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03-20-2014, 06:26 AM
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Join Date: Feb 2005
Location: Huskerland, USA
Posts: 5,862
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Air /Oil Separator Update
There was a thread started in 2009 (see link below) about air / oil separators. Any PIREPS or updates on newer models? Which ones would best?
http://www.vansairforce.com/communit...+oil+seperator
Airwolf seems to be Vic's favorite. Any other ones measure up?
Anyone use the ASA Separator?
http://www.antisplataero.com/The_ASA_Oil_Seperator.html
__________________
RV-7 : In the hangar
RV-10 : In the hangar
RV-12 : Built and sold
RV-44 : 4 place helicopter on order.
Last edited by Geico266 : 03-20-2014 at 06:50 AM.
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03-20-2014, 09:27 AM
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Join Date: Aug 2009
Location: Goodyear, Arizona
Posts: 877
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I installed the ASA separator about 180 hours ago and have been very pleased with it. My belly is dry as a bone.
__________________
Karl, Goodyear, Arizona (KGYR) ATP, CFII
RV-14A, Flying
Extra 330LX, Flying
RV-8, Sold
RV-7, Sold
Bearhawk 4-Place, Sold
=VAF= donor 2020
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03-20-2014, 09:39 AM
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Join Date: Sep 2009
Location: St. Louis, MO
Posts: 1,788
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I installed the ASA complete unit on our Rv10 around 75 hours ago. No oil on belly whatsoever, oil consumption dropped from 1 qt. every 10 hours to 1qt every 16 hours.
__________________
Bill Peyton
RV-10 - 1125 hrs
N37CP
First Flight Oct 2012
Aviation Partners, LLC
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03-20-2014, 05:05 PM
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Join Date: Mar 2005
Location: DVT Phoenix
Posts: 1,187
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I just today installed an ASA seperator and the product looks nice. It took me a half a day of screwing around but happy with the install. :-) I did not order the install kit and glad because the mounting location will vary on our firewalls. Mine went on the left side but if you knew the hose lengths in advance it would probably be ok. In my case the return hose would been way to short. Larry
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03-20-2014, 07:50 PM
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Join Date: Mar 2008
Location: Stuart, Florida
Posts: 36
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Just Installed ASA Oil Separator
Just installed ASA oil separator and purge valve system today. Installation went as smoothly as Allen said it would EXCEPT for the pipe plug removal in the accessory case of the motor. Other than that, great product, easy install, looks killer. Oil drainback line 'could' have been about an inch longer but was still adequate for installation in suggested place next to brake reservoir. Thanks Allen for a reasonably priced solution to a p.i.a. problem. Can't wait to get my modified wheel, spacers, and balanced tire assembly.
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03-20-2014, 08:55 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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One major problem with the ASA air-oil separator is that Allan designed it for his RV-9A, which has its battery in a non-standard location. Thus, his separator is designed to be installed directly above the battery on the right side of the firewall. This location will make future battery maintenance a challenge one side-by-side RV-7's and -9's.
My installation took 10 hours but after 7 hours of flying there is no oil on the belly.
There should be a full write-up in a future issue of KitPlanes so subscribe now.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
Last edited by N941WR : 03-20-2014 at 08:57 PM.
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03-21-2014, 11:57 AM
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Join Date: Jan 2011
Location: Cumming, Georgia
Posts: 873
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I have the airwolf air oil separator the small one have it mounted high on the firewall and it has keep my belly clean
I know some do not recommend air oil separator but there are thousands of them flying with no issues.
Jack
__________________
Smilin' Jack & Anita Hunt
N507H RV7, KJZP Jasper, GA
EAA690
APRS/ WB4JKY
Retired Corporate Pilot CFI-AI, MEL
CE500, LRJT, HS25, C650, SBJT, CL60
Hunt Aviation, LLC.
Pilot Service, IPC's Biennials.
Comm Glider
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03-22-2014, 07:15 AM
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Join Date: Feb 2005
Location: Huskerland, USA
Posts: 5,862
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Thanks to all who have replied.
Okay, I'm not awake yet and I have a dumb question about the "purge or vacuum valve" that comes as an option with the ASA separator. What does it attach to in order to pull a vacuum on the crankcase? 
__________________
RV-7 : In the hangar
RV-10 : In the hangar
RV-12 : Built and sold
RV-44 : 4 place helicopter on order.
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03-22-2014, 08:11 AM
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Join Date: Nov 2013
Location: Prescott, AZ
Posts: 1,614
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You drill a 5/8 hole in the exhaust pipe. Then clamp the outlet pipe to it. The angle of the cut in the path of escaping exhaust draws down the pressure in pulses. The valve makes it a one way process. Oil burns up as well, keeping the underside of the plane cleaner. I put it on for this reason alone. I won't waste my time in the HP debate. A clean plane is a thing of wonder. It is already fast enough.
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"Kindness is never a bad plan."
exemption option waived. Donation appropriate.
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03-22-2014, 09:11 AM
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Join Date: Feb 2005
Location: Huskerland, USA
Posts: 5,862
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Quote:
Originally Posted by flightlogic
You drill a 5/8 hole in the exhaust pipe. Then clamp the outlet pipe to it. The angle of the cut in the path of escaping exhaust draws down the pressure in pulses. The valve makes it a one way process. Oil burns up as well, keeping the underside of the plane cleaner. I put it on for this reason alone. I won't waste my time in the HP debate. A clean plane is a thing of wonder. It is already fast enough.
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So the exhaust of the engine blow by is vented into the exhaust, the one way valve pulls a small vacuum.... got it.
Thanks! I'm awake now! 
__________________
RV-7 : In the hangar
RV-10 : In the hangar
RV-12 : Built and sold
RV-44 : 4 place helicopter on order.
Last edited by Geico266 : 03-22-2014 at 09:30 AM.
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