Dirkitech Posted October 30, 2014 Posted October 30, 2014 It is put into car tyres.If there was no benefit why the Hell would they do it ?i am 100% aware that there are some benefits to having nitrogen in car tires. What i say in my post says is to not work off of assumptions or hearsay. If you are really interested in doing it and want to know whether you will actually benefit having nitrogen vs air vs co2, test it and get numbers that give you a real result. I'm sure many, maybe especially weight weenies, would honour for tests like these that give clarification on peak performance.
V12man Posted October 30, 2014 Posted October 30, 2014 It is put into car tyres.If there was no benefit why the Hell would they do it ?Because you will pay for it.... they get a benefit... There is a technical benefit in that Nitrogen is usually dryer than air - so pressure variations are not so great with changes in temperature inside the tire - this is of little consequence at road car tire temperatures, but at race car tire temps it make it wasier to manage pressure changes - BUT..... don't waste your money, and if you do, then make sure the tire is completely dry inside before refilling it from scratch with nitrogen - use one of these... http://www.intercompracing.com/tire-drying-purging-system-p-158-l-en.html PS - don't expect a return on investment on that device... EVER.... unless you race for big money.....
NukeproofPeanut Posted October 30, 2014 Posted October 30, 2014 It is put into car tyres. If there was no benefit why the Hell would they do it ? So TWT can charge you an extra R80 when replacing your tyres!!
MTBeer Posted October 30, 2014 Posted October 30, 2014 It is put into car tyres.If there was no benefit why the Hell would they do it ?people by bottled water over tap water when there is no benefit (talking Cape Town suburbs water).
SwissVan Posted October 30, 2014 Posted October 30, 2014 Because you will pay for it.... they get a benefit... There is a technical benefit in that Nitrogen is usually dryer than air - so pressure variations are not so great with changes in temperature inside the tire - this is of little consequence at road car tire temperatures, but at race car tire temps it make it wasier to manage pressure changes - BUT..... don't waste your money, and if you do, then make sure the tire is completely dry inside before refilling it from scratch with nitrogen - use one of these... http://www.intercompracing.com/tire-drying-purging-system-p-158-l-en.html PS - don't expect a return on investment on that device... EVER.... unless you race for big money..... Which is why aircraft tyres (usually those on large high flying aircraft > 5700kg) are supposed to be inflated with dry air Nitrogen....
V12man Posted October 30, 2014 Posted October 30, 2014 Which is why aircraft tyres (usually those on large high flying aircraft > 5700kg) are supposed to be inflated with dry air Nitrogen....I guess that landing one of those big toys heats up those tires pretty quickly - as does the speed some of them get to on the runway - it would make a certain amount of sense to me to use nitrogen..... stops them icing inside the tire.... - remember - even in space, the maximum additional difference in air pressure between inside and outside the tire is only 1 bar compared to sea level (not a lot compared to the tire pressure they run - 175 - 220 psi.... according to wikipedia... - that's f..ing hard....)
SwissVan Posted October 30, 2014 Posted October 30, 2014 I guess that landing one of those big toys heats up those tires pretty quickly - as does the speed some of them get to on the runway - it would make a certain amount of sense to me to use nitrogen..... stops them icing inside the tire.... - remember - even in space, the maximum additional difference in air pressure between inside and outside the tire is only 1 bar compared to sea level (not a lot compared to the tire pressure they run - 175 - 220 psi.... according to wikipedia... - that's f..ing hard....) The heat generated during taxi and takeoff and then the subsequent rapid cooling down at altitude will create the oppurtunity for condensation and freezing as the tyres are at ambient temprature not cabin temp. I was taught this as an appy and that the impurities in shop air (compressor generated) could cause an explosion under certain circumstances if the tyres overheated. Also with those high pressures (some business jets tyres are small but can be higher than 220 psi) its difficult to obtain that pressure from a normal compressor generated shop air. Nitrogen cyclinders are easy as they typically have over 3000 psi each in them...just make sure you have a way of controlling that pressure...people have been killed while pumping up tyres with that pressure unregulated.
