Tire pressure revisited

[Piloto]

I like them a little over inflated as well. The last tube I reused it failed a couple days later. The nose tire it was, it closed the runway and the prop was less than 1 inch from the pavement. Seems they stretch and they don't recommend re-using them.

Wow!! glad to know the prop didn't hit ground. What you have experienced may has been due to small metal particles in the new tire at installation time of the tube. It is recommended that before the tube is inserted to air blow inside the tire and pass your hand inside to insure there is nothing that can puncture the tube.

I have seen tubes deflating due to continuous taxing with brakes applied when taxing with high power. This is more prone to happens at night when the pilot taxi with high power to keep the battery voltage up to avoid discharge due to landing lights on. More prone on those with DC generators. The brake pads heat up the wheel and weakens the inner tube. On some instances you can see the red glow out of the disc. To avoid this is better to switch to LED lights

José

[jetdriven]

I saw that once on a freight dog Piper Navajo Cheiftain. One engine quit inside the marker so he firewalls the other one to continue down the ILS at Denver. Busts out at 200' and lands, didn't tell the tower either since he ran out of gas between Jeffco and DEN. So he is having trouble taxiing on one engine since the crankshaft sits right on the centerline of the landing gear, perhaps outside a little. So he has like takeoff power on the left engine and holding a great boot full of left rudder too, the brake is jammed nearly full too. He taxied two miles in this bastard configuration. He pulls up in this thing the exhaust and the brake disc on the same side are glowing bright orange. I asked my buddy Chris, " is that your plane you're taking to Kearney?" All he could do was shake his head. Just as the prop comes to a stop the rubber o-ring in the brake cylinder lets go and 5606 red hydraulic fluid is shooting onto the rotor with a loud hiss, just like a dog marking his territory. Then it lit. WHOOF and now it's on fire. Pretty good size too I turned around guys were running like cockroaches when you turn on the kitchen light. Well since he ran the right side out of gas the left couldn't have much left in it, so WTH I grab the fire extinguisher from my 402 and empty it into the brake fire. By then i had some help and a couple more put it out.

So Chris comes back, I mentioned he had the day off now. The mechanic walks up and says hell no this thing is leaving with the freight in an hour, load it up. Chris turned pale. The mech jacked up the Navajo and stuck a new brake caliper on there, bled it and set it down in 30 minutes. The tire is still smoldering and there is soot on the bottom of the wing and the gear door. And that was, as they say, that.

[cliffy]

Oh the life of a freight dog!!!

[Guest Eagle2]

A properly maintained compressor will filter out water. Inert gases, being inert, do not react--that's why they are called "inert."

Both of you, please stop the squabbling and name calling, it's detracting from the discussion here. I'm glad the USAF is protecting their magnesium wheels from the inert gases that don't react with anything. I suppose a nitrogen separator is cheaper to run and maintain than an air compressor? And that it magically sorts 100% of the water out while separating N2 from the atmosphere, and not reintroducing any while compressing the N2.

Its not the gases there Hank, it's the dry nitrogen air. Magically to you , just means you don't understand it not that it isn't so………..Some folks actually mentioned to me this was a blue collar site. Thanks for verifying this folks, I'll continue to let the professionals that I can afford to, service my aircraft. Ever heard of 100% aviators oxygen? Magic shit also that they pull from the atmosphere. Also glad to see your sarcasm for the USAF, of course they know nothing about aircraft………..or not at least as much as Hank. And which part of the air compressor filters out water?????????? 

[Andy95W]

Wow. You've now maliciously dumped on two well liked and respected members of this forum. Can't wait to see what you come up with as an encore to prove the opinion we now have of you.

[Guest Eagle2]

Wow. You've now maliciously dumped on two well liked and respected members of this forum. Can't wait to see what you come up with as an encore to prove the opinion we now have of you.

Its an internet forum, doesn't really mean a whole lot of…………well anything. And you know the old saying about opinions. Not like I'm dealing directly with Mooney factory here, just people with "opinions" and you already mentioned that.

[Guest Eagle2]

Eagle2

 

Here is a link that you will find useful:

 

http://www.ngpa.org

Hmmmm, funny I didn't even know the site existed…….thanks for making me aware that folks that have the freedom of choice who they have sex with fly aircraft also. It is 2015 you know ;-]

[philiplane]

From a commercial maintenance perspective, the Michelin Air Stop tubes are the best you can buy. They are the only company that actually makes their own tubes.

