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05-06-2012, 10:52 AM
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Join Date: Oct 2005
Location: Savannah, GA
Posts: 1,849
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Our right wing was heavy so we lowered the wing tip slightly which helped to where it was close enough. We cut out some material and was able to flex the tip down some.
__________________
Todd
N110TD
RV-10 Vesta V8 LS2/BMA EFIS/One formerly flying at 3J1 Hobbs stopped at 150 hours
Savannah, GA and Ridgeland, SC
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05-06-2012, 12:18 PM
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Join Date: Jun 2006
Location: Waycross, Ga.
Posts: 243
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wingtips
My wingtips had a bad bow on the trailing edges both sides and were way out of line to the aileron/flap neutral setting. I had to split them open along the trailing edge (with a hacksaw blade) and grind out material to get a flat fit. I packed them again with flox and resin and made a board clamp extending on to the aileron (in neutral position) and clamped them till cured. that was before first flight. a small amount of flex in the trailing edge of those wingtips will act like a trim tab.
__________________
Claude Stokes (sportpilot)
Finished Building an RV-10 and a Titan Tornado 2 
RV10 approaching 150 hours Vans kit 40418
See Pictures of the RV10 here. http://btconline.net/~sportpilot/RV10/boatright
Waycross, Ga. Airport KAYS
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05-06-2012, 04:22 PM
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Join Date: Mar 2007
Location: Denver, CO
Posts: 211
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Double checked
Okay, I've double checked most of the things. I noticed: Wing incidence angles appear to match within 1-deg, or my ability to measure them. That's a relief. Ailerons held their previous adjustment, but one could do with a bit more change. Flap (up) angles are pretty darn close, but the left side is up about 3/32" relative to the fuse bottom, while the right is pretty much even.
So, now that I've vented and gotten more advice, I think I'll try the following and see if/what makes the difference.
1) Adjust one aileron further
2) Lower left flap slightly to be even with fuse bottom like the right
3) Adjust left wing tip upward curvature
I'll report back next weekend after testing those in order.
Thanks,
Dwight
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RV-10 #40762 - 100 hrs+
Denver, CO
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05-06-2012, 09:09 PM
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Join Date: Oct 2007
Location: Calgary Alberta Canada
Posts: 456
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Quote:
Originally Posted by Space Cadet
Troy, I assume you're imbalance was small, say within the range of a fuel imbalance?
Dwight
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I could just trim it out with full tanks. If I burnt fuel out of the heavy tank first I needed less trim. I cut and moved all my tips trailing edge as well (they were a mess as stock) but it just was not quite enough. Next step was the hinges but I opted for the trim tab.
__________________
Troy Branch
RV10 Built and Flying Since Feb 2009
950hrs Plus
CC EX-2 Flying
SuperSTOL Built and Sold
RV9 Built and Sold
Avid Aerobat Built and Sold
Dues paid Nov 2019
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05-07-2012, 12:13 PM
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Join Date: Jul 2009
Location: Dixon Ca
Posts: 91
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Quote:
Originally Posted by Space Cadet
Okay, I've double checked most of the things. I noticed: Wing incidence angles appear to match within 1-deg, or my ability to measure them. That's a relief. Ailerons held their previous adjustment, but one could do with a bit more change. Flap (up) angles are pretty darn close, but the left side is up about 3/32" relative to the fuse bottom, while the right is pretty much even.
So, now that I've vented and gotten more advice, I think I'll try the following and see if/what makes the difference.
1) Adjust one aileron further
2) Lower left flap slightly to be even with fuse bottom like the right
3) Adjust left wing tip upward curvature
I'll report back next weekend after testing those in order.
Thanks,
Dwight
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Well I would start by getting the flaps exactly even. 3/32 on the rt side lower then the left side would make a large lt wing heavy. I have been there more then once. I would start there. Let us know what worked for you.
John
__________________
John Cumins A & P for way to long
N864JF Reserved
Emp complete , slow build Wings Fuel Tanks Finished, ailerons, and bottom wing skins ready to rivet on. Working on Flaps
My Build log http://websites.expercraft.com/jcrv10
Home Base VCB Nut Tree
Eaa 1230 VP
VAF 2015 Dues Gladly Paid
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05-08-2012, 10:20 AM
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Join Date: Mar 2007
Location: Woodinville, WA
Posts: 533
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I have the same issue (heavy right wing), which is solved by placing a 6" long and 1/4" thick trim tab on the bottom of the left aileron. I checked, rechecked, and triple checked everything, but couldn't get it fixed, so am just using the tab. Van's says it's normal and no big deal and told me that the prototype RV-10 and Van's personal RV-10 both have aileron tabs. The plane flies straight otherwise.
Don't bother messing with the flaps--it makes little difference (I tried), and you want the flaps up against the spar in reflex; otherwise, you're stressing the flap actuation components at cruise speeds.
-Rob
__________________
Rob Kochman
RV-10, Flying as of March 2011 ( blog)
Paine Field (KPAE)
EAA Chapter 1440
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05-08-2012, 01:42 PM
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Join Date: Mar 2007
Location: Denver, CO
Posts: 211
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No joy #1 and #2
Flew short test flight today after fixing #1 and #2 (more aileron adjustment and flap adjustment). No real noticeable change, maybe slightly better. I now doubt #3 (adjust wing tip angle) will do anything either, but I've got the fix in place and epoxy drying, so will test it later in the week. I'm nothing if not obstinate.
Rob, thanks and good comment on the flap adjustment, I think the one I adjusted is indeed off the stop now so will set it back again, especially since it made almost no difference.
Can someone post a link to a picture of the tab (or where to find the instructions) so I know what I'm doing?
Thanks,
Dwight
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RV-10 #40762 - 100 hrs+
Denver, CO
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05-08-2012, 09:12 PM
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Join Date: Nov 2009
Location: Arlington, tx
Posts: 205
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Speed fairings?
Do you have speed fairings on? If these are not aligned just right, you can have asymmetrical drag that might cause the symptoms you are describing. There are a few other threads describing this condition. Good luck in solving your problem.
__________________
Builders: John & Amanda
Model: RV 6A
Based - KJWY
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05-09-2012, 08:57 AM
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Join Date: Jan 2009
Location: Chino, CA
Posts: 202
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wing heavy
One degree diference in incidene is alot I typicaly try to get them witin one tenth of a degree
good luck ,Jerry
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Jerry Scott
Rocket II
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05-09-2012, 02:17 PM
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Join Date: May 2007
Location: St. Helens OR
Posts: 429
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I agree
Quote:
Originally Posted by RV Jerry
One degree diference in incidene is alot I typicaly try to get them witin one tenth of a degree
good luck ,Jerry
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One degree is a big difference, how are the stall characteristics, one wing dip when things are coordinated.
Randy 8A
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