REFLECTOR: RE: FINALLY SOME TRUE DATA -- NOW WHAT

Alex Balic alex157 at pwhome.com
Mon May 16 19:35:06 CDT 2005


Tom,
The plane tracks properly on the ground because it is on the ground, and the
wheels are causing it to track properly even at high speed- it would seem
that the winglets are a little bit off to me- probably both in the same
direction- this is what is causing you to fly crabbed- if the wings were out
of rig, then you would tend to roll- P factor wouldn't require almost full
rudder to correct in level flight.....
 
-----Original Message-----
From: Tom Martino [mailto:reflector-bounces at tvbf.org] On Behalf Of Tom
Martino
Sent: Monday, May 16, 2005 7:28 PM
To: reflector at www.tvbf.org
Subject: FINALLY SOME TRUE DATA -- NOW WHAT
 
Ok ... if I let my plane fly the way it wants, with wings level ... the
"ball" is way off to the left (on the ground it is neutral) and the left
wing wants to bank ... making a slight turn to the right.
 
To get the nose perfectly straight it requires a LOT of left rudder.  Then
the plane flees without any turning or banking tendencies.
I don't think any vertical surfaces (winglets or rudders) are out of rig
because at high speed ground roll (landing and taking off) the plane tracks
perfectly.  It is only when lift is developed that the "ball out of center"
phenomenon starts.
 
The trim tab did not help much and was removed.
 
I believe I need to decrease the angle of attack on my left wing to correct
the problem.
 
When I checked incidence ... they were right on.
 
By the way ... does "P" factor cause some of this problem?  If the left side
of my prop (as viewed from behind) develop more thrust ... wouldn't that
cause the plane to fly off to the right?
 
I examined my engine mount and it is not canted to cancel out the "P"
factor.  
 
Any thoughts?
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