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gas cap venting

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Malcolmbru(at)AOL.COM
Guest

Posted: Tue May 22, 2007 6:43 pm Post subject: gas cap venting

my new gas cap came today.  it is the same brand Eaton  with the same type of  s steal  vent tube welded to it , but the  new one is drilled all the way threw the cap and welded from the inside as well,    then the old vent holes on the inside are welded shut it is much  easer to blow thru the new one.   my old cap's are welded from the top  only they aren't drilled all the way threw and the bottom is left alone.

      I am a little worried about gas spilling out the  gas cap vent of the new cap  my old one has never leaked  

      Last week I flew for 1 11/2 hr and  the left tank went dry. the other  tank had air bubbles in the  hose and I could see air bubbles  on the header tank  vent  line running up and down the hose I was kind of worried  about running out of gas.      mal    KF11



See what's free at AOL.com. 

  [quote][b]

Fox5flyer
Guest

Posted: Wed May 23, 2007 2:21 am Post subject: gas cap venting

Mal, it sounds as if you may be getting uneven pressures on the two  caps.  Did you replace both of them?  Also, check the seals.   It's important that both are sealed equally or you'll get a  pressure imbalance which will cause fuel to push from one side to the  other.

 Deke Morisse

N148DM

S5/Soob/CAP

NE Michigan



 [quote]   ---

msm_9949(at)yahoo.com
Guest

Posted: Wed May 23, 2007 7:38 am Post subject: gas cap venting

Mal -

   

  My caps are the same type as your "old " caps. I had similar problems with them: one I could blow through (barely) and the other seemed to be completely plugged. I drilled 3/16" holes on the bottom center of each, apparently like the one you describe in your "new" cap. Now I can easily blow through both of them. (It's part of pre-flight ck list). 

   

  I also replaced seals as Deke suggested (with Mercedes-Benz gas cap seals) Now caps vent just fine, both tanks flow and, after 60 hours, no leaks.



Malcolmbru(at)aol.com wrote:

  [quote]       my new gas cap came today.  it is the same brand Eaton with the same type of  s  steal  vent tube welded to it , but the new one is drilled all the way threw the cap and welded from the inside as well,   then the old vent holes on the inside are welded shut it is much easer to blow thru the new one.   my old cap's are welded from the top only they aren't drilled all the way threw and the bottom is left alone.

       I am a little worried about gas spilling out the gas cap vent of the new cap  my old one has never leaked  

       Last week I flew for 1 11/2 hr and the left tank went dry. the other  tank had air bubbles in the hose and I could see air bubbles  on the header tank vent  line running up and down the hose I was kind of worried about running out of gas.      mal   KF11



    Need a vacation? [url=http://us.rd.yahoo.com/evt=48256/*http://travel.yahoo.com/;_ylc=X3oDMTFhN2hucjlpBF9TAzk3NDA3NTg5BHBvcwM1BHNlYwNncm91cHMEc2xrA2VtYWlsLW5jbQ--]Get great deals  to amazing places [/url]on Yahoo! Travel.  [quote][b]

Guy Buchanan

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

Posted: Wed May 23, 2007 8:11 am Post subject: gas cap venting

At 07:42 PM 5/22/2007, you wrote:

 	  Quote: 	
		        I am a little worried about gas spilling out the gas cap vent 

 of the new cap  my old one has never leaked


	


         I believe I have the same caps with the same problem. When 

Skystar welded the caps it appears they welded the steel tube to the 

outer cap and to the spring plate inside. They also welded the inside 

vent holes. I believe fuel is migrating between the spring plate and 

cap inner surface and thence into the cap interior and out the rim 

vent holes. (I don't think the spring plate weld penetrated to the 

cap inner surface.) It's a very slow leak, but consistent. When I 

remove the caps I can shake out fuel.

         Others have told me they have filled their caps with resin, 

or at least plugged the rim vent holes to prevent this leak path. I 

will try the resin trick.

Guy Buchanan

San Diego, CA

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

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

Lynn Matteson

Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

Posted: Wed May 23, 2007 8:12 am Post subject: gas cap venting

Speaking of the Mercedes-Benz seals/gaskets, are they rubber (or  

Neoprene), and as such, do they fit over the cap locking tabs easily?  

