It might on the 10" but let's discuss this for a minute. Generally speaking the larger the Tailwheel the more tendency to shimmy. The tailwheels have some friction built in anyway and I build the 10" with an extra wavy washer to increase the friction, so it hasn't been a problem. The key thing is making sure you have proper kingpin angle. Go back and take a look at the previously posted pictures of the tundra Tailwheel mounted on Mark's Bearhawk and see the kingpin angle. That is the proper angle with no weight in the airplane. Mark recently changed out his leaf spring because the old one had straightened out (relaxed) and the king pin was vertical with no weight in the plane. When he loaded the plane up with people in the back and baggage the 10" Tailwheel would shimmy. After he changes out the leaf spring to this one shown in the pictures, no more shimmy.
So a properly set up (proper kingpin angle) 8" or 10" Bearhawk Tailwheel built by us, has enough friction built in to not have a tendency to shimmy.
Adding more friction makes steering a bit harder. My fear is someone would have an improper kingpin angle, or loose mounting bolts and then compensate by tightening up the friction control.
Eric Newton - Long Beach, MS
Bearhawk Tailwheels LLC
Bearhawk Manuals
So a properly set up (proper kingpin angle) 8" or 10" Bearhawk Tailwheel built by us, has enough friction built in to not have a tendency to shimmy.
Adding more friction makes steering a bit harder. My fear is someone would have an improper kingpin angle, or loose mounting bolts and then compensate by tightening up the friction control.
Eric Newton - Long Beach, MS
Bearhawk Tailwheels LLC
Bearhawk Manuals
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