. It goes back through the slot again and and now its under compression stress again.  There is a theoretical point inside the reed that is under no compression or tension stress whatsoever.
 
David Payne
www.elkriverharmonicas.com


Elk River Harmonicas Forum now available via Iphone app, www.elkriverharmonicas.com/forum


________________________________
 From: Robert Hale <robert@xxxxxxxxxxxxxx>
To: David Payne <dave@xxxxxxxxxxxxxxxxxxxxxx> 
Cc: Harp L Harp L <harp-l@xxxxxxxxxx> 
Sent: Saturday, May 19, 2012 10:15 PM
Subject: Re: [Harp-L] ...Why do reeds go out?
 

On Sat, May 19, 2012 at 3:38 PM, David Payne <dave@xxxxxxxxxxxxxxxxxxxxxx> wrote:

When the reed swings one way, it is under tension force. When it swings the other way, it is under compression force. 

...seems like tension and compression would both be active at the same time on alternate sides of the same reed. 

During both the up and down flaps of the reed, one side is compressing while the other side is under tension. 

As the reed passes the neutral middle, the effects are reversed, and the reed swings to the other side of the plate.

How'm I doin'?  

Robert Hale
See you at SPAH2012
Spiral Advocate
Learn Harmonica by Webcam
Low Rates, High Success
http://www.youtube.com/DUKEofWAIL
http://www.dukeofwail.com


This archive was generated by a fusion of Pipermail 0.09 (Mailman edition) and MHonArc 2.6.8.