filling up tires
12-04-05, 04:15 PM
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filling up tires
what different types of gasses do you use in your tires? I use helium and it works pretty well. It makes my bike weigh less and its is good under different temperatures. I was wonderinging about other gasses like nitrogen or carbon dioxide.
12-04-05, 05:41 PM
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thats extremely stupid, just use air. helium isnt gonna have any worth-while effect on weight.
12-04-05, 07:11 PM
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Originally Posted by wheelerer
what different types of gasses do you use in your tires? I use helium and it works pretty well. It makes my bike weigh less and its is good under different temperatures. I was wonderinging about other gasses like nitrogen or carbon dioxide.
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12-04-05, 07:18 PM
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I use liquid nitrogen, it adds boost to my riding.
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12-04-05, 08:30 PM
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Originally Posted by wheelerer
what different types of gasses do you use in your tires? I use helium and it works pretty well. It makes my bike weigh less and its is good under different temperatures. I was wonderinging about other gasses like nitrogen or carbon dioxide.
c02 Also doesnt work, its good for a quick fix when your on the trail and have a c02 pump handy, but it will leak out in a day. Same with nitrogen.
In closing, next time you fill up your tires, which shouldnt be to far off, do us all a favor and use propane. Than promptly ride through a fire.
12-04-05, 10:59 PM
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I think he wandered out of a SCUBA forum. Divers use helium mixes sometimes.
12-04-05, 11:33 PM
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stupid. if you compress helium it will be exactly the same weight as air, not worthy of .001mg difference if you have to pay more than .05 cents per fill.
12-04-05, 11:54 PM
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Originally Posted by Sonic_Molson
stupid. if you compress helium it will be exactly the same weight as air, not worthy of .001mg difference if you have to pay more than .05 cents per fill.
Assuming the gas is ideal (not really because helium close to it's critical pressure at 40psi, but close enough), you can use the gas law to determine the mass difference. Estimating tire volume (probably way off, but I ballparked it) gives you anywhere from 4 grams to 40 grams depending on your tire size. Anyone have some tire measurements?
Now of course this is rediculous, considering that you could visit the bathroom and loose more
.However, some people like to count the grams on their bikes and this is a real cheap way to save some weight. Not sure on the solubility of helium in rubber though.....
*edit* so ok, I looked it up, helium is rather soluble in rubber, not a good compund to use, not cheap either.....just incase anyone cared
Last edited by PCS2; 12-05-05 at 12:04 AM.
12-05-05, 10:55 AM
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Originally Posted by KonaRider24
I use liquid nitrogen, it adds boost to my riding.
12-05-05, 11:06 AM
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12-05-05, 12:01 PM
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Pfft, that's when you fire up the afterburner, good buddy!
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12-05-05, 02:33 PM
#18
Throw the stick!!!!
That's great that you use helium. Saving that amount of weight should help you save about 3 seconds per mile. Unfortunately you are also going to have to stop every 2 miles to add more helium so I hope you are carrying a helium tank with you as well. That extra weight will probably cause you to lose about 30 seconds per mile. Then you also need to calculate the time it takes to dismount every two miles plus the time it takes to add the helium to your tires. All in all you should only lose about two minutes per mile by using helium.
At this rate it will take you an extra four minutes to travel the two miles you must travel to reach the bridge you reside under.
At this rate it will take you an extra four minutes to travel the two miles you must travel to reach the bridge you reside under.
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12-05-05, 03:50 PM
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Originally Posted by bruiser2
i know it wouldn't be good but would water work?
12-05-05, 05:05 PM
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Originally Posted by wheelerer
what different types of gasses do you use in your tires? I use helium and it works pretty well. It makes my bike weigh less and its is good under different temperatures. I was wonderinging about other gasses like nitrogen or carbon dioxide.
12-05-05, 05:12 PM
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I heard used cries of "hurrah!" from past episodes of baywatch were the hot tip.
12-05-05, 05:34 PM
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Originally Posted by bruiser2
i know it wouldn't be good but would water work?
12-05-05, 05:51 PM
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i've heard it's actually easier to get height if you ingest the helium orally. or was that "get high"?
holy #$@& 60psi! isn't your coiler heavy enough?
Originally Posted by Coiler_Guy
air at 60psi! thats the only way to have it. no fancy gases, just cheap old air.
12-05-05, 05:54 PM
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Originally Posted by wheelerer
what different types of gasses do you use in your tires? I use helium and it works pretty well. It makes my bike weigh less and its is good under different temperatures. I was wondering about other gasses like nitrogen or carbon dioxide.
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12-05-05, 06:31 PM
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This topic came up on another forum is visit last year. It is one of the weirdest threads I had seen up till then. People started talking about how the weight could make you fall slower if you were a hucker. Then there was a fight about gravity then the politics nerds threatened the maths nerds.......
The end result was that if you used helium you would be pumping up your tyres very frequently but you would probably save around 14grams per wheel.
Here is a link to the thread, it is an interesting rear, especially when two people spend a lot of time trying to prove ther point is right and the other person is wrong, and they are saying the same thing!
https://forums.farkin.net/showthread....ghlight=Helium
What ever you do, don't post in that thread! ULTIMATE GRAVEDIG.
The end result was that if you used helium you would be pumping up your tyres very frequently but you would probably save around 14grams per wheel.
Here is a link to the thread, it is an interesting rear, especially when two people spend a lot of time trying to prove ther point is right and the other person is wrong, and they are saying the same thing!
https://forums.farkin.net/showthread....ghlight=Helium
What ever you do, don't post in that thread! ULTIMATE GRAVEDIG.