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05-13-2016, 07:39 PM
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Join Date: May 2016
Location: Braham, MN
Posts: 36
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Tire Pressure Checks
As a new RV12 owner, can someone tell me how often I need to remove the fairings and check tire pressure. I did this 10 weeks back and for me it was close to a two hour process. Pressure was down a couple pounds at that point and it had been three months since it left the factory.
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05-13-2016, 08:07 PM
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Join Date: Sep 2006
Location: Windsor, California
Posts: 920
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Lot's of tire air pressure info on RV-12 portion of this site. Some tubes leak air, some don't. Might be a leaking air valve? My tubes seem to lose about a two pounds over three months. So every three months I remove the aft portion of each wheel fairing (@ 16 screws each - goes quickly with a power screwdriver) to inspect the tire tread, brake linings, and add some air. Since the RV-12 uses brakes for steering and stopping, these little inspections seem prudent.
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David Heal - Windsor, CA (near Santa Rosa)
EAA #23982 (circa 1965) - EAA Technical Counselor and Flight Advisor; CFI - A&I
RV-12 E-LSA #120496 (SV w/ AP and ADS-B 2020) - N124DH flying since March 2014 - 940+ hours (as of September 2020)! 
V AF donation through June 2021.
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05-14-2016, 07:44 AM
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Join Date: Apr 2014
Location: Port Orange, Fl
Posts: 931
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I actually leave my fairings off for local flying just so I can look at all that stuff during the preflight and install the fairings when I'm planning a trip. That's the only time the extra speed is more important.
Checking only the tire pressure is easier - drill a hole sized to fit either hardware store chrome plugs, or stainless spring covers from an aviation supplier and get a valve stem extension to use to check the pressure. There are several threads that talk about this ...
http://www.vansairforce.com/communit...ad.php?t=62804
http://www.vansairforce.com/communit...d.php?t=116868
and others ...
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Tom
Port Orange, Fl
EAA #51411
RV-12 N121TK ELSA #120845; first flight 06/10/2015; 700 hrs as of 02/2020
RV-12 N918EN ELSA #120995 Eagles Nest Project; first flight 05/18/2019
SPA Panther N26TK; First Flight 03/13/2020
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05-14-2016, 07:55 AM
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Join Date: Oct 2012
Location: New Ulm, Minnesota
Posts: 283
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I loose about one pound per month with leak stop tubes. 5 months 5 pounds low.. I can do both tires in less than 30 minutes..
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Robin Mckee
New Ulm, MN 56073
RV3b N219BB
420 hours and counting 
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05-14-2016, 08:09 AM
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Join Date: Jan 2005
Location: Martinsville, IN
Posts: 2,326
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I have a note up on my maintenance board to check air pressure every 90 days along with the torque on the prop bolts. Installing a hole in the side of the wheel pant and using a tire valve extension makes this about a 15 minute exercise.
I went this route due to causing a flat tire on my -12 while away from home because of a low tire.
__________________
Randy Pflanzer
Greenwood, IN
www.pflanzer-aviation.com
Paid through 2043!
Lund fishing Boat, 2017, GONE FISHING
RV-12 - Completed 2014, Sold
427 Shelby Cobra - Completed 2012, Sold
F1 EVO - partially completed, Sold
F1 Rocket - Completed 2005, Sold
RV-7A - Partially completed, Sold
RV-6 - Completed 2000, Sold
Long-EZ - Completed 1987, Sold
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05-14-2016, 09:39 AM
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Join Date: Mar 2005
Location: DVT Phoenix
Posts: 1,187
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------Installing a hole in the side of the wheel pant and using a tire valve extension makes this about a 15 minute exercise.------
It is a great suggestion and works. And while you are at it, While the valve is lined up with the hole in the pant, mark the tire on the back side pointing to the floor with some paint. This way you can roll the plane, see the mark, air the tire and off you go. Larry
I use one of these Amazon $20.00
Amflo 150 12" Heavy Duty Straight-on Tapered Chuck Inflator Gauge - 10 to 90 PSI
Last edited by Larco : 05-14-2016 at 09:42 AM.
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