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Fuel Valve Problem
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sam(at)fr8dog.net
Guest

Posted: Thu Oct 25, 2007 7:00 am Post subject: Fuel Valve Problem

I've discovered that when the fuel is off, the engine can be started 

taxied and a runup completed, with the fuel selector in the off position.

Another nice surprise I discovered, is when the tanks are topped off, 

fuel will transfer from one wing to the other, and pump precious fuel 

overboard through the vent line, but only on the ground, I think, at 

least so far. Has anyone else experienced this?

Thanks,

Sam Marlow

#40157

Van's standard kit.

LloydDR(at)wernerco.com
Guest

Posted: Thu Oct 25, 2007 7:27 am Post subject: Fuel Valve Problem

If you have the fuel transfer between tanks then you have an issue with

your valve, the tanks are isolated from each other, even if you used the

standard Vans fuel valve it should not parallel the tanks and allow

cross transfer. Search the archives because there has been allot of

discussion about cross feeding the tanks for this very reason, if you

are on an angle/hill fuel will run over board through the low side tank.

I think there is a couple of builders out there that did cross feed

their tanks even though it is not recommended. 

Dan

N289DT RV10E Flying 



--

Tim Olson

Joined: 25 Jan 2007
Posts: 2881

Posted: Thu Oct 25, 2007 7:31 am Post subject: Fuel Valve Problem

Which valve do you have....that doesn't sound right or good

at all...not even a little.  With the Andair in place, mine

will die in short order once the valve is turned off, and

the wing tanks are always exactly where they were when the

last flight ended.



Tim Olson - RV-10 N104CD - Flying



Sam Marlow wrote:

 	  Quote: 	
		   

 

 I've discovered that when the fuel is off, the engine can be started 

 taxied and a runup completed, with the fuel selector in the off position.

 Another nice surprise I discovered, is when the tanks are topped off, 

 fuel will transfer from one wing to the other, and pump precious fuel 

 overboard through the vent line, but only on the ground, I think, at 

 least so far. Has anyone else experienced this?

 Thanks,

 Sam Marlow

 #40157

 Van's standard kit.

wcurtis(at)nerv10.com
Guest

Posted: Thu Oct 25, 2007 7:51 am Post subject: Fuel Valve Problem

Are we talking about a high wing Cessna or an RV-10?  With the standard fuel plumbing there should be no transfer of fuel from one tank to the other. Also, consider the length of tubing from the fuel selector to the engine; this should allow only a few seconds of fuel for the engine to run.



William

http://wcurtis.nerv10.com/ 



------

sam(at)fr8dog.net
Guest

Posted: Thu Oct 25, 2007 8:05 am Post subject: Fuel Valve Problem

I have the Van's standard valve, V407P-4.....

The aircraft is grounded untill I get this sorted out. I have talked to 

Gus at Van's, and he said this is the first he's heard of a problem with 

the valve. But that's what I here every time I contact them about any 

problem!

Tim Olson wrote:

 	  Quote: 	
		   



 Which valve do you have....that doesn't sound right or good

 at all...not even a little.  With the Andair in place, mine

 will die in short order once the valve is turned off, and

 the wing tanks are always exactly where they were when the

 last flight ended.



 Tim Olson - RV-10 N104CD - Flying



 Sam Marlow wrote:

> 

>

> I've discovered that when the fuel is off, the engine can be started 

> taxied and a runup completed, with the fuel selector in the off 

> position.

> Another nice surprise I discovered, is when the tanks are topped off, 

> fuel will transfer from one wing to the other, and pump precious fuel 

> overboard through the vent line, but only on the ground, I think, at 

> least so far. Has anyone else experienced this?

> Thanks,

> Sam Marlow

> #40157

> Van's standard kit.

>

sam(at)fr8dog.net
Guest

Posted: Thu Oct 25, 2007 8:35 am Post subject: Fuel Valve Problem

RV-10, of course. I'm well aware of the way the system works, I built it, but I'm trying to get the word out, there's a fuel transfer problem that's going to get someone hurt if it's not fixed. I've ordered a new valve from the factory, not Van's, but until it's installed, MY RV10 IS GROUNDED! There's no way enough fuel can be in the lines, on a stock built RV10 airframe to run the engine for 10 minuets.

 I contacted the factory, talked to Guss, but he just insults me with redundant silly questions. I'm just the stupid pilot, builder, what do I know about airplanes.

