Capricorn Posted June 20, 2016 Share That is related to hydraulics though, this is related to gasses. I may have missed the connection though and just wanted to throw in a chirp while I eat this here popcorn. There are minor changes in behaviour due to compressibility effects under dynamic conditions, but the basic principle remains the same as the pressure, force, area relationship applies to all fluids, whether its liquid or gas. 6 bar pressure is 6 bar pressure, whether its liquid or gas in this case. Since the situation describes static loading, compressibility effects don't come into play, and the P= F/A relationship holds true as is. Edited June 20, 2016 by Capricorn Underachiever, Rocket-Boy and Captain Fastbastard Mayhem 3 Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted June 20, 2016 Share minor changes in behaviour due to compressibility effects under dynamic conditiosn, but the basic principle remains the same as the pressure, force, area relationship applies to all fluids, whether its liquid or gas. 6 bar pressure is 6 bar pressure, whether its liquid or gas in this case. Since the situation is describes static loading, compressibility effects don't come into play, so the P= F/A relationship holds true.Bazinga. raptor-22 1 Link to comment Share on other sites More sharing options...
raptor-22 Posted June 20, 2016 Share can we lock this thread till everyone has read up on Boyles Law? Captain Fastbastard Mayhem and Fisan 2 Link to comment Share on other sites More sharing options...
porqui Posted June 20, 2016 Share Yep !! But I prefer Dalton's Law Some very interesting info here http://sheldonbrown.com/tires.html Still one of my favourites and all time "go to" sitesHier kan jy nie stry nie!! . Edited June 20, 2016 by porqui Link to comment Share on other sites More sharing options...
Eugene Brown Posted June 20, 2016 Share Or we can accept the rim manufacturer's answer, being that the rim can handle a higher inflation pressure with a smaller volume tyre! End of debate I'm sure they will not make a statement like that without being certain that their product can live up to the higher pressure in that configuration, partly because they are proud Swiss engineers , and partly because, in the modern business world, there is a very real threat of damages lawsuits against directors of a business in their personal capacity, and nobody wants to go there. raptor-22 and Captain Fastbastard Mayhem 2 Link to comment Share on other sites More sharing options...
Rocket-Boy Posted June 20, 2016 Share There are minor changes in behaviour due to compressibility effects under dynamic conditions, but the basic principle remains the same as the pressure, force, area relationship applies to all fluids, whether its liquid or gas. 6 bar pressure is 6 bar pressure, whether its liquid or gas in this case. Since the situation describes static loading, compressibility effects don't come into play, and the P= F/A relationship holds true as is.Thanks for the explanation, as mentioned before Im just a sideline popcorn muncher.Im loving that this thread has has so many conflicting views but has managed to stay civil and informative at the same time. porqui, Tandemonium 2, Captain Fastbastard Mayhem and 1 other 4 Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted June 20, 2016 Share Thanks for the explanation, as mentioned before Im just a sideline popcorn muncher.Im loving that this thread has has so many conflicting views but has managed to stay civil and informative at the same time.thing is, only one of those views is correct Link to comment Share on other sites More sharing options...
Showtime Posted June 20, 2016 Share Thanks for the explanation, as mentioned before Im just a sideline popcorn muncher.Im loving that this thread has has so many conflicting views but has managed to stay civil and informative at the same time.It is quite refreshing that people can think out loud without fear of ridicule. Let's hope it stays that way. What is so serious about being wrong sometimes in any case [emoji3] Sent from my iPhone using Tapatalk Edited June 20, 2016 by Showtime Rocket-Boy 1 Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted June 20, 2016 Share It is quite refreshing that people can think out loud without fear of ridicule. Let's hope it stays that way. What is so serious about being wrong sometimes in any case [emoji3] Sent from my iPhone using TapatalkNothing at all. As long as you're prepared to acknowledge when you are, and change your POV after being proven so. Showtime 1 Link to comment Share on other sites More sharing options...
Tandemonium 2 Posted June 20, 2016 Share Eugene my rims are the 540 tandem hub with p545, 700 c rims. I will try and upload their pressure chart that shows you what size tyre fits to your size rim. Capricorn 1 Link to comment Share on other sites More sharing options...
Eugene Brown Posted June 20, 2016 Share Eugene my rims are the 540 tandem hub with p545, 700 c rims. I will try and upload their pressure chart that shows you what size tyre fits to your size rim.Thanks Anton, that would be super. If it's a problem, I'll PM you my rim/hub model numbers when I get home this evening. Link to comment Share on other sites More sharing options...
Tandemonium 2 Posted June 20, 2016 Share Thanks Anton, that would be super. If it's a problem, I'll PM you my rim/hub model numbers when I get home this evening.dt swissTire-Pressure-Dimension20150820.pdf Link to comment Share on other sites More sharing options...
Tandemonium 2 Posted June 20, 2016 Share the Tech looked up my rim sizes inner and outer and then based on that he said 6bar is fine . The rims came out with racing ralph 2.1 tyres . If I look at that size the chart says I should not exceed 4 bar . So the 4 bar looks as if it was specific for the 2.1 profile . Edited June 20, 2016 by anton b Link to comment Share on other sites More sharing options...
Rocket-Boy Posted June 20, 2016 Share thing is, only one of those views is correct Im pretty sure everyone with a horse in this race thinks they are right! raptor-22 1 Link to comment Share on other sites More sharing options...
madbradd Posted June 21, 2016 Share dt swissTire-Pressure-Dimension20150820.pdf This is pretty interesting, especially if you plot the tyre size (I just used pi x r x r for area of the tyre section, but didn't take the change in "length" of the tyre to account for exact volume) and pressure. Link to comment Share on other sites More sharing options...
madbradd Posted June 21, 2016 Share Im pretty sure everyone with a horse in this race thinks they are right! I'm an engineer. I've assumed that the horse is a sphere so that the math is easier. raptor-22 and Underachiever 2 Link to comment Share on other sites More sharing options...
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