If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Leak proof tubes
A while back...Last Summer there was a theread about the new leak
proof innertubes for aircraft tires. (I've forgottten the name), but at any rate I wanted to add that I've had them on the mains since last spring and still haven't had to pump them up except once about a month after the instalation of the new tires. It's a long way from every two weeks. Roger Halstead (K8RI & ARRL life member) (N833R, S# CD-2 Worlds oldest Debonair) www.rogerhalstead.com |
#2
|
|||
|
|||
Leak proof tubes
Same here. I have lpt on the mains and an old tube on the nose. I
have to air the nose tire every couple of weeks but the mains can sometimes go for 6 weeks. |
#3
|
|||
|
|||
Leak proof tubes
On 2005-12-06, Paul kgyy wrote:
Same here. I have lpt on the mains and an old tube on the nose. I have to air the nose tire every couple of weeks but the mains can sometimes go for 6 weeks. I'll mention again how surprised I was as an owner the first time I put an air gauge on my tires. "Slightly low" looking aircraft tires might have half the recommended pressure in them. The first time I reinflated my tires I realized that every rental I'd ever flow had "flat" tires. -- Ben Jackson http://www.ben.com/ |
#4
|
|||
|
|||
Leak proof tubes
I'll mention again how surprised I was as an owner the first time I put
an air gauge on my tires. "Slightly low" looking aircraft tires might have half the recommended pressure in them. The first time I reinflated my tires I realized that every rental I'd ever flow had "flat" tires. I get to see a lot of airplanes, and most of the people I'm picking up at the airport are getting out of aircraft that have flat tires. We air ours up every few weeks, but they are always down at least 25%. It's a royal PIA when the high temperature is predicted to be 0 F. Face it: aircraft tires are expensive pieces of sh*t. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" |
#5
|
|||
|
|||
Leak proof tubes
Jay Honeck wrote:
I'll mention again how surprised I was as an owner the first time I put an air gauge on my tires. "Slightly low" looking aircraft tires might have half the recommended pressure in them. The first time I reinflated my tires I realized that every rental I'd ever flow had "flat" tires. I get to see a lot of airplanes, and most of the people I'm picking up at the airport are getting out of aircraft that have flat tires. We air ours up every few weeks, but they are always down at least 25%. It's a royal PIA when the high temperature is predicted to be 0 F. Face it: aircraft tires are expensive pieces of sh*t. They may well be, but if you want inner tubes that don't leak, try the Michelin stuff. They're amazingly good. -jav |
#6
|
|||
|
|||
Leak proof tubes
"Javier Henderson" wrote in message
... Michelin stuff. They're amazingly good. -jav http://www.desser.com/DM1172.pdf lots of tire info. I agree with Jav. We put new AirStop tubes in our Michelin Air tires when we bought them over 1 1/2 years ago. Original owner had 6 ply tires on the Aztec instead of 8 ply. We've had absolutely no problems so far. We check the pressure regularly and usually only need to add a lb or two every 6-8 weeks. I find that the most common cause of those leaks is the guy that checked the pressure before me didn't use a wrench to tighten the stem cap. When I snug the cap up with a wrench they are still properly inflated 8 weeks or longer. If you look inside the caps, there's a rubber seal that is supposed to seal against the rim of the valve stem, just a little pressure with a wrench while holding the stem with pliers and a rag will seat the seal against the stem. Just don't over do it. I was once told by an old timer that the reason aircraft tires and tubes leak is because they have a higher neoprene content because neoprene resists fuel and oil better than the high rubber content tires, but neoprene doesn't hold air as well. Anybody know the details surrounding this or if it's true? Thanks, Jim |
#7
|
|||
|
|||
Leak proof tubes
I posted this information in a previous thread in this group.
