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Post by samiam on Dec 20, 2012 9:58:36 GMT -6
I have seen some people mix air and nitrogen filled tires on their cars. What was the purpose of this?
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Post by alanp on Dec 20, 2012 17:18:04 GMT -6
nitrogen pressure more stable over a wider temperature range we used it back when we ran asphault to be effective you need to pull a vacume like doing AC service to remove moisture. the moisture in shop air causes a greater pressure increase when hot
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Post by samiam on Dec 21, 2012 10:38:39 GMT -6
I guess my question was why do they put some nitrogen in some tires, rather than put it in all the tires?
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Post by mod10c on Dec 22, 2012 12:44:45 GMT -6
pressure will build up in tires filled with air but not nitrogen if done correctly as alanp said above. We used to use nitrogen in the left rear and air in the right rear in our late model years ago to tighten it up as the feature went on. Sometimes it worked good sometimes not.
Hope it helped. Good racing.
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Post by lizardracing on Dec 22, 2012 23:46:17 GMT -6
Some Automotive repair shops around here are plugging nitrogen fills when you buy tires with free pressure checks. The Nitrogen molecules are bigger and so they don't permeate the tires construction as easily and won't leak as much over time just like a party balloon does. To me the free checks are good excuses to get your car inspected for other problems you'll likely pay them to fix.
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Post by flipflopoo1oo on Mar 10, 2014 23:11:55 GMT -6
It is most use-full in the rt. rear as to the heat building up and changing set up if not using air to an advantage of your set-up to loosen the car on the track until it dries and airs it's 2 lbs to tighten the car! Some set-ups will just keep building air but 2 lbs should be correct if the car is rear steering properly! Just another tire with Nitrogen for the right rear gives you another set-up choice depending on the track surface and if more or less roll-out is needed by air pressure! You can run lower air for more bite area(traction)or change bite location with-out changing roll-out, to steer or not to steer and even out traction as to a push! It lets you cover all aspects of the ills in set-ups by understanding that you can heat or not as well to control compounds ten laps into a race and not get a push from the changes! High horse mods tires can be even more tricky if it is mixed, grooved, old or pre-run scuffs! Some allow 2 compounds rt or left side! This is even harder than I remembered from 7 years of 2 cars 2-3 nights a week on the road!
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bc
Pit Crew
Posts: 3
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Post by bc on Apr 14, 2015 22:45:18 GMT -6
Something for y'all to consider. Regular compressed air is 79% Nitrogen.
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Post by flipflopoo1oo on Apr 15, 2015 4:21:54 GMT -6
At what temp and compression is this happening and with what amount of static energy applied is the thing in question--- water is mostly Hydrogen but so compressed by nature it has to be subjected to other forces to be released! Moisture is bad to have inside a tire so does Nitrogen just absorb and convert like either! Best make sure your right rear has and condenses none inside to expand and convert to build unwanted pressure or use the change as an important part of your set-up to tighten the car as run!!!---LOL---
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