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timrvator(at)comcast.net
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 Posted: Sat Mar 08, 2008 4:34 am Post subject: Butyl inner tubes "just don't leak" |
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A February 2008 Aviation Consumer article on tires says"
"...Until recently, tubes were manufactured from a natural rubber
compound. Unfortunately, natural rubber is relatively porous and loses
pressure more readily than synthetic materials. Therefore, your tires
would lose pressure and go soft, too.
Enter the butyl rubber tube, now largely the standard among all aircraft
inner tube manufacturers. Since unused inner tubes are perfectly good
for installation, we’re not saying you won’t find a natural rubber tube
out there on some shop’s shelf. It’s perfectly serviceable, it just
won’t hold air as well.
Goodyear’s Brown says the new butyl tubes, introduced some seven years
ago, improve air retention by a factor of about 10. Steve Chlavin of
Desser Tire, the GA industry’s mega tire retailer, agrees, saying, "The
new butyl leak-resistant tubes just don’t leak.""
It's fairly easy to add air to my RV-6A tires - the valve stems point
out, so the tire can be aired through a small hole in the fairing. The
situation is more challenging in a stock RV-10 (valve stems on the mains
point toward the axle, for example). With this in mind, does anybody
know whether the tires Vans shipped with the RV-10 kits are butyl or
natural rubber?
Tim
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Tim Lewis -- HEF (Manassas, VA)
RV-6A N47TD -- 1000 hrs
RV-10 #40059 under construction
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bcondrey
Joined: 03 Apr 2006
Posts: 580
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| Posted: Mon Mar 10, 2008 6:15 am Post subject: Butyl inner tubes "just don't leak" |
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As I recall the tubes for the mains are AirStops (butyl) but the nose is
not.
Bob #40105
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