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Gear - Inches chart for reference

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Gear - Inches chart for reference

Old 12-12-19, 03:41 AM
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reconnaissance
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Gear - Inches chart for reference

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Old 12-12-19, 08:58 AM
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I like this for the same reason I like slide rules: it gives you a sense of just how important (or unimportant) accuracy to the 4th decimal point is.
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Old 12-12-19, 09:00 AM
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Unimportant
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Old 12-12-19, 11:38 AM
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Sheldon brown one cuz it's straightforward and clearly shows percentage jumps between each shift

And the "HTML gear calculator" because it's so flexible, you can change stuff on the fly and easily visually compare two setups, a great tool. Doesn't display percentage jumps clearly though, which is nice to know.
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Old 12-12-19, 11:54 AM
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Post-internet era.
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Old 12-12-19, 01:44 PM
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Whenever I want to look up that stuff I just work out each ratio with my pocket calculator. It's faster than using a chart if you include the time I'd have to spend looking for the chart.
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Old 12-12-19, 01:52 PM
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Originally Posted by reconnaissance View Post
Thanks for posting that as it contains good info to know. Unfortunately, maybe I'm the only one, but I have to confess that I find my ability to read or understand that graph/chart a bit visually challenging. It's not the gear feet concept info but the chart that is confusing.
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Old 12-12-19, 02:16 PM
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Originally Posted by BengalCat View Post
Thanks for posting that as it contains good info to know. Unfortunately, maybe I'm the only one, but I have to confess that I find my ability to read or understand that graph/chart a bit visually challenging. It's not the gear feet concept info but the chart that is confusing.
Just curious: would it be easier to calculate it? [Not a rhetorical question. I really want to understand the spectrum of abilities and how it changes over time.]
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Old 12-12-19, 02:20 PM
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For graph challenged types, such as myself, I like this calculator. BikeCalc.com - Bicycle Gear Ratio Chart
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Old 12-12-19, 02:35 PM
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Originally Posted by BengalCat View Post
Thanks for posting that as it contains good info to know. Unfortunately, maybe I'm the only one, but I have to confess that I find my ability to read or understand that graph/chart a bit visually challenging. It's not the gear feet concept info but the chart that is confusing.
to me the chart is confusing. Heck the paper chart I used in 1991 to figure out my gearing change then was much clearer than this.
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Old 12-12-19, 06:00 PM
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I love this gear calculator. It takes a little time to get used to it, But once you do in an instant you can see where the ratio's between any # of gears and chainrings are to large and where they overlap. You can even set the max chain angle to show only the gears with minimum cross chaining.

Bicycle Gear Calculator

It's true what they say "A picture is worth 1,000 words" or in this case, Numbers.
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Old 12-13-19, 08:03 AM
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Originally Posted by BengalCat View Post
Thanks for posting that as it contains good info to know. Unfortunately, maybe I'm the only one, but I have to confess that I find my ability to read or understand that graph/chart a bit visually challenging. It's not the gear feet concept info but the chart that is confusing.
Takes two fingers. Put one finger on the chain ring number and the other finger on the cog number. Slide the chain ring finger down the angled line while sliding the cog finger up the angled line. When your fingers meet, slide one finger to the right on the horizontal line.

I never used a slide rule like Wizard of Boz mentioned, but I did spend many hours using a cardboard E6B flight computer back in the day.
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Old 12-14-19, 09:03 AM
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Which 26" wheel size does the chart reference? Which 20" wheel size? What about 700/622? Etc.
I vote for online gear calculators.
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Old 12-14-19, 09:30 AM
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Originally Posted by Crankycrank View Post
For graph challenged types, such as myself, I like this calculator. BikeCalc.com - Bicycle Gear Ratio Chart
Thatís extensive but ultimately useless as you donít need to see every potential gear combo for all chainrings between 30 and 46. I have a single 30 and a single 46, thatís all I want to see the gear combos for,
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Old 12-14-19, 09:55 AM
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Originally Posted by Steve B. View Post
Thatís extensive but ultimately useless as you donít need to see every potential gear combo for all chainrings between 30 and 46. I have a single 30 and a single 46, thatís all I want to see the gear combos for,
In your case just enter 30 (or 46) in the MIN: box and 30 (or 46) in the MAX: box at the top of the page.
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Old 12-14-19, 10:54 AM
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Originally Posted by Crankycrank View Post
In your case just enter 30 (or 46) in the MIN: box and 30 (or 46) in the MAX: box at the top of the page.
Yes, got that, but it then lists every ratio for every potential chainring between 30 and 46. That displays a lot of useless info as nobody has that type of system. It wants to just show the ratio for the 1,2 or 3 chainrings used, as Sheldons gear calculator shows.
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