jammy Posted November 11, 2007 Report Share Posted November 11, 2007 whilst on the hunt for tyre's,the place's i went to were advising me to go this way is this worth the cost and will it really stay at correct pressure for longer ????? Quote Link to comment Share on other sites More sharing options...
Tony Posted November 11, 2007 Report Share Posted November 11, 2007 It is true the molecules are less susceptible to allow air loss due to their size, but the true promise of Nitrogen was reduced influence of heat and the ability to resist expansion...... Sadly this promise is false so i fail to validate the necessity of dry Nitrogen inflation now. Quote Link to comment Share on other sites More sharing options...
jammy Posted November 11, 2007 Author Report Share Posted November 11, 2007 ok tony nice 1 im not convinced by this either but ill try anything once thay were a bit vauge on the cost to Quote Link to comment Share on other sites More sharing options...
Tony Posted November 11, 2007 Report Share Posted November 11, 2007 ok tony nice 1 im not convinced by this either but ill try anything once thay were a bit vauge on the cost to Tell us..... What was the fee? Quote Link to comment Share on other sites More sharing options...
jammy Posted November 11, 2007 Author Report Share Posted November 11, 2007 any where between £3 to £4 a wheel Quote Link to comment Share on other sites More sharing options...
Tony Posted November 11, 2007 Report Share Posted November 11, 2007 any where between £3 to £4 a wheel that's a lot of money for filtered air....... Quote Link to comment Share on other sites More sharing options...
jammy Posted November 11, 2007 Author Report Share Posted November 11, 2007 well for normal air round here is a pound a through Quote Link to comment Share on other sites More sharing options...
ROB Posted November 12, 2007 Report Share Posted November 12, 2007 complete waste of time....... tbh Quote Link to comment Share on other sites More sharing options...
TDIPLC Posted November 12, 2007 Report Share Posted November 12, 2007 complete waste of time....... tbh Do aircraft use any special gas in their tyres please Rob? Quote Link to comment Share on other sites More sharing options...
ROB Posted November 12, 2007 Report Share Posted November 12, 2007 yes nitrogen - we discussed this before on the forum somewhere... copied from my previous post: its law that nitrogen or any other inert gas that contains less than 5% oxygen is used in commercial aircraft wheel assys because nitrogen does not support combustion - important when there is a brake fire or overheat ( AKA numpty pilot slammed the brakes on and tried to take first exit when plane is at max landing weight/speed) but on a serious note the criteria is aircraft with a MTOW ( max take off weight) of over 5700kg with retractable landing gear that have braked wheel assys. The main reason is to reduce inflight fires from a burst tyre. a quick copy paste from the EASA regulations: The majority of in-flight tyre bursts have been attributed to the tyre carcass being weakened by foreign object damage, scuffing, etc., such that a rapid release of pressure takes place. Such failures are usually experienced when the gear has been retracted for some time and the effects of brake heat transfer, internal tyre temperature and differential pressure are combined. A fatal accident involving cabin decompression and fire has highlighted another mode of tyre failure in flight where a tyre may fail explosively without any significant prior degradation. A tyre inflated with air and subjected to excessive heating, possibly caused by a dragging brake, can experience a chemical reaction resulting in release of volatile gases. Such a chemical reaction in the presence of the oxygen in the contained air may result in a tyre explosion in a landing gear bay and/or in-flight fire since it appears that the protection normally afforded by conventional pressure relief devices in the wheel would be incapable of responding adequately to the rapid increases in temperature and gas pressure associated with auto-ignition. Other potential benefits may accrue from the use of nitrogen as it will tend to reduce wheel corrosion, tyre fatigue and the risk of fire when fusible plugs melt due to brake overheating. Quote Link to comment Share on other sites More sharing options...
Chubbs Posted November 12, 2007 Report Share Posted November 12, 2007 I know I'm new here, but I think it's a bit of a waste of money/fad. What's the problem with good old-fashioned air? If it ain't broke... Quote Link to comment Share on other sites More sharing options...
jammy Posted November 13, 2007 Author Report Share Posted November 13, 2007 tbh i think ill stick with ya regular air for the time bein thank's for all your comment's and input guy's Quote Link to comment Share on other sites More sharing options...
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