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SIngle Speed gear chart for 26' and 29'


STEEL Niner

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             26 inch Wheel

 

 

 

             29      30       32       33       34       36

 

 

 

14      53.86   55.71   59.43   61.29   63.14   66.86

 

15      50.27   52.00   55.47   57.20   58.93   62.40

 

16      47.13   48.75   52.00   53.63   55.25   58.50

 

17      44.35   45.88   48.94   50.47   52.00   55.06

 

18      41.89   43.33   46.22   47.67   49.11   52.00

 

19      39.68   41.05   43.79   45.16   46.53   49.26

 

20      37.70   39.00   41.60   42.90   44.20   46.80

 

21      35.90   37.14   39.62   40.86   42.10   44.57

 

22      34.27   35.45   37.82   39.00   40.18   42.55

 

 

 

           29 inch Wheel

 

 

 

           29        30       32       33       34       36

 

 

 

16      52.56   54.38   58.00   59.81   61.63   65.25

 

17      49.47   51.18   54.59   56.29   58.00   61.41

 

18      46.72   48.33   51.56   53.17   54.78   58.00

 

19      44.26   45.79   48.84   50.37   51.89   54.95

 

20      42.05   43.50   46.40   47.85   49.30   52.20

 

21      40.05   41.43   44.19   45.57   46.95   49.71

 

22      38.23   39.55   42.18   43.50   44.82   47.45

 

23      36.57   37.83   40.35   41.61   42.87   45.39

 

24      35.04   36.25   38.67   39.88   41.08   43.50

 

 

 

It may not be perfect according to your exact tire sizes etc (and am not sure what was used) but as a comparison it is a good starting point. For exact comparisons to your tires etc use sheldon browns calculator. This is just less cumbersome.

 

And before any one asks:.................................... i dont know what it weighs! smiley2.gif

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@GT racing.

 

This is a chart giving you a rough guide to single speed gear ratios.

 

Top row is the amount of teeth on your front chainring, left column is amount of teeth on your rear cog/sprocket. You match them like a distance calculator in map book, where they meet (vert & horiz) is your gear ratio in roll-out inches. Amount of distance your bike travels for one revolution of the crank ( i think) the higher the number the further your bike travels per crank revolution.

 

It comes in handy when you have various chainrings and rear cogs and want to change your SS ratio to bigger or smaller gearing. I also use it to compare ratios with guys on bikes with different wheels ie 26" or 29" so if you and your mate have different wheel sizes and you are heading out on a SS ride you can get the ratios similar if your strengths are similar too of course! Hope this helps!?!?

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@GT racing.
This is a chart giving you a rough guide to single speed gear ratios.
Top row is the amount of teeth on your front chainring' date=' left column is amount of teeth on your rear cog/sprocket. You match them like a distance calculator in map book, where they meet (vert & horiz) is your gear ratio in roll-out inches. Amount of distance your bike travels for one revolution of the crank ( i think) the higher the number the further your bike travels per crank revolution.
It comes in handy when you have various chainrings and rear cogs and want to change your SS ratio to bigger or smaller gearing. I also use it to compare ratios with guys on bikes with different wheels ie 26" or 29" so if you and your mate have different wheel sizes and you are heading out on a SS ride you can get the ratios similar if your strengths are similar too of course! Hope this helps!?!?[/quote']

 

Is that given in inches?

 

Like 17 x 33 gives you a ratio of 50, I think.

50 what?
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It all goes back to the Ordinary bicycle ( Penny Farthing ).

That would be the Diameter of the wheel ( front ) so a gear of 53 chainring with a 12 sprocket on  a mondern bike with 27 inch wheels would be 119.25.

If that is x pie you travel 374.86 inches per revolution of the crank.

So if we did not have the gears of today we would be riding Ordinaries with a wheel dia of 119.25 inches 9 foot 11inches. Now that would make your eyes water, unless you are 20 foot tall. ( 9foot 11inches is about 3metres, before someone asks )  

IN Europe they never got round to understanding inches and feet ( far better using a base of 12 ) Hence they say 53 x 12 and have no idea what it all means!!!

 
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