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06-10-2012, 09:52 PM
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Join Date: Nov 2006
Location: Waco, Texas
Posts: 1,658
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AFP Purge Valve Photos
Can some of you post some photos of your purge valve with the cable control attached?
I was looking at mine closely today and the valve is clocked in a way that I have to push for cut-off and pull for rich. Exactly the opposite of what we want. Looking at my setup closely, I can't see any way to re-route the cable and re-clock the arm in a way where you pull-to-lean.
If you can post a pic of your setup, I'd appreciate it. I'm sure I'll have to make some modification to make it work correctly.
Thanks,
Phil
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06-11-2012, 03:47 AM
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Join Date: Jun 2006
Location: Delaware, OH (KDLZ)
Posts: 4,196
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Quote:
Originally Posted by Phil
Can some of you post some photos of your purge valve with the cable control attached?
I was looking at mine closely today and the valve is clocked in a way that I have to push for cut-off and pull for rich. Exactly the opposite of what we want. Looking at my setup closely, I can't see any way to re-route the cable and re-clock the arm in a way where you pull-to-lean.
If you can post a pic of your setup, I'd appreciate it. I'm sure I'll have to make some modification to make it work correctly.
Thanks,
Phil
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I would give Don a call. Surely you aren't the first to run into this. I still have to do this too. I'm finishing the fwf right after I finish the cabin cover.
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06-11-2012, 06:07 AM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,686
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__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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06-11-2012, 06:16 AM
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Join Date: Feb 2005
Location: Chesterfield, Missouri
Posts: 4,514
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Quote:
Originally Posted by Phil
Can some of you post some photos of your purge valve with the cable control attached?
I was looking at mine closely today and the valve is clocked in a way that I have to push for cut-off and pull for rich. Exactly the opposite of what we want. Looking at my setup closely, I can't see any way to re-route the cable and re-clock the arm in a way where you pull-to-lean.
If you can post a pic of your setup, I'd appreciate it. I'm sure I'll have to make some modification to make it work correctly.
Thanks,
Phil
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I sent my unit back to Don for a reorientation of the valve lever. It came back the way I wanted it. Pull for OFF, Push for ON with a straight shot at it from the fire wall through the aft baffle.
Otherwise you have to run the cable around the front or side of the unit to get what you want. That is not necessary, the valve can be changed to get what you want.
__________________
RV-12 Build Helper
RV-7A...Sold #70374
The RV-8...Sold #83261
I'm in, dues paid 2019 This place is worth it!
Last edited by David-aviator : 06-11-2012 at 06:18 AM.
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06-11-2012, 09:53 AM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
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I dont have a photo of it, but my installation is very similar to what Walt shows.
I think it is also a good idea to have a spring installed to keep the valve open, if the push/pull cable or its mounting components fail.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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06-11-2012, 01:58 PM
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Join Date: Oct 2005
Posts: 1,516
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I suppose you could send the purge valve back to have the arm reoriented but most installations I have seen are like Walt's or mine.
Walt used what appears to be a mixture grade cable with a threaded end,
probably the best choice.

__________________
Ernst Freitag
RV-8 finished (sold)
RV-10 Flyer 600 plus hours
Running on E10 mogas
Don't believe everything you know.
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06-11-2012, 02:16 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,686
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Quote:
Originally Posted by Mike S
I think it is also a good idea to have a spring installed to keep the valve open, if the push/pull cable or its mounting components fail.
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Do you have springs on your throttle and mixture ?? 
__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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06-11-2012, 02:28 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
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Quote:
Originally Posted by Walt
Do you have springs on your throttle and mixture ?? 
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Nope, but them I am using a higher quality cable for them. And they do get a lot more use than the purge valve, which I use only once a flight.
My purge valve is operated by a much simpler wire-in-a-cable setup, and a pinch connector at the arm.
As I recall, the good folks at AFP do recommend a spring.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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06-14-2012, 07:21 AM
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Join Date: Nov 2007
Location: Melbourne Florida
Posts: 111
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Precision Fuel System W/Purge Valve
Anyone installed the airflow purge valve with the Precision EX fuel system? I just noticed the orientation of the fuel divider is significantly different between the Airflow and Precision setups. I was just going to order the purge valve bracket from airflow, but from the posted pics, it does not appear that will work. Looks like I will need to manufacture my own bracket for the purge valve.
Anyone got pics of a precision fuel system with airflow purge valve?
Eulice Curington
RV-10 Building
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