Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Fuel tank leaks

Matronics Email Lists Forum Index -> RV10-List

View previous topic :: View next topic

Author Message

speckter(at)comcast.net
Guest

Posted: Wed Aug 05, 2009 7:47 am Post subject: Fuel tank leaks

I saw several aircraft at OSH with fuel leaks and I have a very small one on

mine too.  After studying the issue, I think that the problem for some of

the tanks that test solid at first and then develop leaks later is that most

people put the wing walk non skid too far forward (myself included).  There

are no extra ribs in the fuel tank like there is in the wing itself.  Thus

it will flex more if stepped on.  Thus causing leaks.



I mentioned this to Ken Kreuger and he had also come to this conclusion.  I

think that the long term solution is to add a few extra ribs in the tank to

take up the stress as it is very difficult not to step on the forward part

of the wing while helping folks into the rear seat if it is their first

ride.  Also one could label the tank as a non step area.



Thoughts on this?



Gary Specketer

40274

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

ricksked(at)embarqmail.co
Guest

Posted: Wed Aug 05, 2009 9:43 am Post subject: Fuel tank leaks

I did not put the wing walk forward on the tank because it invites feet...Is this leaking mainly on the QB's?



Rick Sked



---

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

gengrumpy(at)aol.com
Guest

Posted: Wed Aug 05, 2009 9:49 am Post subject: Fuel tank leaks

So far no problem with mine, and there is wing walk on them.



grumpy

N184JM



100+ hours and 2 yrs



do not archive



On Aug 5, 2009, at 12:39 PM, ricksked(at)embarqmail.com wrote:



[quote] 



 I did not put the wing walk forward on the tank because it invites  

 feet...Is this leaking mainly on the QB's?



 Rick Sked



 ---

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

dlm46007(at)cox.net
Guest

Posted: Wed Aug 05, 2009 9:52 am Post subject: Fuel tank leaks

My QBs were done 3/2005 and we never stand on the tanks; no leaks at 190 TT.

--

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

jkreidler

Joined: 13 Feb 2008
Posts: 151
Location: Sheboygan Falls WI

Posted: Wed Aug 05, 2009 3:59 pm Post subject: Re: Fuel tank leaks

Gary, you are right on.  I can't say for sure, but it seems to me that the majority of the leaking rivets are the end rivets that hold the T1011 Tank Stiffeners on the top inboard tank skin.  This would make sense as this is where the stress concentration would be if the tank were stepped on.  These stiffeners do not tie into the ribs, if they did, the problem MIGHT go away.  While we did not use the tank as a step I can not confirm that it was never stood on during construction, I know it was sat on.  If I were standing on it I could tell you how many foot pounds of force it saw, two, the units for measuring the force exerted by sitting must be different.  Any takers??



Not standing or sitting, or placing anything heavy on the tank may very well save builders from this rather annoying problem.



Just my engineering opinion.



Jason Kreidler

N44YH - Flying - #40617

4 Partner Build - Sheboygan Falls, WI

Wayne Elsner, Kyle Hokel, Tony Kolar, Jason Kreidler

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

Display posts from previous:

	Matronics Email Lists Forum Index -> RV10-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum