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  #11  
Old 03-19-2015, 06:10 PM
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Mark Albery Mark Albery is offline
 
Join Date: Jul 2007
Location: Redwood City CA
Posts: 512
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Quote:
Originally Posted by rus23 View Post
I had an engine quit on me this past August. O-320, rv4. Switched tanks, turned on pump. Looked for field.
Did you try carburetter heat? The boost pump should have enough dry lifting capacity to handle any air in the lines and get you running in a few seconds.

Glad you got to walk away from it!
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  #12  
Old 03-20-2015, 11:07 AM
Tomcat RV4 Tomcat RV4 is offline
 
Join Date: Nov 2007
Location: Poughkeepsie, NY 12603
Posts: 151
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I agree with Sid, I had an instructor show me that in a 150, and it is scary how far (long) engine will run on whats in pipes, carb,etc.
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  #13  
Old 03-20-2015, 11:39 AM
Whitman Whitman is offline
 
Join Date: Oct 2010
Location: Niceville, FL (54J)
Posts: 176
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Originally Posted by Tomcat RV4 View Post
I agree with Sid, I had an instructor show me that in a 150, and it is scary how far (long) engine will run on whats in pipes, carb,etc.
Some things are better left verbally teaching. The technique of placing the fuel selector to OFF to prove a point is dangerous and has cost lives in some cases where instructors forgot to change the selector to both before takeoff. However, SID is spot on. Pick the tank before you start engines (or after landing the flight before) and don't touch it until you are airborne.
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  #14  
Old 03-20-2015, 12:11 PM
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Infidel Infidel is offline
 
Join Date: Sep 2011
Location: WV22
Posts: 764
Default Enough fuel remains in the lines to get airborne

Years ago, I had a Titan Tornado II and under the direction of someone whom I placed a lot of trust in his experience because of my ignorance of experimental aircraft at the time, I installed an electric fuel pump he provided and insisted I install. Unbeknownst to me at the time, the fuel pump was from a motor vehicle and was not "free flowing."

Long story short; for my first maiden voyage, I started the Rotax 912, tightened the sea tbelts, (which prevented me from reaching the panel) taxied to the runway, did my run-up, and took off. 200' above the ground the engine stopped. Subsequently, I successfully made an off field landing by threading the plane through a myriad of perk holes in a subdivision under construction.

In hindsight, if I would have turned the electric pump on, the engine wouldn't have starved for fuel for that flight. But that fuel pump could've surely posed a problem in the future.

My ground operations before launching was anywhere between 5-10 minutes so, like stated before, one would be amazed at how long an engine will run with no fuel being supplied from the tank(s).
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  #15  
Old 04-26-2015, 11:29 PM
skiandtom skiandtom is offline
 
Join Date: May 2008
Location: COlumbia, SC
Posts: 27
Default Fuel Selector

My brother and I have an Andair fuel selector valve in our -4. We have a 160 HP, 8.5 compression ratio engine. We use 93 octane or 100LL in the left tank only and 100LL in the right tank only. Anytime we are in the pattern we are on the right tank, so we are using 100LL on take off or landing. We have the same arrangement on our -7A with 180 HP.
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