The gaskets on my caps are stiff, like some kind of very heavy paper,  

and I would not want to try to remove them with thoughts of saving  

them. If the M-B gaskets are the same, stiff paper-like gaskets, I'll  

stick with what I've got. If the M-B gaskets are rubbery, I may look  

into getting some.



Lynn Matteson

Grass Lake, Michigan

Kitfox IV Speedster  w/Jabiru 2200

flying w/293+ hrs



On May 23, 2007, at 11:38 AM, Marco Menezes wrote:



 	  Quote: 	
		   Mal -



 My caps are the same type as your "old " caps. I had similar  

 problems with them: one I could blow through (barely) and the other  

 seemed to be completely plugged. I drilled 3/16" holes on the  

 bottom center of each, apparently like the one you describe in your  

 "new" cap. Now I can easily blow through both of them. (It's part  

 of pre-flight ck list).



 I also replaced seals as Deke suggested (with Mercedes-Benz gas cap  

 seals) Now caps vent just fine, both tanks flow and, after 60  

 hours, no leaks.



 Malcolmbru(at)aol.com wrote:

    my new gas cap came today.  it is the same brand Eaton with the  

 same type of  s steal  vent tube welded to it , but the new one is  

 drilled all the way threw the cap and welded from the inside as  

 well,   then the old vent holes on the inside are welded shut it is  

 much easer to blow thru the new one.   my old cap's are welded from  

 the top only they aren't drilled all the way threw and the bottom  

 is left alone.

      I am a little worried about gas spilling out the gas cap vent  

 of the new cap  my old one has never leaked

      Last week I flew for 1 11/2 hr and the left tank went dry. the  

 other  tank had air bubbles in the hose and I could see air  

 bubbles  on the header tank vent  line running up and down the hose  

 I was kind of worried about running out of gas.      mal   KF11



 Need a vacation? Get great deals to amazing places on Yahoo!  

 Travel. _- 

 www.matronics.com/Navigator?Kitfox-List _- 

 ============================================================

_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM

smokey_bear_40220(at)yaho
Guest

Posted: Wed May 23, 2007 8:36 am Post subject: gas cap venting

I had the same leaky gasket/fuel transfer problem on

the second leg of my first x-country.  Did an

emergency fix buy buying some of that orange rubber

gasket sheet from an auto store and cutting my own. 

It was a little thick, but you can adjust the tabs for

that.



But I would like to know about the M-B gaskets too. 

Always open to something better.



kurt S.

S-5/NSI turbo

Florida and panama



--- Lynn Matteson <lynnmatt(at)jps.net> wrote:



 	  Quote: 	
		   Speaking of the Mercedes-Benz seals/gaskets, are

 they rubber (or  

 Neoprene), and as such, do they fit over the cap

 locking tabs easily?


	




       

Check out fitting gifts for grads at Yahoo! Search

http://search.yahoo.com/search?fr=oni_on_mail&p=graduation+gifts&cs=bz

rjdaugh

Joined: 30 Aug 2006
Posts: 195

Posted: Wed May 23, 2007 9:05 am Post subject: gas cap venting

Lynn,

They are a blue rubber.  Very flexible.  



You are right, the paper ones are unusable after removing.



Randy



.           



--

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

lcfitt(at)sbcglobal.net
Guest

Posted: Wed May 23, 2007 11:37 am Post subject: gas cap venting

Quoting from an earlier post from Ben B.



Guys the Mercedes Fuel cap gasket is P/N 140-471-00-79 Also under

E2060-124896 It is listed as a hard seal 58x37.5x2.5.



A google search on the E2060- 124896 number gives some sources.



Lowell



---

msm_9949(at)yahoo.com
Guest

Posted: Wed May 23, 2007 12:00 pm Post subject: gas cap venting

Lynn,

   

  The M-B gaskets are rubber, pliable and thicker than the stiff paper type that come with the cap. I ordered them on-line from some imported car parts house, about $6 each. I had the p/n but can't locate it now check the archives.

   

  

Lynn Matteson <lynnmatt(at)jps.net> wrote:

  [quote]--> Kitfox-List message posted by: Lynn Matteson 



Speaking of the Mercedes-Benz seals/gaskets, are they rubber (or 

Neoprene), and as such, do they fit over the cap locking tabs easily? 

