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Heavy left wing

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aspen1150(at)yahoo.com
Guest

Posted: Mon Jul 24, 2006 7:16 am Post subject: Heavy left wing

Just recently started flying my XL and notice it takes most all of the aileron trim to bring left wing up level.

  I've seen this subject addressed before but don't recall what a solution might be. Would raising the rear spar location on the right wing help as I don't believe adding a larger trim tab is the right answer ????

  Thanks for any suggestions you might have.

  Jim 

  N105JT

cffd(at)pgrb.com
Guest

Posted: Mon Jul 24, 2006 8:12 am Post subject: Heavy left wing

Jim,

  

 I added a small fixed trim on the light wing  flaperon/aileron (also the right wing).  The heavy wing was due to the  spring and pulley I have to keep the elevator cables from  rubbing.  At first I tried the tab on the left wing, but I found  the light/right wind tab was much more effective.  It is about 7  inches by 3 inches riveted to the aft of the trailing edge.  

  

 But first try taping a tab on the aileron with  duct tape to get the size and how much it need to be bent down.  I  flew several months with the tab taped on, just checked  before every  flight.  It may give a bit as the riveted tab took less  bend.

  

 Chuck D.

 N701TX  

 [quote]   ---

p.mulwitz(at)worldnet.att
Guest

Posted: Mon Jul 24, 2006 8:19 am Post subject: Heavy left wing

Hi Jim,



I'm not flying my XL yet, but I have listened to a bunch of 

discussion of this subject.



First, let me say that the XL is so light that the weight of the 

pilot on the left side of the CG with no passenger will make the 

plane want to roll left.  If this is the root of your problem then it 

seems trim is the way to handle it since you want to change the trim 

when carrying a passenger.



Let me ask a few questions to help understand your condition:



1.  Is your heavy wing only when you are flying solo?

2.  Do you have the standard aileron hinges or piano hinges installed?

3.  Your comment about full aileron deflection to correct the heavy 

wing - at what airspeed is this statement made?

4.  Have you just started flying your plane?  How many hours does it have?



Perhaps someone can make sense of your problem with the above 

questions answered.



Paul

XL fuselage

do not archive



At 08:14 AM 7/24/2006, you wrote:

 	  Quote: 	
		  Just recently started flying my XL and notice it takes most all of 

the aileron trim to bring left wing up level.

I've seen this subject addressed before but don't recall what a 

solution might be. Would raising the rear spar location on the right 

wing help as I don't believe adding a larger trim tab is the right answer ????

Thanks for any suggestions you might have.

Jim

N105JT


	


-

aspen1150(at)yahoo.com
Guest

Posted: Mon Jul 24, 2006 11:46 am Post subject: Heavy left wing

Paul,

  The questions you have asked.

  1.  The problem is the same if I sit in the right seat with a lighter pilot flying,

  2.  I have the standard aileron hinges, not the piano hinges.

  3.  At all speeds I need to use down aileron trim in the left wing to bring that wing up.

  4. Yes just started and have about two hours of air time.

  Thanks

  



Paul Mulwitz <p.mulwitz(at)worldnet.att.net> wrote:

  [quote]--> Zenith-List message posted by: Paul Mulwitz 



Hi Jim,



I'm not flying my XL yet, but I have listened to a bunch of 

discussion of this subject.



First, let me say that the XL is so light that the weight of the 

pilot on the left side of the CG with no passenger will make the 

plane want to  roll left. If this is the root of your problem then it 

seems trim is the way to handle it since you want to change the trim 

when carrying a passenger.



Let me ask a few questions to help understand your condition:



1. Is your heavy wing only when you are flying solo?

2. Do you have the standard aileron hinges or piano hinges installed?

3. Your comment about full aileron deflection to correct the heavy 

wing - at what airspeed is this statement made?

4. Have you just started flying your plane? How many hours does it have?



Perhaps someone can make sense of your problem with the above 

questions answered.



Paul

XL fuselage

do not archive



At 08:14 AM 7/24/2006, you wrote:

[quote]Just recently started flying my XL and notice it takes most all of 

the aileron trim to bring left wing up level.

I've seen this subject addressed before but don't recall what a 

solution might be. Would raising

cffd(at)pgrb.com
Guest

Posted: Mon Jul 24, 2006 11:47 am Post subject: Heavy left wing

By the way, Chris H. says to do this, i.e. tape a  tab on to get the right size and bend, saves a lot of rework.  I have even  taped on air diverters for oil cooling to get them right, works  fine.

 Chuck D.

 [quote]    

   Jim,

    

   I added a small fixed trim on the light wing    flaperon/aileron (also the right wing).  The heavy wing was due to the    spring and pulley I have to keep the elevator cables from    rubbing.  At first I tried the tab on the left wing, but I found    the light/right wind tab was much more effective.  It is about    7 inches by 3 inches riveted to the aft of the trailing edge.     

    

   But first try taping a tab on the    aileron with duct tape to get the size and how much it need to be bent    down.  I flew several months with the tab taped on, just    checked  before every flight.  It may give a bit as the riveted    tab took less bend.

    

   Chuck D.

   N701TX  

   [quote]     ---

p.mulwitz(at)worldnet.att
Guest

Posted: Mon Jul 24, 2006 12:30 pm Post subject: Heavy left wing

Hi Jim,



 I guess this all comes down to a judgement call.



