Author Topic: Stoopid question F4u  (Read 1452 times)

Offline bagrat

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Stoopid question F4u
« on: November 18, 2009, 01:22:03 AM »
ok so i understand that P-factor an torque is what causes the plane to pull hard to the left as throttle increases, but what is the force that causes the F4u to pull hard to right when the engine is idol (as i try to come to rolling stop after landing)?

I know it can easily be overcome by proper use of rudder or inputting a little power but. WHy? :uhoh
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Offline Marshal

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Re: Stoopid question F4u
« Reply #1 on: November 18, 2009, 01:24:20 AM »
Do you have your flaps down ?

If so, try to retract them after wheels touch down and see if that helps.
I have noticed the same thing with different aircraft, but when I pull the flaps back
in I have no problems.

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« Last Edit: November 18, 2009, 01:30:07 AM by Marshal »

Offline SkyRock

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Re: Stoopid question F4u
« Reply #2 on: November 18, 2009, 01:35:38 AM »
ok so i understand that P-factor an torque is what causes the plane to pull hard to the left as throttle increases, but what is the force that causes the F4u to pull hard to right when the engine is idol (as i try to come to rolling stop after landing)?

I know it can easily be overcome by proper use of rudder or inputting a little power but. WHy? :uhoh
pull back on the stick to catch the tail wheel... momentum swings both ways.....it's all good.

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Offline TW9

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Re: Stoopid question F4u
« Reply #3 on: November 18, 2009, 01:45:57 AM »
letting it roll a little bit b4 applying brakes right away helps a ton also
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Offline Chalenge

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Re: Stoopid question F4u
« Reply #4 on: November 18, 2009, 03:35:24 AM »
ok so i understand that P-factor an torque is what causes the plane to pull hard to the left as throttle increases...

I think its p-factor - right and torque - left but Im a no-engine kind of guy.  :D
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Offline bagrat

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Re: Stoopid question F4u
« Reply #5 on: November 18, 2009, 09:21:01 AM »


well all these things do help an i appreciate the replys, but i dunno even if it is just a beastfull momentum it seems i dont find my self ever spinning out to the left but  once it begins to go right its GONNA GO right.

anyways ill be sure an retract flaps as soon as i touch down, maintian back pressure until stopped. apply breaks a few seconds after rolling from now on, and definitely be sure to release right  rudder once plane slows enough an kick left rudder directly after.
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Offline Shuffler

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Re: Stoopid question F4u
« Reply #6 on: November 18, 2009, 09:46:16 AM »
Your swinging a prop over 13 feet in diameter. It can affect a lot of things.

The posts about raising flaps after touch down (allows your brakes to stop you better because of weight) and pulling back slightly on the stick as your speed drops after touch down (locks the tail wheel) are your best bets to defeat this issue.
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Offline PewterC5

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Re: Stoopid question F4u
« Reply #7 on: November 18, 2009, 09:52:49 AM »
Also become familiar with the "C" (left wheel brake) and "V" (right wheel brake) keys. They almost cometely eliminate spin outs unless you were too far around already. They make a world of difference landing and taxying the f4u.

Offline Getback

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Re: Stoopid question F4u
« Reply #8 on: November 18, 2009, 01:56:43 PM »
My 2 cents, it's the rudder set up in combat mode that makes the plane go right with no engine. My best guess is to fight the torque of the engine.

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Offline colmbo

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Re: Stoopid question F4u
« Reply #9 on: November 18, 2009, 02:10:31 PM »
Left turn is p-factor and some other stuff...torque rolls the airplane.

If you're trimmed to counter left turn with the engine running, once you shut off the engine or go to idle you'll go right because you are no longer "trimmed" for you power condition.
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Offline Babalonian

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Re: Stoopid question F4u
« Reply #10 on: November 18, 2009, 04:13:10 PM »
Could be a couple of things, most all of them have been mentioned here:

1 - Momentum from the flight before touching down, or coming in to land at an agressive angle to the runway.  Come down easy and straight, imediatley after touching down pull your flaps all the way up and then apply the brakes a second or two after letting it settle down on the runway a little bit.  Definetley get your tailwheel down and locked on the ground ASAP to help stabalize the plane while it's on the ground.  Learn the left and right wheele brakes too, they ontop of the rudder come in handy for lightly tapping to correct any directional problem you might have on the ground.

2 - Your trim settings are likely set in automatic combat mode.  This means the trim is settup to counter the torque and p-factor of your aircraft, with those factors gone or throttled down then the trim is causing you to drift in teh oposite direction.  Learn to manual trim a bit in the game if you haven't already.  It'll come in really handy when you need it (IE: If you loose a big chunk of your plane and full stick in __ direction just isn't enough input to counter it, full trim might just be that little extra input you need to make it home.  You go into a fast dive and your control surfaces become unresponcive, start slaming your trim in the desired direction you need to go to get out of the dive and the plane begins responding again quickly.  If you have an engine problem and you need those extra yards/miles of efficient engine-less glideing to make it).

(3 - I'm assuming the landing strip you're trying to tackle is not moving.  If it's a carrier, there's always the possibility of it turning and changing cource on you while you land.)
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Offline Phanza

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Re: Stoopid question F4u
« Reply #11 on: November 18, 2009, 04:49:50 PM »
As said in the previous post, your trimming is out of whack. Check your rudder trim.

Pulling all the way back in the joystick locks the tailwheel (game mechanic) that helps alot too.

Offline bagrat

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Re: Stoopid question F4u
« Reply #12 on: November 18, 2009, 04:52:08 PM »
yes thx again i'm sold on the combat trim theory, so now i feel better. thanks for everyones imput. i originally believed there was some sort of glitch occuring in witch the left turn tendencies were being reversed by reducing throttle, but everyones imput put that idea to rest..............so how bout them dallas cowboys
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Offline Babalonian

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Re: Stoopid question F4u
« Reply #13 on: November 18, 2009, 06:08:33 PM »
yes thx again i'm sold on the combat trim theory, so now i feel better. thanks for everyones imput. i originally believed there was some sort of glitch occuring in witch the left turn tendencies were being reversed by reducing throttle, but everyones imput put that idea to rest..............so how bout them dallas cowboys

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Offline thorsim

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Re: Stoopid question F4u
« Reply #14 on: November 20, 2009, 01:42:31 PM »
you are trimmed for a certain p-factor changing the engine settings changes the p-factor and your plane will "roll/yaw" accordingly until you correct.  

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« Last Edit: November 20, 2009, 01:46:48 PM by thorsim »
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