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Paint question

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woxofswa

Joined: 12 Aug 2008
Posts: 349
Location: AZ

Posted: Wed Nov 20, 2013 12:09 pm Post subject: Paint question

My airplane will be complete by end of year, just unassembled. I plan to take it to the paint shop in pieces, then do final assembly of the painted parts. 



The only potential fly in the ointment I see so far are the wing tips.  I've had the wings on for the fairing work, but they are off now.  I know it is best to match the tips to rigged ailerons.  Are there serious potential paint issues of attaching the tips after paint?  Any other considerations?  I'm really hoping to not have to assemble everything and tear it down again. 

Thanks in advance.

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_________________
Myron Nelson
Mesa, AZ
Flew May 10 2014

jdriggs49(at)msn.com
Guest

Posted: Wed Nov 20, 2013 12:19 pm Post subject: Paint question

That is what I did. Only downside (if you call it that) is that the screws holding it in aren't painted on the plane. Otherwise, no problem. I have heard other opinions and I've come to the conclusion it's a personal choice

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rleffler

Joined: 05 Nov 2006
Posts: 680

Posted: Wed Nov 20, 2013 12:36 pm Post subject: Paint question

Only if you got one of the wing tips whose shape is distorted.  Then you have to cut and re-align the tip, which would screw up your paint job.  



I did the same as you are planning, but I rigged the ailerons before taking to paint, then again during final assembly.   Even doing this, I've got one tip that ended up being off slightly. 



Not a big deal if your wings are still on in your shop.  As you mentioned, a real PITA if you have to reassemble everything. 



The other option is to delay painting the tips until you get the wings back on after paint.  



Bob



Sent from my iPhone



On Nov 20, 2013, at 3:09 PM, "woxofswa" <woxof(at)aol.com> wrote:






My airplane will be complete by end of year, just unassembled. I plan to take it to the paint shop in pieces, then do final assembly of the painted parts. 



The only potential fly in the ointment I see so far are the wing tips.  I've had the wings on for the fairing work, but they are off now.  I know it is best to match the tips to rigged ailerons.  Are there serious potential paint issues of attaching the tips after paint?  Any other considerations?  I'm really hoping to not have to assemble everything and tear it down again. 

Thanks in advance.



--------

Myron Nelson

Mesa, AZ

Emp completed, QB wings completed, legacy build fuse on gear.  FWF complete.





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=413599#413599

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_________________
Bob Leffler
N410BL - Phase I
http://mykitlog.com/rleffler

rnewman(at)tcwtech.com
Guest

Posted: Wed Nov 20, 2013 12:46 pm Post subject: Paint question

I painted everything separately.  I chose to use stainless steel screws everywhere for fairings and the fuel tanks.   I've never been satisfied with the look of painted screws after a few years in service.   So I'm real pleased with the result of painting the airplane in pieces and doing final assembly afterwards.     Of course I did have all the parts together for rigging of wings/flaps and ailerons unpainted-  one time. 

Bob Newman 

N541RV. 



Sent from my iPhone



On Nov 20, 2013, at 3:18 PM, Danny Riggs <jdriggs49(at)msn.com (jdriggs49(at)msn.com)> wrote:

[quote]   That is what I did. Only downside (if you call it that) is that the screws holding it in aren't painted on the plane. Otherwise, no problem. I have heard other opinions and I've come to the conclusion it's a personal choice.



 	  Quote: 	
		   Subject: Paint question

 From: woxof(at)aol.com (woxof(at)aol.com)

 Date: Wed, 20 Nov 2013 12:09:08 -0800

 To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)

 

 --> RV10-List message posted by: "woxofswa" <woxof(at)aol.com (woxof(at)aol.com)>

 

 My airplane will be complete by end of year, just unassembled. I plan to take it to the paint shop in pieces, then do final assembly of the painted parts. 

 

 The only potential fly in the ointment I see so far are the wing tips.  I've had the wings on for the fairing work, but they are off now.  I know it is best to match the tips to rigged ailerons.  Are there serious potential paint issues of attaching the tips after paint?  Any other considerations?  I'm really hoping to not have to assemble everything and tear it down again. 

 Thanks in advance.

