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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)

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Old 01-20-09, 03:22 PM   #1
untuned
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Best Gear Ratio 48:16 or 44:16 or.....

........40:16

I currently have a 48:16 set-up......most of the terrain I ride is fairly flat.......the problem comes in the hilly areas, where I sometime feel like dying........but I like the speed I can gain in that gear........
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Old 01-20-09, 03:29 PM   #2
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I have 48x17 and I want to get a 15t fixed cog on the other side of my hub for races and stuff
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Old 01-20-09, 03:30 PM   #3
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I think spinning is better than mashing so i suggest you use the 44:16. It's a good ratio and you can still go at a good clip but you'll enjoy the hills more. I'm running only 69 inches.
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Old 01-20-09, 03:38 PM   #4
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Everyplace I go is hilly. No matter the route I take from work, at some point I have to face the 600' ridge I live on top of. 2 routes up it are around 2.25 miles of persistant climbing. 1 route is a 1/3mi, 15% grade. The last route is a 1/2mi climb that isn't much better than that 15%.

I have a 44/18, and although it's pretty lame for the flats, I don't feel like I'm going to die at the top of a 2+ mile long 6% climb.
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Old 01-20-09, 03:42 PM   #5
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would a 46/16 be the same as 48/18? sorry, i am still trying to wrap my head around gear ratio's. i live in the Hill Section, and after 3 or 4 blocks i hacve to walk the last 2 or 3.
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Old 01-20-09, 03:44 PM   #6
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An important point that can come up in this discussion is, are you skidding at all?
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Old 01-20-09, 03:45 PM   #7
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"would a 46/16 be the same as 48/18? sorry, i am still trying to wrap my head around gear ratio's. i live in the Hill Section, and after 3 or 4 blocks i hacve to walk the last 2 or 3."

The Gearing Primer
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Old 01-20-09, 03:54 PM   #8
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would a 46/16 be the same as 48/18? sorry, i am still trying to wrap my head around gear ratio's. i live in the Hill Section, and after 3 or 4 blocks i hacve to walk the last 2 or 3.
46/16 = 76.9 inches
48/18 = 71.4 inches

My wimpy 44/18 = 65.4 inches
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Old 01-20-09, 03:56 PM   #9
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"would a 46/16 be the same as 48/18? sorry, i am still trying to wrap my head around gear ratio's. i live in the Hill Section, and after 3 or 4 blocks i hacve to walk the last 2 or 3."

The Gearing Primer

thanks that helped a lot. i do have another question, does having lower gear inches make it easier to pedal on hills, but slower on flats?
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Old 01-20-09, 03:58 PM   #10
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Quote:
Originally Posted by untuned View Post
I currently have a 48:16 set-up......most of the terrain I ride is fairly flat.......the problem comes in the hilly areas, where I sometime feel like dying........but I like the speed I can gain in that gear........
Experiment, and come up with a compromise gear. Keep the 48 ring and experiment with 17, 18, & 19 cogs.
No one here can tell you what the 'right' gear is for you. Only you can determine that.
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Old 01-20-09, 04:03 PM   #11
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Quote:
Originally Posted by Meepers View Post
thanks that helped a lot. i do have another question, does having lower gear inches make it easier to pedal on hills, but slower on flats?
You are correct. Less gear inches will make it easier to skid, climb hills and track stand. The downside is you will spin out sooner on the flats.

16x48 sounds like a stock Pista, 81 G.I. requires some pretty big legs unless you live in a flat area

Last edited by resetjet; 01-20-09 at 04:06 PM.
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Old 01-20-09, 04:07 PM   #12
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Quote:
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thanks that helped a lot. i do have another question, does having lower gear inches make it easier to pedal on hills, but slower on flats?
Correct. Slower is a relative term though, you can still go fast but you'll be spinning more.
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Old 01-20-09, 04:39 PM   #13
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Feel wimpy running 38x17 @ 61.1 inches... only way to get up the hill with studded tires and snow.
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Old 01-20-09, 04:41 PM   #14
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well 44:16 is 8 skid patches if you use both feet.... 45:16 is 32....

