... for a low-wing monoplane such as the KR, a starting point would be to use 18% and 34% of MAC. For a wing with a 48" MAC, that is roughly 8-1/2" to 16-1/2" aft of leading edge .....
+++++++++++++++++++++++ When someone starts asking questions about CG location, he or she may be pretty close to launching - so it is important that they get the right info in the correct context. The info provided by OZ is good and would be accurate and relevant for a constant chord wing - but for a KR the info is incomplete and could be misleading in a bad direction - tail heavy airplanes are dangerous. On a KR2 built to plan, the net taper (sweep) on the outboard wing is notably forward, thus the overall CG location is displaced fwd relative to the calculated position of the centre section. The builder that establishes an aft CG limit of x% back from the LE and measures this on the centre section will be have a CG aft of what he thinks - maybe as much as 2" further back. OZ's statement is correct: "a wing with a 48" MAC, that is roughly 8-1/2" to 16-1/2" aft of leading edge". However, the mean chord on a KR /KR2 is not 48". (and the planform is not symmetrical) Take care Steve J