Ryan100 Posted October 30, 2014 Posted October 30, 2014 In F1 etc where the tyre run up to massive temperatures running nitrogen is more predictable than air. They know exactly what the pressure will be when the tyres get up to temperature. The big advantage for cars running nitrogen is that you get a cool green valve cap and tell your mates you are running the same stuff in your tyres as F1 drivers. I seriously doubt that you will be able to get any difference on your car running nitrogen, the tyres just dont get hot enough. The reason that they use CO2 bombs and not some other gas is the pressure at which CO2 becomes a solid (dry ice) is fairly low, that means that you dont need a big heavy bottle carrying your gas. Then CO2 skips the liquid phase and goes to solid from a gas. You get a lot more volume of CO2 gas in that little bottle. CO2 is apparenly not the best thing to put in your tyres but because its so easy to make little bombs to carry the stuff its the easiest to take with.
IH8MUD Posted October 30, 2014 Posted October 30, 2014 It is put into car tyres.If there was no benefit why the Hell would they do it ?Yes it goes into car tires, though the only ones that really benefit from this is high performance applications. The normal man one the street is just conned by Tiger Wheel and Tire sales.None of us on a bicycle sure as HELL do not operate at the same operating parameters as cars and plains.If it had benefit in the cycling world, Specialized would sell it to you in a bottle with "S-Works" printed on it and applied for patent rights to Nitrogen and sue NASCAR and F1 for using it. But after everyone give their opinion (some with technical explanation) to the question you asked, and you still feel the need, go for it.Never underestimate the placebo effect.
Stretch Posted October 30, 2014 Posted October 30, 2014 Do you get to use green valve caps if you use it in your tyres?
RichieT Posted October 30, 2014 Posted October 30, 2014 How about hydrogen... then you'll really fly :-)
MrJacques Posted October 30, 2014 Posted October 30, 2014 How about hydrogen... then you'll really fly :-) That could lead to some explosive acceleration
johannrissik Posted October 30, 2014 Posted October 30, 2014 The main benefit of having nitrogen in your tyres is that you get free green valve caps.
Gas Posted October 30, 2014 Posted October 30, 2014 In F1 etc where the tyre run up to massive temperatures running nitrogen is more predictable than air. They know exactly what the pressure will be when the tyres get up to temperature. The big advantage for cars running nitrogen is that you get a cool green valve cap and tell your mates you are running the same stuff in your tyres as F1 drivers. I seriously doubt that you will be able to get any difference on your car running nitrogen, the tyres just dont get hot enough. The reason that they use CO2 bombs and not some other gas is the pressure at which CO2 becomes a solid (dry ice) is fairly low, that means that you dont need a big heavy bottle carrying your gas. Then CO2 skips the liquid phase and goes to solid from a gas. You get a lot more volume of CO2 gas in that little bottle. CO2 is apparenly not the best thing to put in your tyres but because its so easy to make little bombs to carry the stuff its the easiest to take with.Good CO2 explanation Edit: plus the boiling point of the gas it taken into account
JXV Posted October 30, 2014 Posted October 30, 2014 Good CO2 explanation Except the solid part is wrong. At normal ambient temperatures the CO2 in your bombs is liquid and it flashes to vapour when you release it into your tyres. But yes...because it liquefies you can store much more CO2 than air in a bomb at fairly moderate pressures.
Gas Posted October 30, 2014 Posted October 30, 2014 Except the solid part is wrong. At normal ambient temperatures the CO2 in your bombs is liquid and it flashes to vapour when you release it into your tyres. But yes...because it liquefies you can store much more CO2 than air in a bomb at fairly moderate pressures.CO2 becomes a solid (dry ice) at about 7bar. At ambient temperature it will go from solid to gas phase. Would love to see liquid CO2 at ambient temperature as the boiling point is -78'C or so.The CO2 in the cartridge is compressed to about 50bar vapour (gas). Off topic but good info
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