Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

Fixed gear ratio question

Old 08-03-08, 07:54 AM
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Adam G.
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Fixed gear ratio question

I currently have a 42/16 ratio which is freewheel. I want to convert to fixed, should I stick to the 16 or go with a 17?
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Old 08-03-08, 07:57 AM
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huerro
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Do you have any problems with the 42/16 now? If not, keep it. If so, go 42/17 and know that you are going to have to spin faster to get back down the hills.
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Old 08-03-08, 08:09 AM
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Originally Posted by huerro View Post
Do you have any problems with the 42/16 now? If not, keep it. If so, go 42/17 and know that you are going to have to spin faster to get back down the hills.
I really don't have a problem so maybe I will just keep it. So basically the bigger the rear cog the more pedaling action you will have? Newbie question I know...
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Old 08-03-08, 08:24 AM
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Originally Posted by Adam G. View Post
I really don't have a problem so maybe I will just keep it. So basically the bigger the rear cog the more pedaling action you will have? Newbie question I know...
You will spin more for the same speed if comparing switch from 16 -> 17
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Old 08-03-08, 08:24 AM
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Old 08-03-08, 09:09 AM
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The "normal" way to set up a flip flop hub is to have your freewheel one tooth larger than your fixed cog. The logic being that you're going to use the larger cog for for hilly conditions where you might want to coast downhill.

I like to have my fixed gears just a little higher (meaning smaller cog) than my geared bikes.
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Old 08-03-08, 09:31 AM
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Originally Posted by Adam G. View Post
I currently have a 42/16 ratio which is freewheel. I want to convert to fixed, should I stick to the 16 or go with a 17?
We need more information than that.

Can you climb ok in your present gearing? Do you spin out when going fast?
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Old 08-03-08, 09:47 AM
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Originally Posted by bionnaki View Post
So based on that chart, if i currently have a 46 up front and 15 in back, it'd be best to switch to a 17 or 19 for the most skid patches?
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Old 08-03-08, 10:15 AM
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Originally Posted by MrCjolsen View Post
The "normal" way to set up a flip flop hub is to have your freewheel one tooth larger than your fixed cog. The logic being that you're going to use the larger cog for for hilly conditions where you might want to coast downhill.

I like to have my fixed gears just a little higher (meaning smaller cog) than my geared bikes.
+1

Having a freewheel option in a hilly area is a great idea.
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Old 08-03-08, 09:45 PM
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42/16 is a good ratio for non hilly regions.

Whatever it is.. 42/16 or 42/17 you'll get used to it.
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Old 08-03-08, 10:02 PM
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Originally Posted by onespeed89 View Post
So based on that chart, if i currently have a 46 up front and 15 in back, it'd be best to switch to a 17 or 19 for the most skid patches?
There's only a marginal difference in the number of skid patches, and bumping up 2 or 4 teeth is a major change in gear ratio.
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