I am surprised about the toe-in vs toe-out question. I'll try it but on my WWI birds, even straight ahead wheels cause problems on the ground. Thanks DAG!
The problem with taildraggers is that the main wheels are ahead of the CG. Once it starts to veer, it gets worse rapidly. If the plane leans over on the outside wheel, having it toed out a little should help make the nose go the same way the tail just did. Positive camber (wheels leaning out at the top) should also help. And, it helps to have the main wheels closer to the CG, but that can increase the tendency to nose over.
@@txkflier This gives a good overview of toe on tail draggers. acversailles.free.fr/documentation/08~Documentation_Generale_M_Suire/Train_d%27atterrissage/Train_principal/Reglages/Landing_gears_toe_in_or_toe_out.pdf
dag214 Yes, I just saw that page a few days ago. A friend asked me what to do on his Mustang and I seemed to recall (and also believed) that toe-out would help. When I Googled it, I came across a Model Airplane News article where the guy said to use toe-in. I said, “That’s not right” and when I clicked on the next link, it took me to that page. Small world.. ;-)
I agree. Folks should use dual rates and expo. Check the CG by flying level inverted. Toe-out works better than toe-in on taildraggers.
If you are marginal on power you don't want a tail heavy model, If you are flying off the prop it's not so critical.
I am surprised about the toe-in vs toe-out question. I'll try it but on my WWI birds, even straight ahead wheels cause problems on the ground. Thanks DAG!
Just a little toe out helps. .5 - 1.5 degrees.
The problem with taildraggers is that the main wheels are ahead of the CG. Once it starts to veer, it gets worse rapidly. If the plane leans over on the outside wheel, having it toed out a little should help make the nose go the same way the tail just did. Positive camber (wheels leaning out at the top) should also help. And, it helps to have the main wheels closer to the CG, but that can increase the tendency to nose over.
@@txkflier This gives a good overview of toe on tail draggers. acversailles.free.fr/documentation/08~Documentation_Generale_M_Suire/Train_d%27atterrissage/Train_principal/Reglages/Landing_gears_toe_in_or_toe_out.pdf
dag214 Yes, I just saw that page a few days ago. A friend asked me what to do on his Mustang and I seemed to recall (and also believed) that toe-out would help. When I Googled it, I came across a Model Airplane News article where the guy said to use toe-in. I said, “That’s not right” and when I clicked on the next link, it took me to that page. Small world.. ;-)
Preach it brother! Too much throw is the root of the majority of issues pilots experience. But(!), toe out on a taildragger!!! Am I missing something?
The front wheels (main) have about 2 degrees Toe out. Look up the document by Marvin V. Hoppenworth. EAA 2519. He has a write up on this.
acversailles.free.fr/documentation/08~Documentation_Generale_M_Suire/Train_d%27atterrissage/Train_principal/Reglages/Landing_gears_toe_in_or_toe_out.pdf