Originally Posted by Simon Hitchen
Option 1 is to shim the left wheel out by 1/2 a degree to make both wheels equal and have no toe in or out in the three point attitude.
Option 2 is to shim the right wheel inboard to give both wheels 1/2 degree toe in in the three point attitude.
You do NOT want toe-in on a tailwheel airplane!!!!!
Think about it this way, with toe-in if the aircraft starts to swerve left, centrifugal force puts more weight on the right wheel. If that wheel is toed in it will tend to pull the aircraft further left. A slight amount of toe-out will tend to pull the aircraft straight.
I learned a lot while designing a conventional gear for my Moni Motorglider. Check out "Landing Gear Design for Light Aircraft" by Ladislao Pazmany.
Another factor; if you look at other RV landing gear, Van calls for zero toe with weight off the airplane. The design of the gear toes-out slightly with the weight of the airplane on the gear.