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Old 05-04-2013, 12:59 AM   #1
darranwil
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Forgot... Nitrogen?

Anyone running nitrogen? Worth it?

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Old 05-04-2013, 01:20 AM   #2
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My understanding may not be correct, but this is how I see it:

When sport bike tires are cold they run less pressure and move around more than fully inflated ones. This movement causes a temperature increase and also makes the surface more "sticky." With temperature also comes pressure. With the surface being warm, sticky and soft you want the pressure to build. I think this is where "cold tear" comes from. By running Nitrogen, you wouldn't experience this pressure differential with the temperature. In short, while it may be beneficial for car tires, our tires work differently and it doesn't really help us.

Again, this is only my understanding of how it works so I may be way off. Anyone else care to correct/confirm my theory?
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Old 05-04-2013, 01:35 AM   #3
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Quote:
Originally Posted by Wawazat?! View Post
My understanding may not be correct, but this is how I see it:

When sport bike tires are cold they run less pressure and move around more than fully inflated ones. This movement causes a temperature increase and also makes the surface more "sticky." With temperature also comes pressure. With the surface being warm, sticky and soft you want the pressure to build. I think this is where "cold tear" comes from. By running Nitrogen, you wouldn't experience this pressure differential with the temperature. In short, while it may be beneficial for car tires, our tires work differently and it doesn't really help us.

Again, this is only my understanding of how it works so I may be way off. Anyone else care to correct/confirm my theory?
From what I read the nitrogen is drier than most air filled since most places don't have adequate dryers for their compressors. Nitrogen running 97% pure or higher. Drier air means less expansion so you can get less of an expansion range. Can run higher psi but it expands less.

Anyone?

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Old 05-04-2013, 01:53 AM   #4
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Correct. The moisture in air is what causes fluctuations in tire psi. Nitrogen has a - 40 dew point and so whatever psi you set your tire, it'll stay within a very tight tolerance of that psi
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Old 05-04-2013, 04:17 AM   #5
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they did a review of this on car show 5th gear, they only had a sample of 1, so this isn't always the case BUT the tire shop that put the nitrogen in, had as much water as a reg. air station which defeated the whole purpose of putting in nitrogen in the first place.

so i you can find a shop that puts in a PURE nitrogen it wasn't bad.

older tires leak more air out then newer
their nitrogen gained alot more psi because of the mix of nitrogen and water vs just a reg. air pump
his times on the track were the same for both
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Old 05-04-2013, 06:13 AM   #6
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The air we breathe is 70 some odd % nitrogen.
The key is to have a dryer. Without that you'll still have moisture, which is the key. It's a waste of time imo on a motorcycle tire due to the low volume of air in the tires comparative to say a car tire.
Tires/valve stems are porous, so over time you'll still get some moisture in the tire.
If you were usng race tires that get changed frequently and needed to be exact on your pressure than there may be a benefit, but for street riders it's more hype than reality.
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Old 05-04-2013, 07:26 AM   #7
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Old 05-06-2013, 09:18 AM   #8
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Old 05-06-2013, 09:22 AM   #9
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Quote:
Originally Posted by darranwil View Post
From what I read the nitrogen is drier than most air filled since most places don't have adequate dryers for their compressors. Nitrogen running 97% pure or higher. Drier air means less expansion so you can get less of an expansion range. Can run higher psi but it expands less.

Anyone?

rev
I don't even have a dryer on my compressor.

Forgot... Nitrogen?
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Old 05-06-2013, 11:23 AM   #10
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Lately, I have been receiving questions in the forums, as well as on the phone about running pure nitrogen in tires. Unfortunately, there are many shops out there that are overstating (and overcharging) for this service. Below are some common facts and myths to consider before filling your tires with nitrogen.

Fact: Air that we breath and put into our tires is roughly 78% nitrogen.