 

All the others farm it out to various low bidders. I have had several Desser tubes fail, either via valve stems breaking off, or tears in the mold lines of the tube. These tubes seemed odd to begin with, they were stiffer than usual. Dessert replaced them but of course the customers were on the hook for labor and aggravation due to flats on landing or taxiing. Not fun. 

 

Adding ten percent to your inflation spec will help since the tire loses air the moment you take the gauge off of it. Also, most inflation specs are given when the plane is on jacks, so you should expect a higher reading when it's on the ground. Cirrus for example specifies main tires set to 62 PSI, tolerance of +5, -0, on jacks. So you would want 67-70 PSI on the ground to be correct. Most maintenance manuals are not as specific about tire pressures but they are always a function of gross weight and landing speeds. The same 600x6 6 ply tire may be inflated from as little as 18 PSI on a Cessna 140 to as much as 48 PSI on larger Pipers. The tire itself is capable of over 60 PSI and will run cooler at higher pressures. At the highest settings, you will sacrifice the ride quality and a tiny amount of dry braking action, but wet traction improves at the higher pressure.

[Guest Eagle2]

The pilots here know more about Mooney's than the factory.  The factory does not spend thousands of dollars fixing them or thousands of hours flying them....

At least they believe they do! Your right the factory does not spend thousands of dollars fixing them (they just engineer and fabricate them),BUT I'm certain since 1955 the factory pilots have flown thousands of hours. BTW Jimmy boy are you homophobic or gay?????

[Guest Eagle2]

It is for all your F15 buddies and anyone who graduated from the ZOO.......

Close, F-16's actually and yes I was an academy grad also known as  (the zoo). Wow this site is really not supportive of the US military…….a fucking disgrace.

[Andy95W]

Actually, we are very supportive of the military, with many former and current military members. I graduated West Point in 1988.

We are not very supportive of the disrespectful.

[Guest Eagle2]

Actually, we are very supportive of the military, with many former and current military members. I graduated West Point in 1988.

We are not very supportive of the disrespectful.

I'm sorry Andy, disrespectful to WHO????????? Did you read the entire thread, if so you'll see I was respectful and trying to be helpful.

[Guest Eagle2]

I'm sorry Andy, disrespectful to WHO????????? Did you read the entire thread, if so you'll see I was respectful and trying to be helpful.

And one of your hallowed members sending me a link to a gay site for some reason, and I'm disrespectful??????????????

[Andy95W]

Really??????????????? Do you actually think I was saying the rubber would corrode??????????????? Why do you have to continually add air to your tires, because the rubber leaks! Yes your right wheel corrosion is a serious issue, thats why the US military uses NITROGEN to fill tires. And temperature change is not the real reason for using nitrogen genius (actually very minimal), I just explained the REAL reason to you. AGAIN question asked, reason given you can make up all the crap you want.

You wrote this in response to Byron, who hadn't posted anything to deserve this level of vitriol. Disrespectful.

Hank and I fly M20Cs. Perhaps you can tell us how you spend more on vacations than BOTH of our airplanes are worth.

I can't comment on Jim's link, but apparently I'm not the only one who feels this way.

I'm sorry I became embroiled in this, and will gladly leave others to it.

[Guest Eagle2]

The order of best flying/road partners:

 

1st....anyone from the Navy, Marines or Army.....some of the best are former helicopter pilots from those services....Also anyone from a civilian background.  All equal....

2nd...Just about anyone on the planet Earth including ISIS and other islamic terrorists.......

3rd....Hillary Clinton or Nancy Pelosi....

 

 

4th...Anyone from the ZOO who thinks they are God's gift to aviation........and as a rule they are not.......

 

This only comes from over 2 decades of 121 flying........but what do I know........I am just a lowly civilian guy with a 51 year old airplane......

Honestly don't know what the hell you're talking about here???????? Except the dig on the Academy grads, they teach us to be that way to survive in a dogfight. 

[Hondo]

FWIW Mike Busch recommends 10-15% overinflation.

 

I’ve used Michelin airstop tubes and Condor tires for years with no problems.

 

Nitrogen  http://www.getnitrogen.org/sub.php?view=getTheFacts&subpage=betterthanair

[MB65E]

Man- I'm sorry I brought up N2. It's all my fault!

Everyone relax and go fly!

-Matt

[Marauder]

Man- I'm sorry I brought up N2. It's all my fault!

