I took a guess at finding the balance point along the length of the aileron and put it there. If you put it on one end, I think you will have some twisting forces to deal with.
http://krbuilder.org/Aileron/index.html If you care to see how I balanced ours. What do you mean by "dynamic tube". If you are referring to static, it can be left open. There was an extensive thread on this subject some time ago, so if you look in the archives under "static", you will find more information than you care to read. See N64KR at http://KRBuilder.org - Then click on the pics See you in Mt. Vernon - 2006 - KR Gathering There is a time for building and a time for FLYING and the time for building is OVER. Daniel R. Heath - Lexington, SC -------Original Message------- 1. Is there a specific location for the aileron counter balance or can it be mounted anywhere along the aileron?(next to aileron push rod) 2. Is it necessary to fit a dynamic tube or could one just leave the dynamic port open behind the instruments?