 

 --------

 Myron Nelson

 Mesa, AZ

 Emp completed, QB wings completed, legacy build fuse on gear.  FWF complete.

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=413599#413599

 

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carl.froehlich(at)verizon
Guest

Posted: Wed Nov 20, 2013 12:46 pm Post subject: Paint question

Don't do it.  You risk messing up an expensive paint job.



Fit up the wings, flaps, ailerons and wing tips before paint.  A 1/4"

wingtip trailing edge offset will totally screw up your trim.  It is

impossible to get the wing tips on correctly unless you work from the

fuselage out - flaps, then ailerons, then wingtips.  Before you start

drilling and clekoing the tips, the trailing edge of the wing tips can be

moved up or down over an inch.  There is no way to get this right unless you

have the aileron in exactly the right rig to align the trailing edges.



After you are really sure you don't have any twist in your flaps, spend a

lot of time measuring aileron rigging every which way from Tuesday. This

includes careful measurement of aileron height both at the inboard and

outboard mounts.  Most RVs have a slight height difference between ailerons.

Fix this first, then work the linkage lengths on rigging.  After all that

you are ready to rig the wingtips.



Ask any RV builder that chased a heavy wing - aileron height tends to be the

last thing they look at but the most common cause (assuming no gross linkage

issues).



Carl

--

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woxofswa

Joined: 12 Aug 2008
Posts: 349
Location: AZ

Posted: Wed Nov 20, 2013 1:36 pm Post subject: Re: Paint question

Thanks for the input.  I should have mentioned that the plan is to paint just the base coat before assembly and the accents afterwards.

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_________________
Myron Nelson
Mesa, AZ
Flew May 10 2014

Jim Berry

Joined: 10 Jan 2006
Posts: 237
Location: Denver

Posted: Wed Nov 20, 2013 3:52 pm Post subject: Re: Paint question

I agree with Carl re rigging the flaps, ailerons and wing tips, but there is no reason that the wings need to be mounted to the fuselage; in fact I think it is easier to do all of that with the wings in a rack, leading edge down. No crawling around under the wings, fighting gravity to keep the flaps against the stops, etc.



Jim Berry

RV-10

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karolamy(at)roadrunner.co
Guest

Posted: Thu Nov 21, 2013 8:26 am Post subject: Paint Question

Hi Myron,



An exciting time coming for you with paint right around the corner!  One consideration that I didn't see anyone else speak of is skin dimpling.  I sort of cringe thinking of dimpling a nicely painted surface!  As you know, the procedure would be fit the tip, drill it, deburr it, then finally dimple the skin and c/s the wing tip.  Somewhere in there riveting on some platenuts  ( nutplates too)  to those tips.   Also if you are talking about doing a base coat/clear coat there is usually a max. 24 hour window between base and clear to consider - so my thinking is way too much work on those tips for that window?   Having to scuff the base coat and add more is the only option and that doesn't sound like much fun!   Just some thoughts…..



Regards,

Rich Hansen



 	  Quote: 	
		   My airplane will be complete by end of year, just unassembled. I plan to take it

 to the paint shop in pieces, then do final assembly of the painted parts. 

 

 The only potential fly in the ointment I see so far are the wing tips.  I've had

 the wings on for the fairing work, but they are off now.  I know it is best

 to match the tips to rigged ailerons.  Are there serious potential paint issues

 of attaching the tips after paint?  Any other considerations?  I'm really hoping

 to not have to assemble everything and tear it down again. 

 Thanks in advance.

 

 --------

 Myron Nelson

 Mesa, AZ

 Emp completed, QB wings completed, legacy build fuse on gear.  FWF complete.

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Jackm

Joined: 23 Jun 2013
Posts: 8

Posted: Thu Nov 21, 2013 8:47 am Post subject: Re: Paint question

Myron,

We just received ours back from paint. As far as wing tips, we had to cut them to length and slit the rear edge apart in order to match to align. Both tips had a tip up and it was impossible on ours to align with out cutting them apart. One thing I will mention is our painter had experience with finishing and painting Lancair, I think he did a excellent job around the windows and I hope no cracking the way they did this. I can send you some pictures if you are interested.

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Jackm

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