 Sorry to dump on you William, I'm just frustrated with support from Van's. I feel it's my responsibly to alert the RV10 builders of this potential lethal problem, even if Van's won't!

 Sam

 

 William Curtis wrote: [quote]   [quote]--> RV10-List message posted by: "William Curtis" <wcurtis(at)nerv10.com> (wcurtis(at)nerv10.com)  Are we talking about a high wing Cessna or an RV-10?  With the standard fuel plumbing there should be no transfer of fuel from one tank to the other. Also, consider the length of tubing from the fuel selector to the engine; this should allow only a few seconds of fuel for the engine to run.  William http://wcurtis.nerv10.com/   ------

Tim Olson

Joined: 25 Jan 2007
Posts: 2881

Posted: Thu Oct 25, 2007 9:04 am Post subject: Fuel Valve Problem

Once you get a new valve in there, disect the old one and

let us know what you find.  It'll be interesting if it's

a valve-related issue with a seal or something like that.

Could prove valuable knowledge for maintenance later for

some people.

Tim Olson - RV-10 N104CD - Flying

do not archive

Sam Marlow wrote:

[quote] RV-10, of course. I'm well aware of the way the system works, I built 

 it, but I'm trying to get the word out, there's a fuel transfer problem 

 that's going to get someone hurt if it's not fixed. I've ordered a new 

 valve from the factory, not Van's, but until it's installed, MY RV10 IS 

 GROUNDED! There's no way enough fuel can be in the lines, on a stock 

 built RV10 airframe to run the engine for 10 minuets.

 I contacted the factory, talked to Guss, but he just insults me with 

 redundant silly questions. I'm just the stupid pilot, builder, what do I 

 know about airplanes.

 Sorry to dump on you William, I'm just frustrated with support from 

 Van's. I feel it's my responsibly to alert the RV10 builders of this 

 potential lethal problem, even if Van's won't!

 Sam

 William Curtis wrote:

> 

>

> Are we talking about a high wing Cessna or an RV-10?  With the standard fuel plumbing there should be no transfer of fuel from one tank to the other. Also, consider the length of tubing from the fuel selector to the engine; this should allow only a few seconds of fuel for the engine to run.

>

> William

> http://wcurtis.nerv10.com/ 

>

> ------

sam(at)fr8dog.net
Guest

Posted: Thu Oct 25, 2007 9:18 am Post subject: Fuel Valve Problem

I'll do that, thanks Tim.

 

 

 Tim Olson wrote: [quote]--> RV10-List message posted by: Tim Olson <Tim(at)MyRV10.com> (Tim(at)MyRV10.com)   

   

 Once you get a new valve in there, disect the old one and   

 let us know what you find.  It'll be interesting if it's   

 a valve-related issue with a seal or something like that.   

 Could prove valuable knowledge for maintenance later for   

 some people.   

   

 Tim Olson - RV-10 N104CD - Flying   

 do not archive   

   

   

 Sam Marlow wrote:   

   [quote]RV-10, of course. I'm well aware of the way the system works, I built it, but I'm trying to get the word out, there's a fuel transfer problem that's going to get someone hurt if it's not fixed. I've ordered a new valve from the factory, not Van's, but until it's installed, MY RV10 IS GROUNDED! There's no way enough fuel can be in the lines, on a stock built RV10 airframe to run the engine for 10 minuets.     

 I contacted the factory, talked to Guss, but he just insults me with redundant silly questions. I'm just the stupid pilot, builder, what do I know about airplanes.     

 Sorry to dump on you William, I'm just frustrated with support from Van's. I feel it's my responsibly to alert the RV10 builders of this potential lethal problem, even if Van's won't!     

 Sam     

     

 William Curtis wrote:     

     [quote]--> RV10-List message posted by: "William Curtis" <wcurtis(at)nerv10.com> (wcurtis(at)nerv10.com)       

       

 Are we talking about a high wing Cessna or an RV-10?  With the standard fuel plumbing there should be no transfer of fuel from one tank to the other. Also, consider the length of tubing from the fuel selector to the engine; this should allow only a few seconds of fuel for the engine to run.       

       

 William       

 http://wcurtis.nerv10.com/ 

 ------

wcurtis(at)nerv10.com
Guest

Posted: Thu Oct 25, 2007 10:41 am Post subject: Fuel Valve Problem

Sam,



Not a problem, that question was posed with tongue planted firmly in cheek:-)

Do not archive.



