691 reputation
1517
bio website xpda.com
location Pryor, OK
age
visits member for 3 years, 3 months
seen Jul 14 at 18:33

Bob Webster from Pryor, OK


Oct
5
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24
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Jul
14
comment How much does rider weight increase tire pressure?
This matches my June 5 comment above.
Jul
14
accepted How much does rider weight increase tire pressure?
Jul
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Jun
5
comment How much does rider weight increase tire pressure?
Maybe it is a simple formula. Take the interior area of the tube, maybe 78 sq inches. Fill the tire to 100 psi. Add a 150 lb rider. Is the 150 lbs distributed evenly among the 78 sq inches (assuming no tire stiffness)? If so, this would add about a little less than 2 psi. The increase in contact area would be proportional. I'm not sure about this, but it seems reasonable.
Apr
19
comment How much does rider weight increase tire pressure?
I think it has to be accurate. I checked it myself (on a tire with a shrader valve) and got the same result -- about 1 psi increase from 45.
Apr
18
asked How much does rider weight increase tire pressure?
Apr
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Aug
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29
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Mar
13
comment How to mount Galaxy S3 on a mountain bike
Good question. I'm looking for an s3 mount for a road bike.
Mar
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awarded  Citizen Patrol
Oct
26
comment What road bike tire pressure is best for speed?
On a smooth track, rolling resistance is least with maximum pressure. That's why trains use steel wheels. A track is smooth, but roads have regular bumps half the diameter of the tire. If a tire has no "give", then the bike bounces instead of the tire deforming, which costs energy. So there is a tradeoff.
Aug
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10
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