i prefer 45:16
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Old 01-20-09, 04:54 PM   #15
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Drop outs or track ends?
w/ a fixed/fixed flip flop you can use 2 gears!
I have a double cog 19/17 and it is easy to change with the same chain length and horizontal drop outs.
Though, I guess it would take some time.
also, keep your tires hard and it might help take out some of that dying feeling.

here's a nice chart
http://home.i1.net/~dwolfe/gerz/
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Old 01-20-09, 05:07 PM   #16
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I'm running 48:16 and I really like it. I'm not having to mash all the time, and I can develop pretty good speed.
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Old 01-20-09, 05:15 PM   #17
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I'm running 48:16 and I really like it. I'm not having to mash all the time, and I can develop pretty good speed.
Sucks it's only 1 skid patch
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Old 01-20-09, 05:24 PM   #18
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Play with 'Rabbit' to find a suitable gear and skid patches.

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

I'm thinking about switching to something a little lower myself. Most likely 47x20 (40 skid patches!)
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Old 01-20-09, 05:26 PM   #19
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There are alot of numbers being thrown around here. I cant really explain how o find your ration other than telling you to try different ratios. I bought a handfull of cheap cogs when I was just getting into FG and started with the lowest gear ratio I could to get used to riding these style bikes. I went to a higher and higher gear as I "porgressed" in skill until I found the sweet spot between speed, control, and being able to climb. I live in colorado so hills are very common. I ride a 48x16 on my main commuter. I am trying to find a good cruising gear for my newest addition which I am thinking will land in the 48x17 or 18 range.
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Old 01-20-09, 05:27 PM   #20
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I just run a front brake and not worry about skid patches.
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Old 01-20-09, 05:27 PM   #21
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You are correct. Less gear inches will make it easier to skid, climb hills and track stand. The downside is you will spin out sooner on the flats.

16x48 sounds like a stock Pista, 81 G.I. requires some pretty big legs unless you live in a flat area
you are correct. i have a stock Pista, 48/16. i want to get a new chain ring, and cog. i was thinking it would be cheaper to get a smaller chaining and keep the stock cog, but now with a little help i see it would be better to get a bigger cog and a new chain ring. and keep my chain ring at 48 teeth. thanks for the help. that really did help me out a lot. i will probably order tomorrow now instead of keep thinking it over.
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Old 01-20-09, 06:51 PM   #22
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you are correct. i have a stock Pista, 48/16. i want to get a new chain ring, and cog. i was thinking it would be cheaper to get a smaller chaining and keep the stock cog, but now with a little help i see it would be better to get a bigger cog and a new chain ring. and keep my chain ring at 48 teeth. thanks for the help. that really did help me out a lot. i will probably order tomorrow now instead of keep thinking it over.
It's much cheaper to buy a couple of rear cogs, the truvativ cranks on your bike require weird chainrings than can be pretty expensive. If you really want to change chainrings you might be better off getting a sugino messenger crankset and new BB from ben's. I think the messenger's are going for around $90 with the chainring included. Maybe someone can tell you if there is a good replacement chainring for the truvativ's or another crankset that will fit the powerspline BB on your Pista.
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Old 01-20-09, 06:52 PM   #23
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My wimpy 44/18 = 65.4 inches
<< Me too. Legs are pretty weak, but I can take of fast and skid easily but in long flat or downhill I wind out.

Last edited by Hagisan; 01-21-09 at 11:45 AM.
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Old 01-20-09, 07:05 PM   #24
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thanks that helped a lot. i do have another question, does having lower gear inches make it easier to pedal on hills, but slower on flats?
You will essentially be slower on the flats and descents because your bike can only go as fast as your legs allow. You will eventually reach a peak RPM and not be able to go faster than that until you gradually build your cadence ability.
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Old 01-20-09, 07:18 PM   #25
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81 G.I. requires some pretty big legs unless you live in a flat area
It does. I'm rocking 52:17 which is about 83 G.I. in an area with plenty of flat and some moderate hills. If I lived somewhere really flat I'd probably run a taller gear, but 83 is about as much as I can mash on hills. Also use a brake because it'd explode my knees otherwise.
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