Franco Negri & netters It is very common for any aircraft to become more sensitive in all control axis when the CG moves rearward towards the aft limit. This is because the CG is approaching the Center of Pressure (or lift as some know it) and so instead of the plane acting like you are balancing a see saw with one foot stretched out on each side of the hinge, it is like bringing your feet close together and still trying to balance the see saw. It can be done but takes alot more concentration, and smaller deviations result in bigger movements of the see saw. Same applies to the aircraft. It is akin to trying to balance on one foot. Larry's longer tail boom makes his less sensitive because he pry bar or leverage is better, and he is more stable with the greater keel effect of the aircraft. Larry's also has a higher wing loading due to shorter wings, which will have a tendency to make his less sensitive as well. Diehl wing skins should make it even more so as they have the additional wing panel outboard of the plans tip.
Colin & Bev Rainey KR2(td) N96TA Sanford, FL crain...@cfl.rr.com http://kr-builder.org/Colin/index.html