The rudder on my Falconar F-12 was very light with no breakout force. If you took your shoes off and touch the rudder pedal with your toe where you could feel it, you had some rudder input. I always flew it with my shoes off. After shutting down the engine, I would open the gullwing door on my side and put my shoes out on the wing. Got a few funny looks. Really hard to have to much rudder. The only time you have to much power is when you run out of rudder.I was reading the flight review of the BD-4 in the latest kitplanes and the article indicated (in more words than I'm using here) that the rudder was overly sensitive.
How do you correct something like that?
My sense from the article was that there was very little breakout force and with just a little persuasion, the rudder would give a substantial amount of yaw. Looking at the pictures, it doesn't look like it has a huge aerodynamic balance, so I wonder if there is something that could be done with aspect ratio or trailing edge thickness?Reduce max throw, maybe? Only other thing I can of is changing the “gear ratio” between making rudder horns longer and/ or cables closet to the pivot point on the rudder pedals.
Hmm, I can see it reducing susceptibility to flutter of a control surface if it is mounted between the surface and the fin or fuselage... That would add force resisting movement in proportion to movement speed. Which means it would resist a lot if you are trying to move the rudder fast, but would resist only a little if you are squeezing on the rudder slowly - Yes? That would tend to damp off flutter, which is fairly fast movements, but have little effect on most small movements, like normal control inputs.Install a hydraulic damper. My Grob has a damper installed to prevent flutter, required by Airworthiness Directive.
Hmmm. In an ideal world, the damping would be at the rudder, picking off all of the rudder vibration and slowing any inputs to the rudder. Two bad parts: Packaging it without adding drag, and CG shift. Putting it under the seat minimizes CG shift, but leaves the springiness of the rudder cable system in the loop with the inertia of the rudder. The spring rate of the rudder cables is pretty high so remote damping probably works pretty well anyway. Preventing sharp rudder inputs comes along for the ride and will prevent flutter due to sharp inputs, which is a flutter trigger. So it works nice for flutter suppressing.The absorber is under the seat. Pushrod to pedals and pushrod to rudder. It's a taildragger. I was concerned about the slowed rudder response after installing it. About 1 second to full deflection from stop to stop. But it didn't seem to matter any after a few flights. The aircraft isn't very fast to respond like a short span Pitts.
Shows that some people will not like the control feel others love.