Hi Jack,

Very interesting point, thanks for sharing it with us. I suppose we could classify this (toe-in/out) as tuning, and there probably isn't a perfect or right answer for all setups. I used to race motocross and tuning my gearing and suspension was paramount, but it changed constantly based on the track. So I kept close notes of what worked and replicated it every time I would revisit the track and the conditions. But I had a baseline to work from. I think toe-in/out, as it relates to race cars and jets could probably be used to tune/solve different problems. Example, for a race car steering behavior is more important than straight line stability(F1 not a drag-car), so toe-out (negative toe) is potentially preferred over a passenger car. Where a passenger car would tune for straight line stability, rather then steering behavior. Both right or correct, but specific to the use case. I suppose for our jets we probably want to determine what we want to solve for first, then adjust accordingly. In my case, I am looking for straight line stability and a heavier nose wheel presence, to aid in steering. Similar to pulling up on tail-daggers (up elevator) to place weight on the tail-wheel for steering. Your example sounds like a good solution as well.

I think the moral of the story is, if you think through the physics at play and implement a repeatable process you can use as a baseline, you're ahead of the game. It should help you determine what works or what doesn't work, more importantly, how to adjust. I have been eyeballing toe-in until now. I plan to set up new planes per Dave's suggestion as a starting point. Now I'll be able to test and add or remove toe-in per plane. I never had a baseline to work from, this is why I turn to RCU! You guys rock!