Questions that keep one awake at night
08-19-18, 12:57 PM
#1
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Questions that keep one awake at night
If I start a ride with both valve stems at 6:00, and both wheels and tires have the same diameter, why is it when I finish the ride, the valve stems are no longer in phase? (For example, one might be at 3:00 and the other at 11:00.)
08-19-18, 01:14 PM
#2
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Because of the teeny tiny difference in the circumference of each tire due to the distortion caused by the (usually) heavier weight on the rear tire. This is commonly known as the difference between theory and reality. Or are you doing wheelies and just not telling us?
08-19-18, 01:22 PM
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Bumps in the road ?
different brake forces applied to each wheel at different times .
tire gnomes?
wheel goblins?
different brake forces applied to each wheel at different times .
tire gnomes?
wheel goblins?
08-19-18, 01:22 PM
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Several reasons, which should be apparent.
08-19-18, 01:27 PM
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This is a great question!
Honestly never given it a moments consideration because I'm too exhausted by losing sleep over why those pesky valve stem nuts loosen when I ride!
So my hope is that these mysteries will cancel each other out and lead me to sleepin' nirvana!
/or maybe not..
//maybe something worse...
EDIT::Also, why the heck did I think I could reach down and tighten them while I'm riding? Mangled my hand pretty good...
Honestly never given it a moments consideration because I'm too exhausted by losing sleep over why those pesky valve stem nuts loosen when I ride!
So my hope is that these mysteries will cancel each other out and lead me to sleepin' nirvana!
/or maybe not..
//maybe something worse...
EDIT::Also, why the heck did I think I could reach down and tighten them while I'm riding? Mangled my hand pretty good...
08-19-18, 01:32 PM
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In addition to the reasons already given, your front tire travels a slightly longer distance whenever you make a turn since the rear wheel cuts the corner a bit more sharply.
08-19-18, 01:44 PM
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This is a great question!
Honestly never given it a moments consideration because I'm too exhausted by losing sleep over why those pesky valve stem nuts loosen when I ride!
So my hope is that these mysteries will cancel each other out and lead me to sleepin' nirvana!
/or maybe not..
//maybe something worse...
EDIT::Also, why the heck did I think I could reach down and tighten them while I'm riding? Mangled my hand pretty good...
Honestly never given it a moments consideration because I'm too exhausted by losing sleep over why those pesky valve stem nuts loosen when I ride!
So my hope is that these mysteries will cancel each other out and lead me to sleepin' nirvana!
/or maybe not..
//maybe something worse...
EDIT::Also, why the heck did I think I could reach down and tighten them while I'm riding? Mangled my hand pretty good...
08-19-18, 01:44 PM
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Stop roasting those tires every time you accelerate from a stop sign. You beast! Think of your poor tires for once. 
08-19-18, 01:45 PM
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Because of the teeny tiny difference in the circumference of each tire due to the distortion caused by the (usually) heavier weight on the rear tire. This is commonly known as the difference between theory and reality. Or are you doing wheelies and just not telling us?
08-19-18, 03:32 PM
#12
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You know, this nightmare is usually associated with a math test in high school.
08-19-18, 03:33 PM
#13
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08-19-18, 03:37 PM
#14
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Perhaps it could be used to adjust the pressure ratio of the front to back tire, i.e., adjust the ratio until the valve stems are still in phase at the end of a one mile ride with no turns. The ideal ratio would then be one that empirically leads to the least amount of valve-stem dephasing.
08-19-18, 03:42 PM
#15
Non omnino gravis
Based on an imaginary pair of 700x25 tires, if the different inflation pressure between front and rear tire amounts to just 1mm difference in rollout, the "smaller" tire will have to complete an extra full revolution every 2 miles or so.
Oh, and tire wear, of course. Which adds to the above.
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08-19-18, 04:13 PM
#16
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08-19-18, 04:33 PM
#17
Non omnino gravis
AQI 169. It’s pretty mucky. Got in ~20 this morning, it didn’t feel too bad. Last Wednesday was BAD, I probably should have sat out. My chest felt heavy for the entire day after the ride.
08-19-18, 04:45 PM
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Wheelspin! I’ve got mad torque in my mighty legs.
08-19-18, 05:00 PM
#20
Every day a winding road
I'll bet all of your shirts are hung p in your closet at exact distances from one another, all of your kitchen supplies are neatly lined up and organized, etc etc.
08-19-18, 05:40 PM
#22
Interocitor Command
08-19-18, 05:45 PM
#23
Interocitor Command
What keeps me up at night lately is thinking about 4th dimensional cubes. This is a 2D representation of what we might see in our 3D world. In the 4th dimension, however, all of the angles would be 90 degree right angles. There would be no distortions.
08-19-18, 06:34 PM
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Since the total sum of knowledge is expanding rapidly,
the percentage that one person can know is shrinking.
We are all becoming more ignorant by the minute.
the percentage that one person can know is shrinking.
We are all becoming more ignorant by the minute.
08-19-18, 06:48 PM
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Do you really align the valve stems before you ride?