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oldcorollas Forums Junkie Location: Kita-Ku, Sapporo, Japan Registered: January 2003	Re: Nitrogen filling for tryes Thu, 14 October 2004 08:18 thing that worries me abotu all this nitrogen hoohah, is that... tyre pressure is what? say 30 psi (for convenience) = 2bar.. so inside the tyre is 3 times the volume (at 1atm pressure) unless these tyres are fitted and filled in an evacuated then nitrogen filled chamber, then when the tyres are first inflated, they will contain 1/3rd air. this is not good (if we are to believe the hype) ideally, you woudl evacuate the tyre prior to filling with N2, but this is not possible as the tyre will unseal. what you could do is to fill and purge for a few times... each time you fill and release, you will halve the amount of air in there.. for my uni experiments, with a furnace tube and flowing gas, it was generally accepted that you need to flow a minimum of 10 times the volume of the chamber to reduce contamination... i would run 15 times volume as i needed very low oxygen atmospheres (like 10^-20 or less...) eg, 3L reaction chamber, flow 45L of gas at around 500mls/min = 90 minutes purging time. so anyway... i wonder how many time they purge the tyres so they are truly air free?? other problem ppl haven't mentioned is oil contamination from compressors.. not a prob with high grade bottled air (ie 4 or 5 9's) Cya, Stewart [Report message to a moderator]

	Subject	Poster	Date
	Nitrogen filling for tryes	CamryMan	Thu, 05 June 2003 03:57
	Re: Nitrogen filling for tryes	Cool1	Thu, 05 June 2003 04:08
	Re: Nitrogen filling for tryes	Apollo	Sat, 07 June 2003 02:13
	Re: Nitrogen filling for tryes	dylusion	Thu, 05 June 2003 04:13
	Re: Nitrogen filling for tryes	dylusion	Thu, 05 June 2003 05:46
	Re: Nitrogen filling for tryes	IRA11Y	Thu, 05 June 2003 05:54
	Re: Nitrogen filling for tryes	Youngy	Thu, 05 June 2003 05:37
	Re: Nitrogen filling for tryes	Norbie	Thu, 05 June 2003 05:40
	Re: Nitrogen filling for tryes	toycelica77	Thu, 05 June 2003 06:14
	Re: Nitrogen filling for tryes	Cool1	Thu, 05 June 2003 06:45
	Re: Nitrogen filling for tryes	CamryMan	Thu, 05 June 2003 06:58
	Re: Nitrogen filling for tryes	Laurie D	Thu, 05 June 2003 07:16
	Re: Nitrogen filling for tryes	Cool1	Thu, 05 June 2003 07:36
	Re: Nitrogen filling for tryes	Laurie D	Thu, 05 June 2003 08:31
	Re: Nitrogen filling for tryes	Blown86	Thu, 05 June 2003 09:47
	Re: Nitrogen filling for tryes	Norbie	Thu, 05 June 2003 10:14
	Re: Nitrogen filling for tryes	manipulate	Thu, 05 June 2003 10:21
	Re: Nitrogen filling for tryes	draven	Thu, 05 June 2003 10:23
	Re: Nitrogen filling for tryes	SPEEDCORE	Thu, 05 June 2003 10:41
	Re: Nitrogen filling for tryes	draven	Thu, 05 June 2003 10:43
	Re: Nitrogen filling for tryes	draven	Thu, 05 June 2003 10:45
	Re: Nitrogen filling for tryes	Youngy	Fri, 06 June 2003 12:47
	Re: Nitrogen filling for tryes	Cool1	Sat, 07 June 2003 03:25
	Re: Nitrogen filling for tryes	Laurie D	Sat, 07 June 2003 04:30
	Re: Nitrogen filling for tryes	Blown86	Sat, 07 June 2003 10:01
	Re: Nitrogen filling for tryes	Alchemist	Sat, 07 June 2003 10:22
	Re: Nitrogen filling for tryes	Cyber-punk	Sat, 07 June 2003 13:08
	Re: Nitrogen filling for tryes	Sam	Sat, 07 June 2003 14:40
	Re: Nitrogen filling for tryes	boudan	Sun, 08 June 2003 03:42
	Re: Nitrogen filling for tryes	RA60_Celica	Sun, 08 June 2003 08:56
	Re: Nitrogen filling for tryes	boudan	Sun, 08 June 2003 13:11
	Re: Nitrogen filling for tryes	Cool1	Sun, 08 June 2003 13:43
	Re: Nitrogen filling for tryes	boudan	Sun, 08 June 2003 13:45