Here it is again for those who would like a better understanding. Repeat of a posting made to this group Aircraft inner tubes were traditionally manufactured from a natural rubber compound. A tire inner tube is made by taking a length of extruded "rubber" tube which is then joined into its circular form by joining it's ends together. This joining process is generally referred to as splicing. Natural rubber readily bonds to itself and therefore produced the strongest "splice". However natural rubber is somewhat porous and results in a slow loss of air. In the 1970's a new oil based polymer know as butyl was introduced to the tire industry. Butyl is non-porous and solved the problem of air loss but was very difficult to splice into inner tubes so was only adopted for road vehicle tubes for many years. Aircraft tubes continued to be made from natural rubber until relatively recently. Goodyear were an early user of butyl for inner tubes using the trade name "Air Seal" Therefore you have a choice, natural rubber tubes may be less prone to failure but continually lose air or butyl tubes which may fail earlier but you will not need airing up very often. Me ........ I use butyl ....... Why ............ Because I designed the machines which are now used to splice butyl inner tubes :-) End of previous post -- Roy N5804F Piper Archer "I have had some bad landings but I have never missed the runway" "Javier Henderson" wrote in message ... Jay Honeck wrote: I'll mention again how surprised I was as an owner the first time I put an air gauge on my tires. "Slightly low" looking aircraft tires might have half the recommended pressure in them. The first time I reinflated my tires I realized that every rental I'd ever flow had "flat" tires. I get to see a lot of airplanes, and most of the people I'm picking up at the airport are getting out of aircraft that have flat tires. We air ours up every few weeks, but they are always down at least 25%. It's a royal PIA when the high temperature is predicted to be 0 F. Face it: aircraft tires are expensive pieces of sh*t. They may well be, but if you want inner tubes that don't leak, try the Michelin stuff. They're amazingly good. -jav |
#8
|
|||
|
|||
Leak proof tubes
Javier Henderson wrote:
They may well be, but if you want inner tubes that don't leak, try the Michelin stuff. They're amazingly good. Or buy the Aero-Classic "Leak-Guard". It's the same tube without the Michelin name and a higher price stamped on it. Works like a charm. Haven't had to fill the tires in months. -Doug -- -------------------- Doug Vetter, ATP/CFI http://www.dvatp.com -------------------- |
#9
|
|||
|
|||
Leak proof tubes
I think prices just took a big jump in the last few weeks.
Kent Felkins "Doug Vetter" wrote in message ... Javier Henderson wrote: They may well be, but if you want inner tubes that don't leak, try the Michelin stuff. They're amazingly good. Or buy the Aero-Classic "Leak-Guard". It's the same tube without the Michelin name and a higher price stamped on it. Works like a charm. Haven't had to fill the tires in months. -Doug -- -------------------- Doug Vetter, ATP/CFI http://www.dvatp.com -------------------- |
#10
|
|||
|
|||
Leak proof tubes
On Wed, 07 Dec 2005 10:09:41 -0500, Javier Henderson
wrote: Jay Honeck wrote: I'll mention again how surprised I was as an owner the first time I put an air gauge on my tires. "Slightly low" looking aircraft tires might have half the recommended pressure in them. The first time I reinflated my tires I realized that every rental I'd ever flow had "flat" tires. I get to see a lot of airplanes, and most of the people I'm picking up at the airport are getting out of aircraft that have flat tires. We air ours up every few weeks, but they are always down at least 25%. It's a royal PIA when the high temperature is predicted to be 0 F. Face it: aircraft tires are expensive pieces of sh*t. They may well be, but if you want inner tubes that don't leak, try the Michelin stuff. They're amazingly good. As I said, mine have been going several months now without having to add air. "I do check the pressure every couple of weeks". Before I had to add air at least that often. I figure the $28 per tube is worth it. Roger Halstead (K8RI & ARRL life member) (N833R, S# CD-2 Worlds oldest Debonair) www.rogerhalstead.com -jav |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
water ballast leak | Robert Harvey | Soaring | 0 | May 26th 05 10:33 PM |
Oil Leak on top of the engine -- follow up | Jay Honeck | Owning | 6 | February 13th 05 01:50 PM |
Oil leak on top of the engine | Jay Honeck | Owning | 31 | February 12th 05 02:27 AM |
oil leak question | Dick | Home Built | 18 | November 19th 04 03:14 PM |
~ DICK GRILLED FOR CIA LEAK - CAN YOU SAY PRISON?! ~ | ~ THE CHOKING CHIMP ~ | Military Aviation | 0 | June 6th 04 05:34 AM |