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on fuel caps --what about fairings?

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dave(at)cfisher.com
Guest

Posted: Tue Sep 12, 2006 3:54 am Post subject: on fuel caps --what about fairings?

Seeing that you on topic of fuel caps.  Has anyone done any streamlining of 

the fuel caps and did they even notice an increase in cruise ?



Dave



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dosmythe(at)cox.net
Guest

Posted: Tue Sep 12, 2006 4:35 am Post subject: on fuel caps --what about fairings?

I can't speak of speed since mine were installed from the start.  The 

recessed caps I used (Marine) actually sit about 1/4" high above the tank 

top.  I faired them into the tank top keeping the round shape and out about 

8 inches.  So, I have a small bubble sitting up a bit.  I have noticed the 

fabric pulling loose in a couple places on that bubble due to the airflow 

over them.  Lots of suction in that area.



Don Smythe

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occom

Joined: 26 Aug 2006
Posts: 404

Posted: Tue Sep 12, 2006 4:58 am Post subject: on fuel caps --what about fairings?

 	  Quote: 	
		   



 Seeing that you on topic of fuel caps.  Has anyone done any streamlining 

 of the fuel caps and did they even notice an increase in cruise ?



 Dave




	


I noticed on one of the sites that was posted the other day that there are 

fairings available to put behind the gas caps. I don't know what effect they 

would have. Does anyone use them?

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Fox5flyer
Guest

Posted: Tue Sep 12, 2006 6:39 am Post subject: on fuel caps --what about fairings?

Dave, I faired mine in both front and back sides.  Previously I'd placed

small drops of oil randomly on the wing behind the caps to see what they

would look like after flying.  What I found was that the caps disturbed the

flow enough that from the rear of the cap to the trailing was turbulent air

that wedged out to about 18" wide at the trailing edge.  I thought that was

good enough reason to fair them in.  It was a slow winter anyway.

Photos on Sportflight.com, our Kitfox Photo Archive hosted by Don Pearsall.

Browse around while you're in there.

Deke

http://www.sportflight.com/cgi-bin/uploader.pl?action=view&epoch=1007426364



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rjdaugh

Joined: 30 Aug 2006
Posts: 195

Posted: Tue Sep 12, 2006 9:05 am Post subject: on fuel caps --what about fairings?

Dave,

I faired mine too.  Probably learned from Don.  I have pictures at:

http://www.sportflight.com/cgi-bin/uploader.pl?action=view&epoch=1151042132

I shaped mine a little differently than Don's.



I have heard statements that with out the fairing you effectively lose about

2' of wing.  I don't know.  I did mine during construction.



Randy



.           



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_________________
Randy
Kitfox 5/7 912S
Black Hills, South Dakota

smokey_bear_40220(at)yaho
Guest

Posted: Tue Sep 12, 2006 9:43 am Post subject: on fuel caps --what about fairings?

I bought a pair of large Piper Cub pully covers from

ACS.  They are cheap, lightweight plastic and seem to

fit over the caps, but I haven't had time to mount

them yet.  Too many things to do on my list....



But if these work, they are a quick, cheap solution. 

Anyone else can try them and not lose much of they

don't work out for you.



Kurt S.



--- "Dave G." <occom(at)ns.sympatico.ca> wrote:



 	  Quote: 	
		   

 <occom(at)ns.sympatico.ca>


	


 	  Quote: 	
		   > Seeing that you on topic of fuel caps.  Has anyone

 done any streamlining 

 > of the fuel caps and did they even notice an

 increase in cruise ?

 >

 > Dave


	


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Guy Buchanan

Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA

Posted: Tue Sep 12, 2006 12:58 pm Post subject: on fuel caps --what about fairings?

At 07:39 AM 9/12/2006, you wrote:

 	  Quote: 	
		  Dave, I faired mine in both front and back sides.


	


Love the fairings but what I want to know is, howinaheck do ya get the caps 

off? I have to use my whole hand to get mine off. (Kinda stiff.)

Guy Buchanan

K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.

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_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too.

Fox5flyer
Guest

Posted: Tue Sep 12, 2006 1:18 pm Post subject: on fuel caps --what about fairings?

Just use the pitot tubes.  They're plenty strong.  Just keep a little lube

on the gasket.

Deke



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