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09-07-2012, 01:34 PM
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Join Date: Sep 2012
Location: New Ulm,MN
Posts: 5
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Engine/Tires Vibrating/Heavy wing
Check to make sure the engine or part of it is not hitting inside the cow! Once that is clear I have read that the leading piston on the left is to be on the compression stroke as the propeller blade is horizontal with the ground, I did set mine up this way just to make sure. check the propeller tracking.
Wheel shake problem: I just found that my left wheel shakes a lot. First I installed the wooden stiffeners on the gear legs. Then when I jacked up the tire I found it to be out of round, not good! An egg shapped tire is hard to ride on even in a car.
Heavy Wing Problem: Make sure to check the vertial stabilizer allignment, that can be done easly with a string attached or held at the center of the front of the fuselage and place the string on each side of the stab. to see that there is equal distance on each side.
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09-08-2012, 06:03 AM
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Join Date: Aug 2009
Location: Wilmington DE
Posts: 323
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Quote:
Originally Posted by Ironflight
Just call him on the "teleophone"....
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What is this "telephone." If its not on the interwebs it doesn't exist 
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Matt Giordano Sr. and Jr.
RV-8 - N861MM
Wilmington, DE
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09-17-2012, 06:07 AM
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Join Date: Aug 2009
Location: Wilmington DE
Posts: 323
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Well I ordered the turn down tips and I am very hopeful that this will solve my vibration issue. I found out while flying the other day with my dad in the front seat (first time) that the exhaust is definitely causing a heavy vibration and hopefully THE vibration. He is much taller than me so the pedals are much more forward when he is flying. His heals are on the floor deadening the vibration, when he lifts his feet up, the plane sounds and feels how it is for me all the time when I fly. The pedal position for me puts my heels behind this point on the floor.
So I think I have two out of 3 issues resolved. Last thing is the heavy wing. I have narrowed it down to aileron symmetry, and found out that changing the trailing edges can solve it. Combo of squeezing the light wing and tapping a board on the trailing edge of the heavy wing actually made the opposite wing heavy. Hopefully in the next few days, all issues will be solved! I cant thank everyone enough for all of the help, comments, suggestions, etc. Also a big thanks to Van's, and Mitch Lock the east coast rep.
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Matt Giordano Sr. and Jr.
RV-8 - N861MM
Wilmington, DE
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09-17-2012, 09:35 AM
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Join Date: Dec 2008
Location: Big Sandy, WY
Posts: 2,567
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It takes awhile to sort out a new plane. It takes awhile to sort out an old plane. They will suck your life away, but you probably don't have anything better to do. I know I don't.
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Actual repeat offender.
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09-24-2012, 04:14 PM
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Join Date: Jul 2010
Location: Orlando, FL
Posts: 1,077
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Quote:
Originally Posted by hecilopter
There is a jig in the kit that locks the aileron bellcrank in centered position.
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Is that shown somewhere on the plans? I bought a -4 and have a heavy right wing. I'd like to start at the beginning and set everything up as mentioned using that jig. But I don't have one, so would like to find out how to get, or make, one. I can't find it in my May, 2011, preview plans.
Thanks,
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Chris Smith
Maule M5-180C (Sold)
RV-6 O-360 CS (Sold)
RV-4 O-360 FP (Sold)
Full-time in the other type of RV....
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09-25-2012, 08:09 PM
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Join Date: Feb 2012
Location: Wichita, KS
Posts: 24
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You are not alone!
I have zero RV experience to date (and am working to change that!), but I do work for a major GA manufacturer here in Wichita Kansas... and the heavy wing situation is a common squawk on new aircraft. It is commonly referred to as "wheelcock" and on some production aircraft it can take the production flight test department and mechanics numerous flights to fix. In fact, the problem often alternates left and right as adjustments are made, and in the process frustrates pilots, mechanics, and inspectors alike.
At any rate, I'm glad you are closing in on solving your issues and thanks to all those who posted advice - I've learned a lot and filed this thread away for future reference. 
__________________
Regards,
Nathan Harwood
RV-14 Wing Kit Ordered!
#140081
2012/2013 dues paid
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09-26-2012, 07:35 AM
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Join Date: Aug 2009
Location: Wilmington DE
Posts: 323
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Quote:
Originally Posted by nharwood
I have zero RV experience to date (and am working to change that!), but I do work for a major GA manufacturer here in Wichita Kansas... and the heavy wing situation is a common squawk on new aircraft. It is commonly referred to as "wheelcock" and on some production aircraft it can take the production flight test department and mechanics numerous flights to fix. In fact, the problem often alternates left and right as adjustments are made, and in the process frustrates pilots, mechanics, and inspectors alike.
At any rate, I'm glad you are closing in on solving your issues and thanks to all those who posted advice - I've learned a lot and filed this thread away for future reference. 
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Thanks for the reassurance that I am not alone. And yes hopefully this thread will be a great resource for builders in the future. Lots of suggestions in here. I think most people will be able to find a reply in this thread that applies to them.
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Matt Giordano Sr. and Jr.
RV-8 - N861MM
Wilmington, DE
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09-26-2012, 07:41 AM
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Join Date: Aug 2009
Location: Wilmington DE
Posts: 323
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Quote:
Originally Posted by ccsmith51
Is that shown somewhere on the plans? I bought a -4 and have a heavy right wing. I'd like to start at the beginning and set everything up as mentioned using that jig. But I don't have one, so would like to find out how to get, or make, one. I can't find it in my May, 2011, preview plans.
Thanks,
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I cant remember whether it was a pre-made part or a template I had to make. I am pretty sure that it is a part Van's gives you. You just stick it up in the inspection panel and use the two holes in it to line up your bellcrank.
Through this whole process, I've finally determined that my issue is aileron symmetry. I have raised and lowered flaps, adjusted push rods, sanded wing tips, loosened wing tips to try and get them to move up and down, checked incidence, elevators trailing edges, gear fairings on and off, etc. Found out in the end my rig and setup was probably perfect in the beginning, and I just screwed it up trying to chase down the problem. Now, I may have never found my issue if I didn't do any of that, but in the end, my heavy wing was caused by the shape of my ailerons. Every other change I made had very little effect, if any effect at all.
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Matt Giordano Sr. and Jr.
RV-8 - N861MM
Wilmington, DE
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09-26-2012, 03:25 PM
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Join Date: Mar 2009
Location: Rochester NY
Posts: 669
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On the 7 they give you the part and it's also in the plans (don't recall which page).
Dan
__________________
RV7A (N7101) - Flying 10/2008
CFI- SE/ME/Inst
A&P
KC2ZEL
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09-26-2012, 04:20 PM
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Join Date: Nov 2005
Location: Davis, CA
Posts: 1,156
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Quote:
Originally Posted by DanBaier
On the 7 they give you the part and it's also in the plans (don't recall which page).
Dan
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Vans part number is W-730. Not sure why I remember that, but it's stuck in my memory banks.
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Lars Pedersen
Davis, CA
RV-7 Flying as of June 24, 2012
960+ hours as of June 30, 2020. Where did the time go?
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