> I want neutral trim at all speeds from 60mph to 200 (if my build > is non-LSA spec) >+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
If you are saying you want to build a KR that requires no movable pitch trim tab, you've got a tough hill to climb. Every airplane is full of compromises, what works at one speed is wrong for other speeds. No airplane I've ever seen or flown requires neutral trim at all speeds. Some aircraft have such a small speed envelope that when set up correctly they really don't require pitch trim tabs. Variable pitch propellers are another example of where you need to change characteristics of components depending on speed. Then there are flaps, lead edge slats, etc. If you are saying you want zero control forces at any speed, then it's just a matter of sizing the tabs and building in the necessary range of movement. Larry Flesner
