gstallons Posted May 18, 2009 Posted May 18, 2009 We were at the European Bike Rallye in Burkesville,Ky. this weekend. One of the vendors was "selling" nitrogen tire fills. At $5.00 per tire this sounded pretty good, so in went the new stuff. I had read a lot about this for passenger cars and was already aware of the benefits. Stable pressure at all temps, very little leakdown because of the size of the N molecules,etc. How many of you are running nitrogen in your tires? What are your thoughts?
GuzziMoto Posted May 18, 2009 Posted May 18, 2009 We were at the European Bike Rallye in Burkesville,Ky. this weekend. One of the vendors was "selling" nitrogen tire fills. At $5.00 per tire this sounded pretty good, so in went the new stuff. I had read a lot about this for passenger cars and was already aware of the benefits. Stable pressure at all temps, very little leakdown because of the size of the N molecules,etc. How many of you are running nitrogen in your tires? What are your thoughts? I am not running it and I see no real benefits for road use. Even at the lower end of racing I see no benefits. Other then the cost it has no downsides/drawbacks, but in my opinion it does little more then lighten your wallet. But if you believe there's a benefit and running it makes you feel better then by all means do it. I'll spend my money on something else.
raz Posted May 18, 2009 Posted May 18, 2009 I use 78% nitrogen, 21% oxygen, and 1% argon. Maybe not the best but it is cheap for sure Seriously, I think it's like those Iridium spark plugs. I tried those. They had one big advantage: They last forever. But they are very expensive and I don't really see the point as they won't make the bike run better. If I run across a 5€ Nitrogen offer I might try it too but I expect similar conclusions.
gstallons Posted May 18, 2009 Author Posted May 18, 2009 That's what the smarty said to me in Cape Girardeau,Mo. when he installed the tires on my wheels.
Dan M Posted May 18, 2009 Posted May 18, 2009 I use 78% nitrogen, 21% oxygen, and 1% argon. Maybe not the best but it is cheap for sure I'm with Raz. That mix works well in my tires, is available everywhere and it's free.
Guest ratchethack Posted May 18, 2009 Posted May 18, 2009 I use 78% nitrogen, 21% oxygen, and 1% argon. Maybe not the best but it is cheap for sure That's funny. I'm running the same thing, with .038% CO2 (a life-giving nutrient and essential requirement for all green plants, recently officially classified by our government as a pollutant ), H20 vapor (NOT YET classified a pollutant by government grant chaser/political hacks, but 10X the "harmful greenhouse gas" that CO2 is ), and traces of neon, xenon, helium, hydrogen, and krypton. Works a treat in all kinds of tires -- even square ones. NOTE: It tends to be less effective if you drill holes in your tires, Dave.
Cliff Posted May 18, 2009 Posted May 18, 2009 Given the supposed leakage of the lighter stuff, I'm probably up to 85% nitrogen.
Guest ratchethack Posted May 18, 2009 Posted May 18, 2009 Good one, Cliff. Never considered it, but the older the tire, the higher the N2 concentration. Why, by 10K miles on a Z6 front, it must be up around 90%.
jrt Posted May 18, 2009 Posted May 18, 2009 Ya'll talking about the law of effusion again? Effusion is the passage of gas molecules through a very small hole. It is also called Graham's law- the rate of effusion of a gas is inversely proportional to the square root of its molecular mass. H or He effuses more quickly than N2 or Ar or Kr. With a rubber tire, it's a bit more complicated because some gasses are actually permeable through the rubber (oxygen). FWIW, it's Graham's law that is used to enrich uranium. Also, FWIW, filling your tires with purified nitrogen is a waste of your money and our limited energy reserves. Filling your tires with helium is wasting a very limited natural resource and should be considered criminal. A bit excessive? Perhaps, but it illustrates the complete lack of benefit from this exercise.
gstallons Posted May 18, 2009 Author Posted May 18, 2009 I don't suppose I should tell the part about the nitrogen in my tires helping my E.D. ?
DeBenGuzzi Posted May 19, 2009 Posted May 19, 2009 SEEE this is why I love you guys, you see something and go, O rly now? question the new thing with old sound knowledge is a true sign of a guzzista, we add the sarcasm for free I would have added my own smart ass comment but everyone beat me to it. hmm anyone thought of using argon? its cheap and I bet most of you have it sitting there doing nothing connected to your cutting torches
Murray Posted May 19, 2009 Posted May 19, 2009 I've got a few bridges in stock can i intrest you in one?
raz Posted May 19, 2009 Posted May 19, 2009 question the new thing with old sound knowledge is a true sign of a guzzista, we add the sarcasm for free Sarcasm? We're only being helpful. Nitrogen adds to your unsprung weight!
Jap In OZ Posted May 19, 2009 Posted May 19, 2009 I have to say; the last time i had a new set of tyres (diablos, so what do you guys reckon about those?) fitted the guys offered the N2 I explained that they will end up like that anyway (as per Cliffs comments) so they filled the rear with N2 and the front with the normal stuff! IT DOES WORK (maybe only on the diablo)!!! if you are a bit lazy like me and don't check the pressures to often it seems to work, pressure in the rear stayed a lott more constant.. Ciao Jasper
jrt Posted May 19, 2009 Posted May 19, 2009 You had a leak on your front tire (tyre) valve. Simple as that.
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