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Cold weather means....

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Cold weather means....

Old 11-06-10, 02:10 PM
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Cold weather means....

more tire pressure right? How much should I inflate up to?
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Old 11-06-10, 02:23 PM
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Originally Posted by gtrwanka
more tire pressure right? How much should I inflate up to?
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Old 11-06-10, 02:23 PM
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I always run the same, about 110 in the front, 115 in the rear.
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Old 11-06-10, 03:27 PM
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That's a new one on me. I always use the same. If anything I use a little less in the off season for a slightly softer ride.
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Old 11-06-10, 03:54 PM
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no changes
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Old 11-06-10, 03:54 PM
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I keep my bikes in the garage, so when I check the pressure it is at pretty much "outdoor temperature" therefore I just put the same pressure in as usual. I guess if you are keeping your bike in the warmth then perhaps you should put a bit more in. But tbh I'm not sure how much more you'd need, nor if it would really make much difference.
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Old 11-06-10, 04:26 PM
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cold air is denser you'll need more air in the tire to maintain the same pressure as in the summer. not higher pressure.
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Old 11-06-10, 05:19 PM
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32 degrees today and 35 rear/ 30 front was perfect
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Old 11-06-10, 05:27 PM
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I nominate this thread for the 41 HOF.
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Old 11-06-10, 05:28 PM
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More clothing. Cold means more clothing.
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Old 11-06-10, 05:30 PM
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Cold weather means that it's time to post 100 ******** threads about trainers and rollers.
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Old 11-06-10, 05:34 PM
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I use the same (120psi) year round. I don't see it making that noticeable of a difference unless you lived somewhere with some extreme temperature changes. Even then I doubt it great enough to matter for winter training.
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Old 11-06-10, 05:40 PM
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I can't believe people are seriously responding to this thread--then again who am I kidding?
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Old 11-06-10, 05:41 PM
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Is it winter yet?
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Old 11-06-10, 06:19 PM
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110 psi in normal conditions, if it drops by more than 30 degrees inflate to 200 psi.

It recently plummeted into the low 80s here in Southern California and I'm currently at 250 psi.
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Old 11-06-10, 06:19 PM
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it means lots of nonsense threads, apparently.
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Old 11-06-10, 06:26 PM
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So is this a pointless thread about physics or not?
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Old 11-06-10, 06:48 PM
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Originally Posted by Pedaleur
So is this a pointless thread about physics or not?
No.

Edit: I hope not, every time physics comes up in the 41 I realize what "they" mean when "they" say America is behind on science and math education.
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Old 11-06-10, 07:18 PM
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Originally Posted by wens
No.

Edit: I hope not, every time physics comes up in the 41 I realize what "they" mean when "they" say America is behind on science and math education.
So you're saying I shouldn't point out that if you pump up in your 70 degree house and it's 35 degrees outside you lose 1/2 of your air pressure?

(Don't worry, I know it's way more than that in Europe, where they use Celsius.)
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Old 11-06-10, 07:25 PM
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Originally Posted by Pedaleur
So you're saying I shouldn't point out that if you pump up in your 70 degree house and it's 35 degrees outside you lose 1/2 of your air pressure?

(Don't worry, I know it's way more than that in Europe, where they use Celsius.)
Something like that
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Old 11-06-10, 08:06 PM
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Originally Posted by Pedaleur
So you're saying I shouldn't point out that if you pump up in your 70 degree house and it's 35 degrees outside you lose 1/2 of your air pressure?
No...you shouldn't point that out..because it is incorrect. I'm not sure if you're kidding or not...one never knows....The equation you are probably thinking of that makes you think if you cut the temp in half the volume is halved is the ol' PV=nRT, but in that equation the T is not in Fahrenheit...I'll leave that hint... And for a really simply test....take your tire pressure in the house and then go outside at 35F and check the pressure. I'm fairly sure it won't be 1/2 what it was inside.
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Old 11-06-10, 08:20 PM
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Originally Posted by patentcad
More clothing. Cold means more clothing.
True enough and I find it a lot easier to stay warm in the cold than cool in the hot while cycling.
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Old 11-06-10, 08:23 PM
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okay, i am riding tomorrow but it seems putting air is not a simple task and might take whole night to figure out. but i'm working on it as you can see.
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Old 11-06-10, 08:50 PM
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Originally Posted by patentcad
more clothing. Cold means more clothing.
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Old 11-06-10, 08:59 PM
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Originally Posted by digibud
No...you shouldn't point that out..because it is incorrect. I'm not sure if you're kidding or not...one never knows....The equation you are probably thinking of that makes you think if you cut the temp in half the volume is halved is the ol' PV=nRT, but in that equation the T is not in Fahrenheit...I'll leave that hint... And for a really simply test....take your tire pressure in the house and then go outside at 35F and check the pressure. I'm fairly sure it won't be 1/2 what it was inside.
Considering the post he's replying to, I'm over 99% sure he was kidding.
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