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-   -   Fixed gear ratio question (https://www.bikeforums.net/singlespeed-fixed-gear/449456-fixed-gear-ratio-question.html)

Adam G. 08-03-08 07:54 AM

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?

huerro 08-03-08 07:57 AM

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.

Adam G. 08-03-08 08:09 AM


Originally Posted by huerro (Post 7194700)
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...

operator 08-03-08 08:24 AM


Originally Posted by Adam G. (Post 7194737)
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

bionnaki 08-03-08 08:24 AM

http://i36.tinypic.com/kejmts.jpg

MrCjolsen 08-03-08 09:09 AM

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.

Hobartlemagne 08-03-08 09:31 AM


Originally Posted by Adam G. (Post 7194693)
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?

onespeed89 08-03-08 09:47 AM


Originally Posted by bionnaki (Post 7194791)

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?

bbattle 08-03-08 10:15 AM


Originally Posted by MrCjolsen (Post 7194979)
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.

lymbzero 08-03-08 09:45 PM

42/16 is a good ratio for non hilly regions.

Whatever it is.. 42/16 or 42/17 you'll get used to it.

kyselad 08-03-08 10:02 PM


Originally Posted by onespeed89 (Post 7195136)
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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