Everyone relax and go fly!

-Matt

Yeah, I'll second that! Or else... I'll fill this thread with the most wholesome looking women on this planet. There won't be ANY room left for this banter afterwards!!

Sent from my iPad using Tapatalk

[MyNameIsNobody]

Now THAT was funny...

Strange, not Ha, ha...

Not cool on sending links of sites the person may or may not enjoy...

Nice little mushroom cloud.

Let go of my Ego...s...

[Hank]

Its not the gases there Hank, it's the dry nitrogen air. Magically to you , just means you don't understand it not that it isn't so………..Some folks actually mentioned to me this was a blue collar site. Thanks for verifying this folks, I'll continue to let the professionals that I can afford to, service my aircraft. Ever heard of 100% aviators oxygen? Magic shit also that they pull from the atmosphere. Also glad to see your sarcasm for the USAF, of course they know nothing about aircraft………..or not at least as much as Hank. And which part of the air compressor filters out water??????????

The part of my compressor, and the compressors at work that provide dry air used to manufacture medical devices, is a filter on the outside, immediately down from the tank. It's actually not part of the compressor, it's an optional accessory, but a very nice one. Cheaper than a nitrogen separator, too.

This "blue collar" site is full of doctors, engineers, college professors (including USMA and USNA) and other professionals; I guess we don't accept dogma very well, preferring to have explanations. I certainly will never say, "yes sir, your explanation is correct because you outrank me." I was raised in the Marine Corps, so put your disrespect for the military where the sun don't shine. As a special favor, I won't ask you to fold it til it's all points first.

I'm out of here. Do we have an "ignore" feature? This guy certainly belongs on mine. He will be the first one I've had to do so with.

[MyNameIsNobody]

I happen to be very blue collar. I like the color blue.

Words here do still have value and define "who" you are...

Arrogance has a foul smell.

This thread stinks...

[jetdriven]

Its not the gases there Hank, it's the dry nitrogen air. Magically to you , just means you don't understand it not that it isn't so………..Some folks actually mentioned to me this was a blue collar site. Thanks for verifying this folks, I'll continue to let the professionals that I can afford to, service my aircraft. Ever heard of 100% aviators oxygen? Magic shit also that they pull from the atmosphere. Also glad to see your sarcasm for the USAF, of course they know nothing about aircraft………..or not at least as much as Hank. And which part of the air compressor filters out water?????????? 

 

I did some reading and it looks like two competing versions of the truth.

 

One told by people who sell nitrogen.   Oxygen leaks out faster than pure N2O, and the oxygen in the air combined with water vapor causes corrosion inside the wheels.   And degrades the inside of the tire.  NO mention given of the corrosion on the outside of the wheels caused by the same oxygen, plus real actual water, salt, industrial pollution, acid rain, etc.  Or of the attack the outside of the tire bears from te same oxygen plus UV light. Here's another thing, if the oxygen component continually leaks out, wouldnt you eventually have a nearly pure atmosphere of nitrogen inside the tire?

And the other version, which says that the PSI change from nitrogen in high performance aircraft tires only changes a couple PSI with a hundred degree difference in tire pressure.   And it cannot support combustion, That and it does leak, albiet a little less slowly through the rubber.

 

So it seems if its available, use it, But otherwise, on tires like this, why bother.

[gsxrpilot]

Yes, the "Ignore Pref" is alive and well here.  In the Internet Forum business, Eagle2 is what we call a Troll. This is the purpose of the Ignore feature.

[StinkBug]

I'm sorry Andy, disrespectful to WHO????????? Did you read the entire thread, if so you'll see I was respectful and trying to be helpful.

 

 

Umm I think it was that whole part where you started calling people idiots after touting Nitrogen as being so great for saving wheels from corrosion. Then continuing to act like a complete asshat when people pointed out that the air (or nitrogen) in our tires never touches the wheels since we use inner tubes. Sorry man, but your superior arrogant attitude came shining through like a spotlight, and it's not doing you any favors.

[Mooneymite]

Gentlemen (and Ladies!), I think you are being a little tough on a very young member of Mooneyspace.

 

If you will take the time to look at Eagle2's profile, you will see that he is only a little over a year old.

 

He has every right to act childish.

 

Please, give him a break.

 

Maybe after a few years, when he gets through kindergarten, he will be able to fill in some of the details of his aviation experience, so we can judge him more accurately.