William

http://wcurtis.nerv10.com/ 



------

n8zg(at)bellsouth.net
Guest

Posted: Thu Oct 25, 2007 12:34 pm Post subject: Fuel Valve Problem

Sam - 



Yank that valve and throw it under your bench.

It will make a very nice spider habitat.



Get yourself an Andair FS20X7-T. 



Neal



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




I have the Van's standard valve, V407P-4.....

MauleDriver(at)nc.rr.com
Guest

Posted: Thu Oct 25, 2007 1:34 pm Post subject: Fuel Valve Problem

For reference, minutes ago, I placed an order for an Andair EFS20B7-T.  

It has the 2 90deg elbows oriented downwards so the  valve fits within 

the width of the tunnel and an extension so the SCAT can go over the 

valve. 



Thanks to all for the help.



Neal George wrote:

 	  Quote: 	
		   



 Sam - 



 Yank that valve and throw it under your bench.

 It will make a very nice spider habitat.



 Get yourself an Andair FS20X7-T. 



 Neal



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

 



 I have the Van's standard valve, V407P-4.....

coop85(at)cableone.net
Guest

Posted: Thu Oct 25, 2007 1:35 pm Post subject: Fuel Valve Problem

That brings up a good question.  Has anyone done the standard to Andair fuel

valve conversion with a finished airplane?   I've thought about doing it but

wonder what might be involved in changing the plumbing around.



Different note for Sam, I found if my machine is topped off I'll vent some

fuel so I always stop about 1" from a full top-off.  Fuel transferring from

one side to another is the sign of a big problem in my opinion.



Marcus



--

VHMUM(at)bigpond.com
Guest

Posted: Thu Oct 25, 2007 2:26 pm Post subject: Fuel Valve Problem

Sam just wondering did all the basic tests , did you test your fuel selecter 

for correct fuel flows etc. I mean fill one tank then time the fuel flow 

switch to the other nothing shoud come out? Off position  , nothing comes 

out.Empty the tank repeat other side?

Time the fuel flows. Just wondering if its just your valve only. I didnt 

want to go a spend more money if not needed. I am not at the point were I 

can test the valve.

I am probably missing something as usual so feel free to point me in the 

right direction



regards Chris



---

AV8ORJWC

Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"

Posted: Thu Oct 25, 2007 3:54 pm Post subject: Fuel Valve Problem

Sam, you are the kind of pilot we should all strive to emulate.  Fuel Shutoff is exactly that.  Good luck returning safely to the air soon.  

   

John Cox  

#40600  

         

  

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Sam Marlow

 Sent: Thursday, October 25, 2007 9:35 AM

 To: rv10-list(at)matronics.com

 Subject: Re: Fuel Valve Problem  

  

   

RV-10, of course. I'm well aware of the way the system works, I built it, but I'm trying to get the word out, there's a fuel transfer problem that's going to get someone hurt if it's not fixed. I've ordered a new valve from the factory, not Van's, but until it's installed, MY RV10 IS GROUNDED! There's no way enough fuel can be in the lines, on a stock built RV10 airframe to run the engine for 10 minuets.

 I contacted the factory, talked to Guss, but he just insults me with redundant silly questions. I'm just the stupid pilot, builder, what do I know about airplanes.

 Sorry to dump on you William, I'm just frustrated with support from Van's. I feel it's my responsibly to alert the RV10 builders of this potential lethal problem, even if Van's won't!

 Sam

 

 William Curtis wrote:   [quote]--> RV10-List message posted by: "William Curtis" <wcurtis(at)nerv10.com> Are we talking about a high wing Cessna or an RV-10?  With the standard fuel plumbing there should be no transfer of fuel from one tank to the other. Also, consider the length of tubing from the fuel selector to the engine; this should allow only a few seconds of fuel for the engine to run. Williamhttp://wcurtis.nerv10.com/  ------

sam(at)fr8dog.net
Guest

Posted: Thu Oct 25, 2007 5:02 pm Post subject: Fuel Valve Problem

Thanks again, this list has been very gracious.

