Quote Originally Posted by HighWing View Post

A tailwheel tilted slightly forward will introduce a shimmy tendency....
Lowell
I agree with Lowell 100%. It is my experience, having flown many different types of taildraggers, that the swivel axis should definitely not be angled forward. This is counter-intuitive to many people, but is a fact. I believe that the best is a perfectly vertical axis with the airplane loaded to max weight, with the corresponding spring deflection. This will necessitate it being angled back when lightly loaded or empty. I learned this the hard way with tailwheel shimmy so bad that it caused damage.