Here is the link to Old Tony's articles.... http://members.eaa.org/home/homebuilders/authors/bingelis/
... and the one about flutter. http://members.eaa.org/home/homebuilders/authors/bingelis/How%20to%20Mass%20 Balance%20Control%20Surfaces.html#TopOfPage Serge Vidal KR2 ZS-WEC - Taildragger, VW powered (2.4 liter, dual electronic ignition) - Total aircraft time: 390h - Aircraft hangared at: Orleans, France - Pilot moaning in: Tunis, Tunisia E-mail: serge.vi...@ate-international.com <mailto:serge.vi...@ate-international.com> I wish I could find the URL to the original articles by Mr. Bingelis who (in my opinion) does know what he is talking about. In the interim, this extract from one of two articles (by Tony) that I have on the topic. I do not remember any copyright restrictions - I tend to look for and respect such warnings. please see other KRnet info at http://www.krnet.org/info.html