 Sam

 

 William Curtis wrote: [quote]   [quote]--> RV10-List message posted by: "William Curtis" <wcurtis(at)nerv10.com> (wcurtis(at)nerv10.com)  Sam,  Not a problem, that question was posed with tongue planted firmly in cheek:-) Do not archive.  William http://wcurtis.nerv10.com/   ------

sam(at)fr8dog.net
Guest

Posted: Thu Oct 25, 2007 5:07 pm Post subject: Fuel Valve Problem

I may end up doing just that, but in all fairness, I have to give Van's 

a chance to make it right.



Neal George wrote:

 	  Quote: 	
		   



 Sam - 



 Yank that valve and throw it under your bench.

 It will make a very nice spider habitat.



 Get yourself an Andair FS20X7-T. 



 Neal



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

 



 I have the Van's standard valve, V407P-4.....

bob.kaufmann(at)cox.net
Guest

Posted: Thu Oct 25, 2007 5:13 pm Post subject: Fuel Valve Problem

Not that far along but did you expect anything less from Van’s.  It’s not a Lycoming so no help from the factory, and wish that I was that far along.  Bob K  

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Sam Marlow

 Sent: Thursday, October 25, 2007 5:02 PM

 To: rv10-list(at)matronics.com

 Subject: Re: Fuel Valve Problem  

Thanks again, this list has been very gracious.

 Sam

 William Curtis wrote:   [quote]--> RV10-List message posted by: "William Curtis" <wcurtis(at)nerv10.com> Sam, Not a problem, that question was posed with tongue planted firmly in cheek:-)Do not archive. Williamhttp://wcurtis.nerv10.com/  ------

sam(at)fr8dog.net
Guest

Posted: Thu Oct 25, 2007 5:17 pm Post subject: Fuel Valve Problem

Not exactly to that extent, but I did use compressed air to verify 

integrity of the valve.



Chris and Susie McGough wrote:

[quote] 

 <VHMUM(at)bigpond.com>



 Sam just wondering did all the basic tests , did you test your fuel 

 selecter for correct fuel flows etc. I mean fill one tank then time 

 the fuel flow switch to the other nothing shoud come out? Off 

 position  , nothing comes out.Empty the tank repeat other side?

 Time the fuel flows. Just wondering if its just your valve only. I 

 didnt want to go a spend more money if not needed. I am not at the 

 point were I can test the valve.

 I am probably missing something as usual so feel free to point me in 

 the right direction



 regards Chris



 ---

sam(at)fr8dog.net
Guest

Posted: Thu Oct 25, 2007 5:19 pm Post subject: Fuel Valve Problem

Thank's John, I'll get to the bottom of of it yet.

You guy's are great, that's the reason I'm on this fourm, so we all can 

learn and stay safe!



John W. Cox wrote:

[quote]

 Sam, you are the kind of pilot we should all strive to emulate.  Fuel 

 Shutoff is exactly that.  Good luck returning safely to the air soon.



  



 John Cox



 #40600



  



 ------------------------------------------------------------------------



 *From:* owner-rv10-list-server(at)matronics.com 

 [mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *Sam Marlow

 *Sent:* Thursday, October 25, 2007 9:35 AM

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

 *Subject:* Re: Fuel Valve Problem



  



 RV-10, of course. I'm well aware of the way the system works, I built 

 it, but I'm trying to get the word out, there's a fuel transfer 

 problem that's going to get someone hurt if it's not fixed. I've 

 ordered a new valve from the factory, not Van's, but until it's 

 installed, MY RV10 IS GROUNDED! There's no way enough fuel can be in 

 the lines, on a stock built RV10 airframe to run the engine for 10 

 minuets.

 I contacted the factory, talked to Guss, but he just insults me with 

 redundant silly questions. I'm just the stupid pilot, builder, what do 

 I know about airplanes.

 Sorry to dump on you William, I'm just frustrated with support from 

 Van's. I feel it's my responsibly to alert the RV10 builders of this 

 potential lethal problem, even if Van's won't!

 Sam



 William Curtis wrote:



 

  

 Are we talking about a high wing Cessna or an RV-10?  With the standard fuel plumbing there should be no transfer of fuel from one tank to the other. Also, consider the length of tubing from the fuel selector to the engine; this should allow only a few seconds of fuel for the engine to run.

  

 William

 http://wcurtis.nerv10.com/ 

  

 ------

VHMUM(at)bigpond.com
Guest

Posted: Thu Oct 25, 2007 5:42 pm Post subject: Fuel Valve Problem

Sam would you think this might help to verify the source of the problem if 

you did it.



regards Chris



---

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