	Re: Nitrogen filling for tryes	Cool1	Sun, 08 June 2003 13:48
	Re: Nitrogen filling for tryes	SUPRAGTE	Mon, 09 June 2003 09:51
	Re: Nitrogen filling for tryes	Cool1	Mon, 09 June 2003 09:57
	Re: Nitrogen filling for tryes	scrote	Tue, 10 June 2003 07:42
	Re: Nitrogen filling for tryes	Norbie	Tue, 10 June 2003 13:39
	Re: Nitrogen filling for tryes	boudan	Tue, 10 June 2003 13:43
	Re: Nitrogen filling for tryes	Bugman	Tue, 10 June 2003 14:04
	Re: Nitrogen filling for tryes	boudan	Tue, 10 June 2003 14:09
	Re: Nitrogen filling for tryes	Norbie	Tue, 10 June 2003 14:07
	Re: Nitrogen filling for tryes	boudan	Tue, 10 June 2003 14:11
	Re: Nitrogen filling for tryes	Nitrogen Fill	Tue, 12 October 2004 12:36
	Re: Nitrogen filling for tryes	oldcorollas	Wed, 13 October 2004 00:15
	Re: Nitrogen filling for tryes	draven	Tue, 12 October 2004 13:11
	Re: Nitrogen filling for tryes	Nitrogen Fill	Tue, 12 October 2004 13:14
	Re: Nitrogen filling for tryes	Mookie	Tue, 12 October 2004 13:13
	Re: Nitrogen filling for tryes	Corona RT142	Tue, 12 October 2004 23:50
	Re: Nitrogen filling for tryes	Norbie	Tue, 12 October 2004 23:57
	Re: Nitrogen filling for tryes	-NiCkeL-	Wed, 13 October 2004 00:17
	Re: Nitrogen filling for tryes	Nitrogen Fill	Wed, 13 October 2004 00:18
	Re: Nitrogen filling for tryes	Nitrogen Fill	Wed, 13 October 2004 00:23
	Re: Nitrogen filling for tryes	Norbie	Wed, 13 October 2004 04:35
	Re: Nitrogen filling for tryes	Nitrogen Fill	Wed, 13 October 2004 05:17
	Re: Nitrogen filling for tryes	gianttomato	Wed, 13 October 2004 05:41
	Re: Nitrogen filling for tryes	Corona RT142	Wed, 13 October 2004 04:38
	Re: Nitrogen filling for tryes	gianttomato	Wed, 13 October 2004 05:16
	Re: Nitrogen filling for tryes	MR 1JZ	Wed, 13 October 2004 05:05
	Re: Nitrogen filling for tryes	Corona RT142	Wed, 13 October 2004 05:10
	Re: Nitrogen filling for tryes	MR 1JZ	Wed, 13 October 2004 05:34
	Re: Nitrogen filling for tryes	Corona RT142	Wed, 13 October 2004 05:18
	Re: Nitrogen filling for tryes	Corona RT142	Wed, 13 October 2004 05:37
	Re: Nitrogen filling for tryes	stumpy	Wed, 13 October 2004 05:43
	Re: Nitrogen filling for tryes	stumpy	Wed, 13 October 2004 05:50
	Re: Nitrogen filling for tryes	Corona RT142	Wed, 13 October 2004 05:51
	Re: Nitrogen filling for tryes	Norbie	Thu, 14 October 2004 02:29
	Re: Nitrogen filling for tryes	ke382TG	Thu, 14 October 2004 02:59
	Re: Nitrogen filling for tryes	gianttomato	Thu, 14 October 2004 03:29
	Re: Nitrogen filling for tryes	ke382TG	Thu, 14 October 2004 03:44
	Re: Nitrogen filling for tryes	gianttomato	Thu, 14 October 2004 04:03
	Re: Nitrogen filling for tryes	ed_ma61	Thu, 14 October 2004 04:26
	Re: Nitrogen filling for tryes	gianttomato	Thu, 14 October 2004 04:39
	Re: Nitrogen filling for tryes	Cool1	Thu, 14 October 2004 04:50
	Re: Nitrogen filling for tryes	ke382TG	Thu, 14 October 2004 05:07
	Re: Nitrogen filling for tryes	gianttomato	Thu, 14 October 2004 05:11
	Re: Nitrogen filling for tryes	ke382TG	Thu, 14 October 2004 05:16
	Re: Nitrogen filling for tryes	dcleyne	Thu, 14 October 2004 05:20
	Re: Nitrogen filling for tryes	ed_ma61	Thu, 14 October 2004 07:28
	Re: Nitrogen filling for tryes	oldcorollas	Thu, 14 October 2004 08:18
	Re: Nitrogen filling for tryes	gianttomato	Thu, 14 October 2004 08:44
	Re: Nitrogen filling for tryes	Supralux	Thu, 14 October 2004 09:41
	Re: Nitrogen filling for tryes	stumpy	Thu, 14 October 2004 09:58
	Re: Nitrogen filling for tryes	bubbles	Thu, 14 October 2004 10:01
	Re: Nitrogen filling for tryes	Norbie	Sun, 17 October 2004 07:06

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