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Old 06-17-2004 | 08:25 AM
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MinnFlyer
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From: Willmar, MN
Default RE: Taildragger as first plane?

ORIGINAL: Hurricane90

Go for the taildragger. I've never even flown a tricycle gear plane so I don't know the difference.
This is exactly the kind of advise that makes me nuts.

Basically you're saying "Take my advice, cause I don't know what I'm talking about."

Allow me to elaborate on the "Taildragger vs Trike" delemma:

Which of these is easier to do:

1) Park a car in a stall with a cross wind
2) Pull a boat into a slip on a fast moving river with a cross wind

Obviously it is easier to park a car because you have wheels that are in solid contact with the ground. The wind plays very little if anything to do with it, and there is no River current in the road.

Now, let's equate that to Trike vs TD:

With a Trike gear, you have three wheels in solid contact with the ground. One of those wheels provides steering - again, it steers by turning a wheel which is in solid contact with the ground. The plane can not (easily) nose over, or move side-to-side without your control. And when you give control, the plane responds immediately.

With a Taildragger, shortly after you start to roll, the tailwheel leaves the ground. You now have only two wheels in contact with the ground and they are side-by-side (As opposed to front and back like a motorcycle) so they can pivot around both the Yaw and Pitch axes.

Now, without getting too complicated, let's look at the forces involved...

The engine is pulling the plane forward while the main wheels are providing drag - So the plane wants to nose over, and you must correct this tendency by holding UP elevator... But not TOO much... if you hold too much, the plane can take off permaturely and snap back into the ground. And if you don't hold enough, the prop will hit the ground, and you don't want that either.

Next, once that tail lifts, aside from controlling its elevation, you must control its side-to-side motion with the control you are least familliar with - The Rudder. Keep in mind three things:

1- You are overcoming any type of wind such as cross wind PLUS any prop effect, and
2- You are having to overcome the torque of the engine
AND
3- You are having to do this with NO SOLID CONTACT WITH THE GROUND.

This brings us to the "Pendulum effect". In other words, when you're turning Right with a wheel on the ground, then you turn Left, the response is immediate. However, when you're turning Right with only a rudder moving through the air, and then turn left, the momentum of the tail will continue to swing in the first direction before changing to the next, so there is a time lag between the time control input is given, and the time the airplane reacts.

Since reaction time is not immediate, the new pilot often adds MORE Left Rudder than is needed. Once the plane reacts to the control input, the turn has been over-corrected, and the tail swings too far, so the pilot has to give Right rudder to correct his mistake - and we have the beginnings of the proverbial "Vicious Cycle"

Keep in mind, this is all happening while you're balancing the elevator! (We don't want that prop to hit!)

Now, some taildraggers handle more easily that others, there are too many contributing factors to get into.

But the bottom line is:

Everyone has a different learning curve, so the choice is yours. You can take your driving lessons with an Automatic Transmission, or a Stick.