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Flaps Rubbing Top Skin Overhang?

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schmoboy(at)cox.net
Guest

Posted: Sun Feb 19, 2006 10:03 pm Post subject: Flaps Rubbing Top Skin Overhang?

I temporarily attached the flaps this weekend to set neutral for aileron 

actuation.  I noticed when bottoming out the flaps against the rear spar 

as instructed, that the flaps (both wings) rub on the overhang of the 

top skins.  They barely rub, but rub none the less.  Is this normal?  I 

would hope not, as I can imagine that nice new paint would be rubbing 

off every time flaps are used.



If this is not desired/normal, any suggestions?



Thanks,



-Sean #40303 (about to start bottom skins)

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Tim(at)MyRV10.com
Guest

Posted: Mon Feb 20, 2006 4:26 am Post subject: Flaps Rubbing Top Skin Overhang?

It's probably nice to have a tight gap there.  What I did was to buy

some UHMW tape, and I applied tape to the underside of the trailing

edge of the wing skins all the way along.  That should help keep the

flaps from getting as scratches, which is common to see.



Tim Olson - RV-10 N104CD - Flying

do not archive

Sean Stephens wrote:

 	  Quote: 	
		   

 

 I temporarily attached the flaps this weekend to set neutral for aileron 

 actuation.  I noticed when bottoming out the flaps against the rear spar 

 as instructed, that the flaps (both wings) rub on the overhang of the 

 top skins.  They barely rub, but rub none the less.  Is this normal?  I 

 would hope not, as I can imagine that nice new paint would be rubbing 

 off every time flaps are used.

 

 If this is not desired/normal, any suggestions?

 

 Thanks,

 

 -Sean #40303 (about to start bottom skins)

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deruiteraircraftservices(
Guest

Posted: Mon Feb 20, 2006 5:04 am Post subject: Flaps Rubbing Top Skin Overhang?

hi all,



Teflon paint is what is used for the same purpose on airliners. It's not 

cheap, but does a wonderful job. The same paint is also useful in any other 

area's that frequently get rubbed. It is however not suitable for walkways 

as it has a very slippery surface. Among aother's AKZO Aerospace makes it. 

There's also a Boeing spec for this stuff.



Marcel

---

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Dick Sipp

Joined: 11 Jan 2006
Posts: 215
Location: Hope, MI

Posted: Mon Feb 20, 2006 6:27 am Post subject: Flaps Rubbing Top Skin Overhang?

Hi Sean,



I believe this is normal in all of the RV models, designed to be that way 

probably for better aerodynamics.



There have been several approaches to "wear" strips or other protection, 

tapes of various types as Tim mentioned applied in strips or larger areas. 

On my 4 the painter sprayed a teflon impregnated paint on the area of the 

flap that contacts the skin, it has held up well for years.  Others have 

used various types on stick on materials like the firewall heat shield 

aluminum.



Dick Sipp

RV4 N250DS RV10 40065



---

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schmoboy(at)cox.net
Guest

Posted: Mon Feb 20, 2006 6:35 am Post subject: Flaps Rubbing Top Skin Overhang?

Thanks for all the replies.



-Sean



do not archive



Richard Sipp wrote:

[quote] 



 Hi Sean,



 I believe this is normal in all of the RV models, designed to be that 

 way probably for better aerodynamics.



 There have been several approaches to "wear" strips or other 

 protection, tapes of various types as Tim mentioned applied in strips 

 or larger areas. On my 4 the painter sprayed a teflon impregnated 

 paint on the area of the flap that contacts the skin, it has held up 

 well for years.  Others have used various types on stick on materials 

 like the firewall heat shield aluminum.



 Dick Sipp

 RV4 N250DS RV10 40065



 ---

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Jerry Grimmonpre'

Joined: 09 Jan 2006
Posts: 144
Location: Huntley, Illinois 60142

Posted: Mon Feb 20, 2006 9:57 am Post subject: Flaps Rubbing Top Skin Overhang?

Do Not Archive 

Tim ...

What is this UHMW tape you refer to and where to get it?

Thanks,

Jerry Grimmonpre'

RV8A



 	  Quote: 	
		   

 

 It's probably nice to have a tight gap there.  What I did was to buy

 some UHMW tape, and I applied tape to the underside of the trailing

 edge of the wing skins all the way along.  That should help keep the

 flaps from getting as scratches, which is common to see.

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Tim(at)MyRV10.com
Guest

Posted: Mon Feb 20, 2006 10:17 am Post subject: Flaps Rubbing Top Skin Overhang?

Check this link:



http://www.vansaircraft.com/cgi-bin/catalog.cgi?ident=1140459300-156-660&browse=misc&product=uhmwtape



Description

This UHMW tape replaces the stainless steel tape previously used between 

the flap and the top wing skin to protect against scratches in the paint 

and even corrosion if the scrapes are neglected. Use this tape to 

protect leading edge of flap, canopy rails, etc., from scuffing. 3" X 

10', or the 3" X 14' adhesive strip is enough to cover both flaps, 

depending on model.



CLEAR UHMW TAPE 4/6/7/8

Part Number = TAPE UHMW 3"X10'

Price = $11.00



CLEAR UHMW TAPE 9/9A

Part Number = TAPE UHMW 3"X14'

Price = $14.50

Jerry Grimmonpre wrote:

 	  Quote: 	
		   

 

 Do Not Archive Tim ...

 What is this UHMW tape you refer to and where to get it?

 Thanks,

 Jerry Grimmonpre'

 RV8A

 

 

 

> 

>

> It's probably nice to have a tight gap there.  What I did was to buy

> some UHMW tape, and I applied tape to the underside of the trailing

> edge of the wing skins all the way along.  That should help keep the

> flaps from getting as scratches, which is common to see.

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jesse(at)itecusa.org
Guest

Posted: Mon Feb 20, 2006 5:43 pm Post subject: Flaps Rubbing Top Skin Overhang?

We put the UHMV on the top of the flap and that took care of it.



Jesse Saint

I-TEC, Inc.

jesse(at)itecusa.org

www.itecusa.org

Fax: 815-377-3694

 

I am in Ecuador until May, 2006.  If you have questions regarding I-TEC,

please call the office at 352-465-4545.  If you would like to talk to me,

please call me at 352-505-1899.  This number won't always be on, but it has

voicemail that will get to me in Ecuador.



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