This is correct. Tires are typically inflated with air that's a combination of approximately 78% nitrogen, 21% oxygen and 1% miscellaneous gases.

Myth: Using pure nitrogen in tires will increase fuel economy.

A tire's fuel economy is not affected by the type of air inside the tire. Lower air pressures can lead to lower fuel economy and nitrogen is a gas that is still affected by changes in ambient temperatures (about one psi for every 10F Fahrenheit). Using the correct inflation pressure not only provides the appropriate load capacity, it also contributes to the vehicle's fuel economy.

Fact: Pure nitrogen-filled tires will lose slightly less air over time.

It is true that nitrogen does not escape a tire's airtight seal quite as easily as oxygen (most air-filled tires will lose about 1/2 to 1 psi per month), so a pure nitrogen-filled tire should lose less air pressure over time. Nitrogen reduces the lost of tire pressure due to permeation through rubber over time by approximately one-third. This does help maintain the vehicle's tire pressure a little longer, but does not eliminate the need for monthly checks of tire pressure.

Myth: Pure nitrogen-filled tires will run cooler.

This is another myth that is tied to the assumption that consumers will not check their air pressures often enough. Simply having a different type of gas in your tires will not make them run cooler.

Myth: Nitrogen-filled tires last longer.

The type of air inside a properly inflated tire does not affect the tire's tread life. While there is evidence to suggest that nitrogen-filled tires will have less oxidation to the inner liner of the tire, keep in mind that a tire's inner liner was specifically designed to handle standard air. There is no proof of any tire failing due to rubber oxidation caused from the tires having standard air inside them.

Conclusion:

The only benefit from running pure nitrogen in tires is the increased air retention (slower loss of air out of the tires over time). A tire that is normally maintained with the proper air pressure will perform exactly like a tire with a pure nitrogen fill. If you can get a pure nitrogen fill for free, there is no harm in doing so but very little (if any) benefit from it.

http://blog.tirerack.com/blog/make-d...s-and-myths-v1
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Old 05-06-2013, 12:42 PM   #11
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Good stuff Bevo. I'm sure in Texas, oxidation on the inside of the tire is the last of our concerns.


ok, how about this one.

Foam Filled Tires?
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Old 05-06-2013, 12:55 PM   #12
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Quote:
Originally Posted by darranwil View Post
Good stuff Bevo. I'm sure in Texas, oxidation on the inside of the tire is the last of our concerns.


ok, how about this one.

Foam Filled Tires?
Bike tires wear so fast probably not cost effective to use anything but air
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Old 05-06-2013, 01:05 PM   #13
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Quote:
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Bike tires wear so fast probably not cost effective to use anything but air
well foam filled tires wear faster than air inflated but can run flat and don't blow out... why I asking. Been big with big rigs for a while and just started moving into the car market..
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Old 05-07-2013, 04:57 AM   #14
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Quote:
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well foam filled tires wear faster than air inflated but can run flat and don't blow out... why I asking. Been big with big rigs for a while and just started moving into the car market..
I doubt a bike tire manufacturer would recommend using foam
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Old 05-07-2013, 09:26 AM   #15
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I don't know the ins and outs of all the above items, but I believe I saw the GrandAm race teams back in March using Nitrogen bottles for their tires and maybe even their air tools.
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Old 05-07-2013, 10:09 AM   #16
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I'm switching to Helium its supposed to reduce the curb weight by as much as 10-20 pounds by slightly trying to lifting the bike off the ground.
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Old 05-07-2013, 01:45 PM   #17
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I'm switching to Helium its supposed to reduce the curb weight by as much as 10-20 pounds by slightly trying to lifting the bike off the ground.
Dont half- it, if you're going for weight savings then go hydrogen.
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Old 05-07-2013, 02:35 PM   #18
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Dont half- it, if you're going for weight savings then go hydrogen.
Now thats just stupid, and dangerous!
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yeah. I thought it'd be like riding with a condescending rossi.
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