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  #1  
Old 11-09-2009, 06:10 PM
SteveHRV7 SteveHRV7 is offline
 
Join Date: Apr 2006
Location: Okemos, Michigan
Posts: 45
Default Center console and Andair valve

I plan to install the center console from Aircraft Extras and an Andair fuel valve in my fuel injected RV7a. Has anyone installed their console? - and if so, which Andair fuel valve and extension did you use? I believe that a typical FI system requires a return line for fuel. Does this dictate which valve to use?

Also - if anyone knows - does the new Andair Boost Pump use the standard Andair valve?
Thanks!
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  #2  
Old 11-09-2009, 06:30 PM
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RV7Factory RV7Factory is offline
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Location: Livermore, CA
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Default

Quote:
Originally Posted by SteveHRV7 View Post
I believe that a typical FI system requires a return line for fuel. Does this dictate which valve to use?

Also - if anyone knows - does the new Andair Boost Pump use the standard Andair valve?
FI systems don't necessarily require a return line, in fact very few do. In some cases there are other ways to handle it other than a more expensive duplex fuel selector.

My Andair pump kit purchased at AirVenture came with their FS20-7 valve.
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  #3  
Old 11-23-2009, 11:10 PM
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sglynn sglynn is offline
 
Join Date: Mar 2008
Location: Anacortes, WA
Posts: 823
Default fuel selector valve for IO-360

Brad, hi, please could you explain more about the need for fuel return lines and selector valve for use with an IO engine? I'm about to install valve and fwd covers and plan to use Van's IO-360 engine. Question, will I need a valve selector that switches both the fuel line and return lines? I thought IO's needed return lines and consequently a valve that can switch them, if not, how come? What other options are there for the return lines? I've already installed return lines in the tanks in preparation. I'm about to order Van's high pressure IO fuel pump. Do I need a different selector than the brass one from Vans? thanks
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  #4  
Old 11-23-2009, 11:39 PM
nucleus nucleus is offline
 
Join Date: Sep 2006
Location: Bozeman, Montana
Posts: 858
Talking No Return Fuel on IO 360

Airplane fuel injection does not use a return line. If you are adapting an automotive system you may need a return line. Airplane FI as used on an IO 360 is a very different animal than what we are used to in cars. Constant flow, lower pressure, nothing electric except for the boost pump which essentially is a backup/booster for the mechanical pump on the engine.

So no, you do not need a different selector than the one from Van's.

Can't help you much on the new pump, I have the old style; but the boost pump is upstream of the selector valve, so it probably does not matter which selector valve you use.

Hans
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  #5  
Old 11-24-2009, 12:14 AM
Bevan Bevan is offline
 
Join Date: Sep 2007
Location: BC
Posts: 1,674
Default

If I recall, the one FI system (ECI I think) requires a return line. If you install a purge valve, it too will recquire a return line. I believe however, that these don't have to go through a duplex valve, but can simply just go back to one tank or the other.

Return lines are not absolutely required for an IO-360 but may be desireable, and a little extra work and cost.

Bevan
RV7A wiring
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  #6  
Old 11-24-2009, 08:03 AM
Wolf Wolf is offline
 
Join Date: Oct 2007
Location: Roseburg, Oregon
Posts: 122
Smile valve

I have the console and purchased the RV package direct from Andair with the extension and two universal joints. It worked out perfectly, I also have Precision Eagle EMS fuel injection and no return line.

Jay Erickson, RV-7A finishing
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  #7  
Old 11-24-2009, 10:00 AM
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erich weaver erich weaver is offline
 
Join Date: Aug 2006
Location: santa barbara, CA
Posts: 1,682
Default AFP basics

Airflow Performance is one of the more common injection systems and utilizes a purge valve and associated fuel return line. The purge valve is mounted on the distribution spider on top of the engine. The purge valve is used to flush fuel vapor out of the system (up to the point of the distribution spider anyway), prior to starting the engine, especially for hot starts. It is also used to shut down the engine, in lieu of using the mixture knob. The purge valve requires a fuel return line that can either be plumbed directly to one of the tanks, or it can tee into one of the fuel supply lines running from a tank to the tank selector valve. For the latter case, when you are purging prior to a hot start, you would want to have the tank selector valve set to the opposite side from where the purge line tees in; otherwise, you would just be circulating hot fuel and vapor. So, if the purge line tees into the fuel line from the right tank, you would set the fuel tank selector valve for the left tank, at least for purging purposes.

erich
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  #8  
Old 03-18-2010, 11:29 AM
aerhed aerhed is offline
 
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Location: Big Sandy, WY
Posts: 2,567
Default Return

TCM constant flow FI requires a return from the engine fuel pump. Very different pump system from Bendix style RSA FI. RSA is mo pilot friendly I think, just trickier to hot start cause you can't flood start as easily.
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  #9  
Old 03-18-2010, 12:55 PM
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planejames planejames is offline
 
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Location: Mt Maunganui, New Zealand
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Default Forum abuse...

Quote:
Originally Posted by tucson9a View Post
*MODERATED*
tucson9a, I find it very frustrating that you have posted this advertisment in no less than 8 different threads...
Just one post in the classifieds section would have been plenty of exposure for anyone interested in purchasing your valve.

Moderators, can you please remove the 7 unnecessary posts.

Cheers,
James.
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Last edited by RV7Factory : 03-23-2010 at 03:17 PM.
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  #10  
Old 03-18-2010, 07:52 PM
#N72CR #N72CR is offline
 
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Location: KDVT, AZ
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Default



This is from someone on this site.
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