TIB Posted October 30, 2014 Posted October 30, 2014 Oxygen molecules are smaller than nitrogen molecules, thus as your tyre lose air over time more oxygen molecules are lost and the nitrogen percentage in the tyre increase. Being patient will give you the same result as a R80 nitrogen shot. Yes, there is benefits in highly technical top end applications, but by an large we are being taken for a ride. Nitrogen is the most common gas in the world! Why charge so much for it? As an aside, the green pigment in the vale caps fade very quickly so the freebee does not look good for long....
JXV Posted October 30, 2014 Posted October 30, 2014 CO2 becomes a solid (dry ice) at about 7bar.Yes....but only if it is also cooled to -56 C or colder at the same time. At ambient temps it does not exist as a solid at any pressure...look up the CO2 phase diagram. I worked in a place that makes dry ice. Pressure in a full12g bomb varies from about 800psi at 20C to about 1400psi at 40C. At 20C it is mostly liquid and above 30C it is all gas (supercritical). Sorry if OT
Mada3400 Posted October 30, 2014 Posted October 30, 2014 the first road car that i know of that had nitrogen put in its tyres as standard was the most recent nissan GTR (2007-) they did it because it reacted to heat less than air and so the tyre characteristics changed less as they warmed up. i also cant stand it when the air in my tyres heat up so much they become unridable.... oh wait no i havent done it. just for an experiment, take your bike to the top of a long and fairly challenging dh like jonkershoek never ending story (or canaries... dunno) and go to the bottom as fast as you can then feel your shock, you should almost burn yourself... thats from air continous compression
Dirkitech Posted October 31, 2014 Posted October 31, 2014 the first road car that i know of that had nitrogen put in its tyres as standard was the most recent nissan GTR (2007-) they did it because it reacted to heat less than air and so the tyre characteristics changed less as they warmed up. i also cant stand it when the air in my tyres heat up so much they become unridable.... oh wait no i havent done it. just for an experiment, take your bike to the top of a long and fairly challenging dh like jonkershoek never ending story (or canaries... dunno) and go to the bottom as fast as you can then feel your shock, you should almost burn yourself... thats from air continous compressionare you implying that shocks should get nitrogen shots?
Cassie Posted October 31, 2014 Posted October 31, 2014 It's like selling ice to eskimos...sorry... - Inuit people
Mada3400 Posted November 17, 2014 Posted November 17, 2014 are you implying that shocks should get nitrogen shots? no im saying that you didnt realise that your rear shock was changing until i told you thats how little it matters
droo Posted November 18, 2014 Posted November 18, 2014 the first road car that i know of that had nitrogen put in its tyres as standard was the most recent nissan GTR (2007-) they did it because it reacted to heat less than air and so the tyre characteristics changed less as they warmed up. i also cant stand it when the air in my tyres heat up so much they become unridable.... oh wait no i havent done it. just for an experiment, take your bike to the top of a long and fairly challenging dh like jonkershoek never ending story (or canaries... dunno) and go to the bottom as fast as you can then feel your shock, you should almost burn yourself... thats from air continous compression The heat buildup in your shock is actually mainly due to the damper fluid, which stops you from ejecting into the bushes by converting kinetic energy into heat. The continuous compression and expansion of the air will play a role as well, but not nearly as much as the damper.
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