The gaskets on my caps are stiff, like some kind of very heavy paper, 

and I would not want to try to remove them with thoughts of saving 

them. If the M-B gaskets are the same, stiff paper-like gaskets, I'll 

stick with what I've got. If the M-B gaskets are rubbery, I may look  

into getting some.



Lynn Matteson

Grass Lake, Michigan

Kitfox IV Speedster w/Jabiru 2200

flying w/293+ hrs



On May 23, 2007, at 11:38 AM, Marco Menezes wrote:



[quote] Mal -



 My caps are the same type as your "old " caps. I had similar 

 problems with them: one I could blow through (barely) and the other 

 seemed to be completely plugged. I drilled 3/16" holes on the 

 bottom center of each, apparently like the one you describe in your 

 "new" cap. Now I can easily blow through both of them. (It's part 

 of pre-flight ck list).



 I also replaced seals as Deke suggested (with Mercedes-Benz gas cap 

 seals) Now caps vent just fine, both tanks flow and, after 60 

 hours, no leaks.



 Malcolmbru(at)aol.com wrote:

 my new gas cap came today. it is the same brand Eaton with the 

 same type of s steal vent tube welded to it , but the new one is  

 drilled all the way threw the cap and welded from the inside as 

 well, then the old vent holes on the inside are welded shut it is 

 much easer to blow thru the new one. my old cap's are welded from 

 the top only they aren't drilled all the way threw and the bottom 

 is left alone.

 I am a little worried about gas spilling out the gas cap vent 

 of the new cap my old one has never leaked

 Last week I flew for 1 11/2 hr and the left tank went dry. the 

 other tank had air bubbles in the hose and I could see air 

 bubbles on the header tank vent line running up and down the hose 

 I was kind of worried about running out of gas. mal KF11



 Need a vacation? Get great deals to amazing places on Yahoo! 

 Travel. _- 

 www.matronics.com/Navigator?Kitfox-List _- 

       Shape Yahoo! in your own image.   Join our Network Research Panel today!  http://us.rd.yahoo.com/evt=48517/*http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7   hot CTA = Join our Network Research Panel [quote][b]

jdmcbean(at)kitfoxaircraf
Guest

Posted: Wed May 23, 2007 12:19 pm Post subject: gas cap venting

We have the rubber type gaskets in stock.



Fly Safe !!

John & Debra McBean

208.337.5111

www.kitfoxaircraft.com

"It's not how Fast... It's how Fun!"



--

Lynn Matteson

Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

Posted: Wed May 23, 2007 5:01 pm Post subject: gas cap venting

Sounds much easier/better to order from you John, than going to the  

"furrin car" places...I'll be ordering a pair.



Lynn Matteson

Grass Lake, Michigan

Kitfox IV Speedster  w/Jabiru 2200

flying w/293+ hrs

do not archive



On May 23, 2007, at 4:19 PM, jdmcbean wrote:



[quote] 

 <jdmcbean(at)kitfoxaircraft.com>



 We have the rubber type gaskets in stock.



 Fly Safe !!

 John & Debra McBean

 208.337.5111

 www.kitfoxaircraft.com

 "It's not how Fast... It's how Fun!"



 --

_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Fri May 25, 2007 5:03 am Post subject: gas cap venting

I had a fibre gasket on the generic gas cap I  converted last year.  I removed the one way valve in the top of the cap  completely, drilled a hole (5/16") in the centre of the cap and soldered a  chrome plated copper tube with the end flared into the hole.  Then I put  the cap on the plane and marked forward so I could bend the tube into the  airflow.



I didn't like the fibre gasket either so I cut it and removed  it.  I then used it as a template to cut another gasket out of an old inner  tube.  Works perfectly!  Total cost was about $8.00CDN ( Gas caps are  a bit dear here ).  Oh yes one other thing I'm one of those guys who fly  over some rough country so generally unless I'm just up for a few trips around  the pond my tanks will be filled to the gunwales.  The only leak I ever saw  was with the fibre gasket.



 

[img]cid:336510213(at)25052007-0CD3[/img]  

 Noel Loveys, RPP, AME intern

 Campbellton, Newfoundland, 

 Canada

 Kitfox Mod III-A, 582, B box, Ivo IFA

 Aerocet 1100s

 noelloveys(at)yahoo.ca (noelloveys(at)yahoo.ca)

 

 

 

 

 

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Noel Loveys
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Aerocet 1100 Floats

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