The simple air dryers for compressors are not even close to Nitrogen. Unless you buy an air dryer made specifically for race tires which tend to be expensive and need to be recharged periodically you are wasting your time. Drain the tank on your compressor sometime and see how much water is in it, you'll be amazed. Nitrogen is cheap and easy but you do need to purge your tires 2 or 3 times and if you take a small air pig trackside you will need to purge it several times as well.
Dave Pomfret -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Joe Palmer Sent: Sunday, August 27, 2006 8:04 PM To: [email protected] Subject: Re: [F500] tires How well would putting one of those "air dryers" on my compressor work for the same purposes? Better than regular air? not as good as nitrogen? Thanks. Shiny Side Up, Joe Palmer TX Novakar #56 ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, August 26, 2006 8:53 PM Subject: Re: [F500] tires > In a message dated 8/26/2006 8:11:09 P.M. Eastern Daylight Time, > [EMAIL PROTECTED] writes: > > Then, I wonder what the exact mechanisim is on using Nitrogen to have less > pressure change and less leakage. > > Any gas will change pressure over temperature. Why would pure N2 change less > than an air mix which is about 2/3 Nitrogen anyway? Or is it the lower > water H2O vapor content in N2? > > As far as leakage, the gas molecules would have to be larger in order to > leak out less easily. > > > > It's a combination of the effects you mention. > > 1 - Water vapor - any dry gas will work better than regular air with water > vapor. As the vapor condenses, the pressure drops, and as the temperature > rises, the pressure increases radically. Since there is a state change > involved, it doesn't follow the ideal gas law (PV=nRT) > > 2 - Nitrogen is effectively inert for our purposes, while O2 and H2 are > reactive, along with some of the other oddball compounds in generic air. > > 3 - N2 is a larger molecule than H2, CO, or He. ________________________________ FormulaCar Magazine - A Proud Supporter of Formula 500 The Official Publication of Junior Formula Car Racing Subscribe Today! www.formulacarmag.com or 519-624-2003 _________________________________ _______________________________________________ F500 mailing list - [email protected] To unsubscribe or change options please visit: http://f500.org/mailman/listinfo/f500 *** Please, DO NOT send unsubscribe requests to the mailing list! ***
