35% Extra 260 trimming question  
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All Forums >> TEAM RCU >> TEAM RCU - Mike McConville >> 35% Extra 260 trimming question
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35% Extra 260 trimming question - 9/21/2007 9:45:31 PM   
harryw13



Posts: 104
Joined: 12/16/2002
From: Homerville, OH, USA
Status: offline 		Mike,
I have your 35% Extra 260, with a DA 100 up front. For break in I'm using a Xoar 26x10 prop. Currently during a vertical uplines AND downlines, the plane rolls slightly left. I've had this issue with other plane, on downlines, but never uplines. Any ideas on correcting the problem.
Or should I wait untill the engines broke in, and I'm using my 3 blade Mejzlik 25x12, before I add any mixing.
Thanks

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Harry Wagner
       Post #: 1

RE: 35% Extra 260 trimming question - 9/24/2007 5:16:25 PM   
MMcConville


 

Posts: 2011
Joined: 6/26/2003
From: Champaign, IL, USA
Status: offline 		Definatley first use the prop you will end up with. But, thats a strange trimming issue. Sounds likely more mechanical. If you trim it neutral, pull up and see the roll then push back to level, being careful not us use aileron, does it again trim neutral in levwl flight?

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Mike McConville
Horizon Hobby

(in reply to harryw13)
       Post #: 2

RE: 35% Extra 260 trimming question - 9/26/2007 5:17:14 AM   
harryw13



Posts: 104
Joined: 12/16/2002
From: Homerville, OH, USA
Status: offline 		When you push back to level flight, it flies straight and level. I have about another 2.5 gallons of fuel untill the engine is broke in, then I'll put the 3 blade, back on and see what it does then.
Thanks

_____________________________

Harry Wagner

(in reply to MMcConville)
       Post #: 3

RE: 35% Extra 260 trimming question - 9/26/2007 3:19:59 PM   
MMcConville


 

Posts: 2011
Joined: 6/26/2003
From: Champaign, IL, USA
Status: offline 		If it still does this, put an incedence meter on the wings and check the panels root and tip for a warp. Thats a strange trimming issue.

_____________________________

Mike McConville
Horizon Hobby

(in reply to harryw13)
       Post #: 4

RE: 35% Extra 260 trimming question - 9/27/2007 1:26:24 AM   
harryw13



Posts: 104
Joined: 12/16/2002
From: Homerville, OH, USA
Status: offline 		I don't have a big enough incidence meter, To have the plane trimmed for level flight, the alierons are not flush. They are about a 1/16-1/8'' from being flush.
Thanks

_____________________________

Harry Wagner

(in reply to MMcConville)
       Post #: 5

RE: 35% Extra 260 trimming question - 9/27/2007 1:57:56 AM   
mithrandir



Posts: 683
Joined: 7/16/2003
From: adelanto, CA, USA
Status: offline 		Do you have access to a very flat large table... like a surface table... then you can level the plane and measure a "Water line" dimension for all the edges

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(in reply to harryw13)
       Post #: 6

RE: 35% Extra 260 trimming question - 9/27/2007 2:39:20 AM   
rcaviator-RCU


 

Posts: 212
Joined: 6/21/2003
From: Lexington, SC, USA
Status: offline 		With the open structure of the aileron, heating the covering will sometimes warp an aileron. Sight down the aileron from the root and tip to see if you can detect anything.

If you find something, flex the aileron to where it needs to be and reshrink the covering. Then you need to check and adjust the aileron linkage for binding as this may move one of the control horns slightly.

_____________________________

rcaviator

(in reply to mithrandir)
       Post #: 7

RE: 35% Extra 260 trimming question - 9/28/2007 12:27:38 PM   
harryw13



Posts: 104
Joined: 12/16/2002
From: Homerville, OH, USA
Status: offline 		I'm surprised I did'nt notice it earlier, but the left alieron has a pretty big warp in it. It warp's down at the tip. I'll try and fix it, but as big as the warp is, I'ts going to be hard to fix.
Thanks

_____________________________

Harry Wagner

(in reply to rcaviator-RCU)
       Post #: 8

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