 I would start by taping a small trim tab to the right aileron as suggested by Chuck.  After you learn how much actual movement you have remaining after balancing out the roll tendency you can decide if you want to make a more permanent change like you were considering by moving the trailing edge of one of the wings.  A simpler solution would be to just rivet the trim tab you have taped in place and worry about other issues for a while.



 You could also consider adding the electric trim tab designed for the XL.  I built one of those on the first pass, but I think you can add it without too much problem.  You can run the wiring between the aileron and flap and the rear channel to get to the fuselage.  Then it is just a matter of coming up with a switch arrangement and wiring it up.



 Good luck,



 Paul

 XL fuselage



 



  	  Quote: 	
		  The questions you have asked.

 1.  The problem is the same if I sit in the right seat with a lighter pilot flying,

 2.  I have the standard aileron hinges, not the piano hinges.

 3.  At all speeds I need to use down aileron trim in the left wing to bring that wing up.

 4. Yes just started and have about two hours of air time.

 Thanks

  	
 

  -

rdewees(at)mindspring.com
Guest

Posted: Mon Jul 24, 2006 2:00 pm Post subject: Heavy left wing

Jim,

Have you considered making a one-half  turn change to the aileron 

connecting rod between the bell crank and the aileron horn? It's easier 

than a trim tab if the condition exists in all modes of flight.  You 

might have a slight trim problem.

    BTW if you end up making the electric trim tab for the wing I would 

suggest making the tab larger than the original plans suggested.  Mine 

makes little difference at all unless it's almost fully deflected.

 Good luck on the adventures ahead!

Ron



do not archive



Paul Mulwitz wrote:



 	  Quote: 	
		   Hi Jim,



 I guess this all comes down to a judgement call.



 I would start by taping a small trim tab to the right aileron as 

 suggested by Chuck.  After you learn how much actual movement you have 

 remaining after balancing out the roll tendency you can decide if you 

 want to make a more permanent change like you were considering by 

 moving the trailing edge of one of the wings.  A simpler solution 

 would be to just rivet the trim tab you have taped in place and worry 

 about other issues for a while.



 You could also consider adding the electric trim tab designed for the 

 XL.  I built one of those on the first pass, but I think you can add 

 it without too much problem.  You can run the wiring between the 

 aileron and flap and the rear channel to get to the fuselage.  Then it 

 is just a matter of coming up with a switch arrangement and wiring it up.



 Good luck,



 Paul

 XL fuselage

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Tue Jul 25, 2006 6:13 am Post subject: Heavy left wing

If memory serves me right the  C150 & 172 don't use any tabs on the ailerons.  They only have  adjusting cams on the rear spars.  To keep the plane clean and slippery in  the air stream that is the route I would go.  I would try to balance the  roll solo because if you have to carry a heavy person in the right seat you can  always temporarily tape a "helper tab" on the left aileron.

  

  

 

Noel [quote]   

   --

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

bryanmmartin

Joined: 10 Jan 2006
Posts: 1018

Posted: Tue Jul 25, 2006 10:15 am Post subject: Heavy left wing

All that will do is move the neutral stick position left or right, it will not apply any correcting force to trim the airplane. It sounds like he has to do something to correct the wing rigging. Changing the angle of incidence of one of the wings is one way to do this.

  

  	  Quote: 	
		  -------------- Original message -------------- 

From: ron dewees <rdewees(at)mindspring.com> 



 	  Quote: 	
		   Jim, 

 Have you considered making a one-half turn change to the aileron 

 connecting rod between the bell crank and the aileron horn? It's easier 

 than a trim tab if the condition exists in all modes of flight. You 

 might have a slight trim problem. 

 

	

	


 --

Bryan Martin 

N61BM, CH 601 XL, 

RAM Subaru, Stratus redrive 

do not archive

_________________
--
Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive.

NYTerminat(at)aol.com
Guest

Posted: Tue Jul 25, 2006 11:40 am Post subject: Heavy left wing

If the 601 uses a bungee to keep the elevator cables separated like the  701, move it to one of the elevator cables so that it pulls the stick right.  This worked on my 701. Does the stick naturally want to move to the left while  it is on the ground??? This is a good way to check.

  

 Bob Spudis

 N701ZX   CH701/912S

  

  

  

 In a message dated 7/25/2006 2:17:18 P.M. Eastern Daylight Time,  bryanmmartin(at)comcast.net writes:

  	  Quote: 	
		     All that will do is move the neutral stick position left or right, it    will not apply any correcting force to trim the airplane. It sounds like he    has to do something to correct the wing rigging. Changing the angle of    incidence of one of the wings is one way to do this.

    

    	  Quote: 	
		  --------------      Original message -------------- 

From: ron dewees      <rdewees(at)mindspring.com> 



 	  Quote: 	
		   Jim, 

 Have you      considered making a one-half turn change to the aileron 

 connecting      rod between the bell crank and the aileron horn? It's easier 

 than a      trim tab if the condition exists in all modes of flight. You 

 might      have a slight trim problem. 

 

	

	


   --

Bryan Martin 

N61BM, CH 601 XL,    

RAM Subaru, Stratus redrive 

do not  archive

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