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  #1  
Old 12-25-2017, 12:35 PM
Boat Boat is offline
 
Join Date: Mar 2016
Location: Potter Valley, CA
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Default Full flaps flaperons stiff

The last couple of flights I've noticed the flaperons become stiff to operate when I pull on full flaps.

Anyone else have this problem or know what might be causing it?
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  #2  
Old 12-25-2017, 12:50 PM
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rongawer rongawer is offline
 
Join Date: Dec 2007
Location: Brentwood, CA
Posts: 254
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I have not experienced this, however, I recommend pulling all of the tunnel covers and inspecting the the system before you fly again. If there isnít anything that has obviously worn or is binding, than try spraying all of the pivots and rod ends with LPS-2, which is a great heavy lubricant.
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  #3  
Old 12-25-2017, 01:08 PM
DHeal DHeal is online now
 
Join Date: Sep 2006
Location: Windsor, California
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Also make sure that appropriate Bearing Bracket Brace SB (http://www.vansaircraft.com/pdf/sb14-12-06.pdf) has been complied with.
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  #4  
Old 12-25-2017, 02:40 PM
Rrhsch Rrhsch is offline
 
Join Date: Aug 2013
Location: Oconomowoc, WI
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Make sure the nuts on the control stick push rods that connect to the flaperon mixer bell-crank are not rubbing on the F-00049 wire cover. This would only be noticed when full flaps are used.
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  #5  
Old 12-25-2017, 05:15 PM
JBPILOT JBPILOT is offline
 
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Location: Jesup, Iowa
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Default Just a thought - -

If you are at 80kts, they will be stiff until you get down to say 65 kts. They should move easier as you slow down.
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  #6  
Old 12-25-2017, 10:15 PM
greghughespdx greghughespdx is offline
 
Join Date: Nov 2011
Location: Hillsboro, OR
Posts: 410
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If it's stiff on the ground, or if the feel has changed for you, take it apart and look at it. Not worth the risks that could potentially be involved, and pretty easy to inspect the assembly.
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  #7  
Old 12-25-2017, 10:22 PM
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Jetguy Jetguy is offline
 
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I agree with John. Check your ailerons on the ground with the flaps down. If they move smoothly then everything is fine. The ailerons normally are a little harder to move when you put the flaps down due to airflow across them.
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  #8  
Old 12-26-2017, 07:25 AM
dbhill916 dbhill916 is offline
 
Join Date: May 2013
Location: Columbus, OH
Posts: 119
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Quote:
Originally Posted by Jetguy View Post
I agree with John. Check your ailerons on the ground with the flaps down. If they move smoothly then everything is fine. The ailerons normally are a little harder to move when you put the flaps down due to airflow across them.
I discovered that if I put the flap lever all the way down, below the "0į" stop, the ailerons become very, very sensitive and the plane feels surprisingly squirrelly in roll. I was quite surprised at how much of a control feel change is generated by a relatively small deflection into "reflex flap" position.

Like the other commenters suggested, if it's different on the ground then make sure everything is OK mechanically. On the other hand, if it's only during flight, then it may be just aerodynamic.
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  #9  
Old 12-27-2017, 11:33 AM
Top Cat Top Cat is offline
 
Join Date: May 2014
Location: Fort Mill SC
Posts: 316
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On the ground, when doing the control check, I do it with flaps at each position not just once before takeoff.
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