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What's your gear ratio of choice?

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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)

What's your gear ratio of choice?

Old 07-09-09, 05:04 PM
  #1  
proveyouexist
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What's your gear ratio of choice?

Right now I'm riding a 48/18, but I plan on picking up a Sugino crankset today which will put my ratio at 44/18. Portland is a pretty hilly city and the ratio I'm running now isn't too bad, I just want to fly up hills.

What's everyone else riding?
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Old 07-09-09, 05:08 PM
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rymep
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42/20 on my hillclimb bike, and 48/18 on my ride around town bike.

44 or 46 would be a nice complement to the 18, seems like it would be just right for city riding.
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Old 07-09-09, 05:18 PM
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soul05
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47/18 for flat and hills
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Old 07-09-09, 05:32 PM
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Generally most people sit low to mid 70 GI for hilly areas. Not to be a a bike nazi that says use the search function, but you would probably get quite a few hits about people saying what gearing they are riding. Though since I've already responded to this one, I do pretty good w/ 46x16 getting around Seattle.
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Old 07-09-09, 05:33 PM
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48/16. not good for skidding.

i'm gonna do 48/17 tho
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Old 07-09-09, 05:41 PM
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48 x 17 for Austin which has lots of hills.
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Old 07-09-09, 05:43 PM
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Hello from Portland.

I run 44/16. It works and I like knowing that it's an exact 2.75-to-1 ratio. But that's just me being irrationally geeky.
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Old 07-09-09, 05:59 PM
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48x17 in Chicago
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Old 07-09-09, 06:06 PM
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Right now I'm running a massive 52x15 gear. I had this bright idea I might ride my FG in the local TT series Eddy Merckx style. It's great on the flats when there's no wind or stop lights. But not so great for the daily commute, which is why I usually run a 42x16 or 15.
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Old 07-09-09, 07:31 PM
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48 or 49/16.
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Old 07-09-09, 07:39 PM
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46/18 but i am running ss
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Old 07-09-09, 07:46 PM
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46:18 here too. Perfect for Seattle.
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Old 07-09-09, 07:50 PM
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psirue
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48/18 @ 165s & 700x23s
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Old 07-09-09, 07:55 PM
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38/14 on a FG cyclecross
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Old 07-09-09, 08:09 PM
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18/9 on my flatland bike
48/16 on my fixed
41/16 on my 29er (in urban form) 32/20 in mtn form
 
Old 07-09-09, 08:12 PM
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stra24
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48x18 in moderately hilly St. Paul.
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Old 07-09-09, 08:52 PM
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45x17. My cadence was too low on 45x16, and I was out of the saddle too much. Really gotta spin down the hills in Gatineau, though.
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Old 07-09-09, 09:26 PM
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If one wants to compare "gear ratios," he might consider using Bare Knuckle Brigade's Rabbit Applet to convert chain ring, cog, crank arm and tire sizes into a meaningful number, such as "gear inches."

https://software.bareknucklebrigade.c...it.applet.html

I presently ride a 39t X 17t combo on 23mm tires, which corresponds to 60.3 gear inches and allows me to cruise 15mph at 84rpm.

I presently have a new frame in the making, and on the new bike I will ride a 44t X 19t combo on 25mm tires, which corresponds to 61.1 gear inches.

The OP's original 48t X 18T combo gave him 70.1 gear inches, and his new combo of 44t X 18t will put him at 64.2 gear inches (assuming 23mm tires).

For me, 72 gear inches represents the highest "gear ratio" at which I can stop without skidding and without brakes.

Many fixed gear mountain bikers consider 63 gear inches the "do everything" gear ratio, and I agree.

The common 48t X 16t combo corresponds to 78.8 gear inches.

I have in the past ridden 53t X 17t, or 81.9 gear inches, and this represents the largest gear ratio I can push with any practicallity.

I presently get around town as fast at 61 gear inches as I ever did at 82 gear inches.
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Old 07-09-09, 09:29 PM
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48:18, flats are great, hills are a bit of a struggle but not impossible.
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Old 07-09-09, 09:44 PM
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what is the most typical crank length? gain ratio is even better!
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Old 07-09-09, 10:14 PM
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soul05
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165 probably
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Old 07-09-09, 10:16 PM
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48/16 fixed commuter, 34/17 ss mtb
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Old 07-09-09, 10:28 PM
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Originally Posted by das_pyrate View Post
48/16. not good for skidding.
Terrible, came with my pista and was painful. But I've gotten used to it now so not so bad.
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Old 07-09-09, 10:36 PM
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46/16 for the flat areas
46/18 for hilly areas.....Definately not a big enough gear for flat areas where I'll spin out using this.
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Old 07-09-09, 10:46 PM
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42/17 mountain goat gearing. need a 15 cog. ss, too much downhill spin for fixed.
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