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  #1  
Old 10-29-2011, 04:49 AM
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Geico266 Geico266 is offline
 
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Location: Huskerland, USA
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Default RV-10: Fuel Smell When Turning

This has been happening for as long as I have had the plane. Seems to happen when I am turning sharp like pattern work. There is a moderate smell of fuel. Sometimes when decending rapidly.

Is the fuel coming from the overflow vents and he fumes come back in though the tail area? That does not make sense as the cabin should be pressurized, but maybe turning creates negative pressure? No leaks that I can find in the cabin tunnel, wing root.

Just looking for others wih the same observation or tips on how to cure.

Any thoughts?
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Last edited by Geico266 : 10-29-2011 at 04:53 AM.
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  #2  
Old 10-29-2011, 08:32 AM
TS Flightlines TS Flightlines is offline
 
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Location: Ridgeland, SC
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Question This is interesting--

I assume that this -10 has plans build vents? I wonder if somehow the fumes are collecting in the lower panels through the spar hole, or the flap rod hole, and settling in the cabin? The reason for my question is that if seems that several -10s have this issue.
Any thoughts from the 10 guys?
Tom
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  #3  
Old 10-29-2011, 08:45 AM
Wayne Gillispie Wayne Gillispie is offline
 
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Location: USA
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Seal off around vent/snap bushing with proseal. Seal off spar openings. Install aileron pushrod boot.

When you are turning the vent line fills with fuel on the lowered wing side. When leveling off it empties due to dihedral/gravity. Positive pres underneath and neg pres on top allows fuel to enter either at vent tube or aft end of lower fairing.

That is my best guess for now. Keep us posted what works.
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  #4  
Old 10-29-2011, 09:33 AM
diamond diamond is offline
 
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Location: Rochester, MN
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How quickly does the smell come on when you turn and how quickly does it go away when you level off?
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  #5  
Old 10-29-2011, 02:10 PM
TSwezey TSwezey is offline
 
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Location: Savannah, GA
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Quote:
Originally Posted by Geico266 View Post
This has been happening for as long as I have had the plane. Seems to happen when I am turning sharp like pattern work. There is a moderate smell of fuel. Sometimes when decending rapidly.

Is the fuel coming from the overflow vents and he fumes come back in though the tail area? That does not make sense as the cabin should be pressurized, but maybe turning creates negative pressure? No leaks that I can find in the cabin tunnel, wing root.

Just looking for others wih the same observation or tips on how to cure.

Any thoughts?
I have wondered MANY times if this is what contributed to my explosion. I put the plane into a sharp turn and an extreme slip for before landing.
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RV-10 Vesta V8 LS2/BMA EFIS/One formerly flying at 3J1 Hobbs stopped at 150 hours
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  #6  
Old 10-29-2011, 02:58 PM
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Geico266 Geico266 is offline
 
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Quote:
Originally Posted by diamond View Post
How quickly does the smell come on when you turn and how quickly does it go away when you level off?
It comes in right away. Not sure when it goes away, my sense of smell is shot after that.
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  #7  
Old 10-29-2011, 02:59 PM
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Geico266 Geico266 is offline
 
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Quote:
Originally Posted by TSwezey View Post
I have wondered MANY times if this is what contributed to my explosion. I put the plane into a sharp turn and an extreme slip for before landing.
Todd, before the incident did you ever notice the smell of fuel when you were in the pattern?

How full were your tanks?

Was the "official" cause ever figured out?

How are you doing with recovery?
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RV-44 : 4 place helicopter on order.

Last edited by Geico266 : 10-29-2011 at 03:15 PM.
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  #8  
Old 10-29-2011, 08:14 PM
TSwezey TSwezey is offline
 
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Quote:
Originally Posted by Geico266 View Post
Todd, before the incident did you ever notice the smell of fuel when you were in the pattern?

How full were your tanks?

Was the "official" cause ever figured out?

How are you doing with recovery?
What was different than normal was the week before for the Race to Ridgeland I had sealed up all the gaps between the fuselage and wing. I have wondered if that had changed the way fumes were dissipated from the wing area. Both tanks were half empty.

No official cause. Which I doubt there ever will be one.

I have been at 100% for a year now. Ankles sting every once in a while but I don't even notice anymore. And thanks for asking.
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  #9  
Old 10-30-2011, 01:46 AM
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TomVal TomVal is offline
 
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Larry,

I donít know anything about -10 construction, however, would this trouble shooting procedure work??? Connect some plastic tubing to the end of each fuel vent. Run each line of tubing down the fuselage centerline and past the trailing edge of the wing. Mount the tubing with speed tape or equivalent. Conduct a test flight.
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  #10  
Old 10-30-2011, 07:00 AM
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Geico266 Geico266 is offline
 
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Quote:
Originally Posted by TSwezey View Post
What was different than normal was the week before for the Race to Ridgeland I had sealed up all the gaps between the fuselage and wing. I have wondered if that had changed the way fumes were dissipated from the wing area. Both tanks were half empty.

No official cause. Which I doubt there ever will be one.

I have been at 100% for a year now. Ankles sting every once in a while but I don't even notice anymore. And thanks for asking.
Since you sealed up the wing gaps can i assume you were smelling fuel? Or was it just to block cold air? Mine runs warm so there is no reason to seal it.

How is your daughter doing?
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RV-12 : Built and sold!
RV-44 : 4 place helicopter on order.
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