Bike gear calculator
10-06-19, 05:45 PM
#26
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10-06-19, 06:03 PM
#27
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OK, try this thought experiment:
When you sit on the bike, the contact patch flattens, making a shorter distance to the axle.
As you ride, that contact patch stays the same (more or less, on average) so the effective diameter-and thus circumference- is less than it is for the unweighted bike.
The good thing about thinking of it this way is that it agrees with results if you measure.
10-06-19, 06:23 PM
#28
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Interesting stuff if you know what you have.... My cassette came on an ebay rim and I have no recollection of make and # of teeth... just that it has 9 rings.... The hubs are shimano on a rhyno sun lite rim... though that doesn't necessarily equate to anything.... Help?
10-09-19, 06:00 AM
#29
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When did the season turn to winter? 
10-10-19, 08:38 AM
#30
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You can say that "there's more to the maximum speed that you can achieve than just final gear ratio" -- that would be correct. But it's also really obvious that TDF riders go faster than all of us and it's not because of gear ratios they have on their bikes that none of us have thought to install.
Nobody's talking about that though, the discussion was specifically about gear calculators which do one simple thing -- show you the speed you would go for a given cadence and gear combination for a given bike/wheel size.
Nobody's talking about that though, the discussion was specifically about gear calculators which do one simple thing -- show you the speed you would go for a given cadence and gear combination for a given bike/wheel size.
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