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  #1  
Old 05-31-2021, 07:59 AM
Charles in SC Charles in SC is offline
 
Join Date: Aug 2006
Posts: 735
Default Flat tire question

I have read here over the years about folks having to deal with flats and some carry the tools and spare to change them. My question is what causes the flats? Debris on the ramps/runways, improperly installed tires, tubes etc? I am asking this because I am just getting my -7 going and in over 40 years of being around aviation I have not ever had a flat but the ones I have seen were mostly due to pinched tubes and improperly inflated tires. Maybe I have just been lucky.
Thanks in advance!
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  #2  
Old 05-31-2021, 08:15 AM
Norman CYYJ Norman CYYJ is offline
 
Join Date: Feb 2005
Location: Victoria B.C.
Posts: 1,385
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Goat heads on the runway or taxiway are wicked on tires.
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  #3  
Old 05-31-2021, 08:16 AM
Taltruda Taltruda is offline
 
Join Date: Oct 2017
Location: Las Vegas, NV
Posts: 767
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Iíve had a flat on a Cessna that I delivered once.. the valve stem was so dry rotted, that it fell off and rubber crumbled by hand. The previous owner said that the other side went flat just like that, but he only changed the one side. I would say maintenance is probably a big cause.. under inflation along with hard landings, or more probably side load landings are a big factor.
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  #4  
Old 05-31-2021, 09:48 AM
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jrtens jrtens is offline
 
Join Date: Apr 2018
Location: Utah
Posts: 186
Default

The last two flats I had were caused by air leaking past the filler valve in the stem. One I just tightened and the other I replaced the valve.
So I carry a stem valve tool and extra valve in my go toolbox.
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  #5  
Old 05-31-2021, 04:30 PM
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Jpm757 Jpm757 is offline
 
Join Date: May 2013
Location: Sherman, CT
Posts: 966
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Low tire pressure combined with heavy braking can cause the tire/ tube assy to rotate and tear or shear the tube stem. Keep the hangar floor and ramp clean, especially those little pieces of safety wire.
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Last edited by Jpm757 : 05-31-2021 at 08:12 PM. Reason: Add
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  #6  
Old 05-31-2021, 05:51 PM
SantosDumont SantosDumont is offline
 
Join Date: Sep 2019
Location: Henderson, NV
Posts: 98
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I think I've had like 4 flats at this point. Now I carry an extra tube with me.
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  #7  
Old 05-31-2021, 06:59 PM
PilotjohnS PilotjohnS is offline
 
Join Date: Jan 2016
Location: Southwest
Posts: 1,578
Default Tubeless

Do the tubeless tires do any better with regards to flats?
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WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for their use.

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  #8  
Old 05-31-2021, 07:34 PM
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emsvitil emsvitil is offline
 
Join Date: Oct 2019
Location: SoCal
Posts: 556
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Who makes a 5" tubeless rim other than Beringer?
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  #9  
Old 05-31-2021, 07:38 PM
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Tankerpilot75 Tankerpilot75 is offline
 
Join Date: Jan 2015
Location: Oklahoma City, OK
Posts: 650
Default Three Flats

Iíve experienced three flats in my RV7A. One just as I was buying it, another taxing to the runway, and the third pulling it out of the hangar. I would say two of these flats were do to poor maintenance practices and one was due to extreme temperature change. In all three cases the ďlow tireĒ did not look visibly flat at first glance.

IMHO tires on the RV, because of their small size, tend to appear normal looking when air pressure is as low as 20 lbs. I now check all tire pressures at least quarterly and always after a significant change in the weather (major temperature drop). Havenít experienced one tire problem since instituting this practice.
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  #10  
Old 06-01-2021, 06:52 AM
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scard scard is offline
 
Join Date: Jun 2005
Location: Cedar Park, TX
Posts: 3,301
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It seems an E-Lift wards off most danger of a flat .
https://vansairforce.net/community/s...d.php?t=184578
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