Hello Brad and welcome, I have a KR-2S and extended my forward area by adding one inch to each bay forward of the main spar. This also gave me more leg room and I have had many KR pilots comment on how nice the extra room is as I am not cramped at all. I also have the heavy Corvair engine out there. With my wing tanks (no header tank), my CG came out perfect and I did not have to adjust anything. Adding a passenger moves my CG aft 1.9 inches which is still only 3.9 inches aft of the forward most CG range. That still gives me plenty of safe CG range. Flying solo and full tanks, I am 2 inches aft of the forward CG limit. My plane flies very stable and will fly hands off when trimmed out. As far as the nose gear, with the plane empty and no fuel on board, mine has 214 lbs on the nose gear. With full tanks and me in the plane, There is only 47 lbs on the nose gear. That is a very light load when taxiing or landing. As am matter of fact, when I taxi and hit a bump, the nose will jump off the pavement so I generally taxi with some down elevator. Remember, every plane is different depending on your building habits. When I built, I just built using common sense and did not worry about the CG till all was said and done. Maybe I just got lucky.
Mark Jones (N886MJ) Wales, WI My Web site: http://www.flykr2s.com/ Mailto:flyk...@wi.rr.com -----Original Message----- From: krnet-bounces+flykr2s=wi.rr....@mylist.net [mailto:krnet-bounces+flykr2s=wi.rr....@mylist.net]On Behalf Of Brad Payne Sent: Wednesday, December 13, 2006 9:02 AM To: kr...@mylist.net Subject: KR> Extending the Firewall or engine mount to adjust balance Hello all! I am just starting to build a KR2S and am gathering info prior to cutting any materials. I have heard it is easy to end up with a AFT CG in the KR2 and I plan on having a passenger most of the time I fly it. To help correct the balance, is it better to extend the wooden firewall forward by extending the wood airframe, or is it better to build the KR2S as shown on the plans then fabricate a longer engine mount? I realize it may be difficult if not impossible to calculate the weight and balance and the required Arm of the engine prior to building the airframe which makes me think fabricating a longer engine mount is the way to go. Is this acceptable to fabricate a longer engine mount? Would I add other new problems other than not being able to use a prefab cowling? How about excessive weight on the nose gear? Thanks, Brad Payne KR2S - N494BP -- bradleyspa...@gmail.com _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
