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Thread: Is It CH Rudder Peddles, Or Me...

  1. #1

    Default Is It CH Rudder Peddles, Or Me...

    Boy, I sure hope somebody here can help. I'm about to give up. Been struggling with correctly landing Cessna 172 Skyhawk for months. I've narrowed it down to the rudder peddles (control???)

    When I hit the ground (sometimes literally), the d*(*ED) plane heads violently to the left. Now I know that the Cessna, being a one engine machine has a left-turning tendency. But this is crazy. Then, when I give it right rudder, it heads in the opposite direct, just as violently.

    I have the brake fully deployed (which may, or may not be right). But the d**ED) plane is almost uncontrollably. Until it comes to a complete stop...usually where I don't what it to. Today I ended up totally on the right side of the runway...In the Edwards Air Force Base ditch, Rwy 22L.

    I have riddled with these peddles and riddle with them. Configured until I'm blue. I'm at my wits end.

    So, can anyone help me Am I doing something wrong?? Is it CH Rudder Peddles, or is it me?

    P.S. These peddles are brand new...straight out the box. Just so you know. Thanks, in advance....

  2. #2
    Join Date
    Nov 2006
    Location
    Fairfax, VA, USA
    Posts
    694

    Default

    1 - NEVER land with brakes on
    2 - Be sure you are close to stall speed when touching down. Full flaps may require a slight power
    increase
    3 - Make sure that rudder control (twist) on flight stick (if any) is disabled. Interference between two
    controls can cause erratic behavior
    4 - If you still have problems, reduce rudder pedal sensitivity by adjusting response curve in Controls

    Let us know how it goes.



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  3. #3

    Default

    Well thank you, johnost. I appreciate the response. I'll try tonight.

    1. Actually, the brakes aren't on until AFTER I land, but I push to toe brakes all the way down. Don't think that's right, now that I think about it.

    2. I'm landing at about 65kts, sometimes slower. In fact, sometimes the stall warning goes off, but by then, I'm so close to the ground, I ignore it.

    3. I don't start working the rudder controls until after the landing, on the roll down the runway. At least I THINK that's what I'm doing. At that point, everything is happening so fast....

    4. I'll definitely reduce the sensitivity...

    Again, thanks a lot
    Reg....

  4. #4

    Default

    Hi.
    If you have any Xwind selected turn that Off, set to Zero first until you get used to it, it's unnecessarily difficult in XP to land in Xwind..
    During landing / touch down do not touch the brakes until after you slow down, try to do a No brake landing.

    In a real World Cessna front wheel faces forward until you put some weight on it, the nose comes down, in the XP the front wheel is turning as soon as you touch the the rudder pedals, which makes more difficult to handle during landing than it needs to be.
    A threshold speed of 55 KTS is perfectly fine for a 172, with flaps down, they will fly down to 40 kts, I've had some older ones fly at 28kts, needs some foot work but still manageable.

    To make good landings you need to have Maneuvering at slow speed under control, practice that in the air ad make sure you have perfect control of altitude and heading with he horn on, around 55 kts or less, 1700 RPM, with 10 deg of flaps at 2000MSL.

    As you come on final get stabilized around 55 kts / 1400 RPM/ 200FPM and wait for it it will land itself,. after the nose touches down Power to idle, wait for slow down then apply the brakes.
    Try this: Stabilize about 3 miles out 500 ft AGL 10 deg of flaps, 1700 RPM, 55 kts level, trimmed for no hands, as you get to 2 miles reduce power to about 1450, do not touch the trim, just maintain center line with the rudder and wait for it. If you need some airspeed lower the none very slightly, if you need altitude add a bit of power, be patient it's very easy. I have a video I made but I am not sure how to post it here.
    Post here if you need more help, landing is one one the easiest maneuver in flying, but there is very little room for error.
    Last edited by flytv1; 09-11-2020 at 01:40 PM.

  5. #5

    Default

    Thanks, flytv1. I wrote everything down, and will practice tomorrow. Really appreciate the help. I'll also look for that video you mentioned. Thanks, again...
    Reg...

  6. #6

    Default

    "Landing is one of the easiest maneuvers in flying."

    Really?

  7. #7

    Default

    Quote Originally Posted by ianhr View Post
    Really?
    Hi Ian.
    Really.
    I've demonstrated the no hands landings, in Real flight, hundreds of times, try the technique I described above in the sim. In real life is much easier because the plane stabilizes in seconds compared to the sims that may take up to 3 minutes. In addition the response to controls is much better in real life...
    When you have to do a L8, Loop, even ground reference maneuvers there is a lot more control and work required. To do a perfect Inside loop is next to impossible and then there are lot more complicated maneuvers.
    I made a video in Xplane, hands off landing but I am not sure how to post it, if you follow the procedure above you should be able to easily accomplish it.

  8. #8

    Default

    The braking may be making the issue more difficult. The rudder peddles allow for some steering of the C172 while braking makes for tight turns.

    "The Cessna 172 (152, 175, 177, and 182 as well as others) all use steerable nose wheel by pushing (not depressing) the rudder pedals in the direction you want to go. If you want the nose to turn to the right, you push the right pedal forward, same with the left. You can augment this with differential steering if tighter turns are needed."

    https://aviation.stackexchange.com/q...e-link-purpose

    D

  9. #9

    Default

    "Landing is one of the easiest maneuvers in flying."

    While landing is hardly the most difficult maneuver one faces as a pilot, for the average sim pilot with no real-world flight experience, taking off, climbing, turning, flying straight and level, and descending are much easier. If you don't care how they look, even loops, rolls, lazy eights, et al. are pretty easy . But after having had the whole virtual sky to wander in, bringing your bird down to a relatively small spot on the surface at the right speed, in the right attitude, at the right sink rate and then bringing it to a successful stop can be a challenge.

    And you should bear in mind that for some people it can be discouraging to be told that the thing they're trying to master is "one of the easiest".

  10. #10

    Default

    Quote Originally Posted by ianhr View Post
    ....And you should bear in mind that for some people it can be discouraging to be told that the thing they're trying to master is "one of the easiest".
    I find that to be totally against what normal thinking is, and should be.
    If you can prove that the statement is correct there is no reason for anyone to feel that way. People are being told that this is difficult and than you have instructors that are making it difficult, most are just doing it because they do not know any better, and now you have someone with over 60 landings and still cannot do a simple landing. Why? mainly because they were told to expect all these phases, Round out, Flare.... and most people are missing the most important point, Set up early, Slow fly it and wait.
    Yes as you want more precision / accuracy... sure you can make more adjustments, but th basics are done. The plane is already in the proper attitude all you have to do make small adjustments and stay on the Centerline.
    It will not give you a precision landing but most runways are over .5 miles long as soon as you touch down, if you approach at the proper speed, you will slow down, and if you have some power during touch down reduce it to idle and in most cases you will never have to use brakes.

    @Mina, see if some of the settings I have included will help your handling. XPlane can be a pain stabilize after any, even small changes. Also make sure you do not have any other axes assigned to the Yaw.
    When you reduce power from 17-1800 RPM to 14-1500 do it very slowly otherwise the sim will do al kinds of gyrations / oscillations until it stabilizes.Click image for larger version. 

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