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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 08-15-12, 12:48 PM   #26
ganapati
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With urban riding, remember that you often need to thread the needle at slow speeds. If you have to mash through those slowdowns, your stability will suffer and you may end up trackstanding under a cement truck.
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Old 08-15-12, 01:58 PM   #27
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Way too high for urban. Especially NYC. You got a deathwish? You looking to have double knee replacement in your early 30s?

My gearing is 48x15 fixed, but I live rural and most of my rides are traffic light/stop sign free and rolling hills. For me it's a fitness thing. The only strain is getting started, but once I'm up to speed it's 90-120 rpm consistantly. Can't imagine trying to take off from traffic lights and navigating NYC w/the gearing in your post. Like others have suggested try putting a 17, 18 or 19t cog w/t 48. Makes much more sense for your environment and terrain.
After seeing the hills in Nashville, I don't think I'd even be that high on the gearing.
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Old 08-15-12, 02:16 PM   #28
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48x15 in the city doesn't sound like much fun
I like 48x16 or 48x17. I loose a lot of top end with 17 but if it's heavy traffic, it's better than the 16.
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Old 08-15-12, 02:17 PM   #29
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48x16 wasn't fun when I was running it.

I like 49x18 imo.
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Old 08-15-12, 02:21 PM   #30
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48x16 wasn't fun when I was running it.

I like 49x18 imo.
+1

I recently switched my Dodici from 49/18 to 49/17. After one ride, I switched back to 49/18.
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Old 08-15-12, 02:23 PM   #31
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48x16 wasn't fun when I was running it.

I like 49x18 imo.
What do you end up running on the track?
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Old 08-15-12, 02:24 PM   #32
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What do you end up running on the track?
49x16 warm up
49x15 F200M

(I also use a completely different fixed for commuting, and a different one for track)
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Old 08-15-12, 03:41 PM   #33
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48x16 wasn't fun when I was running it.

I like 49x18 imo.
That would be a bit too limiting in top end for me.
48x17 is similar and that feels good. I guess it depends on riding style and topography.

48x16 has been perfect for running around as well as riding with a friend, pacelining.
It's not as good in heavy traffic otherwise
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Old 08-15-12, 03:55 PM   #34
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47/17 over here. I am able to hold ~22 mph real easy.

spin to win.
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Old 08-15-12, 03:56 PM   #35
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I ride around Chicago (flat, heavy traffic) and the northern burbs (mild hills, less traffic) every day, and I rode around Austin (moderate traffic, lots of hills) with 48/17 and love it.
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Old 08-15-12, 03:59 PM   #36
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8.4 meters development.

Even Eddy could only push 7.9m.




Not to be a jerk, but if it's too big for Eddy, it's probably too big for you.
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Old 08-15-12, 05:08 PM   #37
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After seeing the hills in Nashville, I don't think I'd even be that high on the gearing.
Hey Chicago...that's where I started cycle-commuting! 25 years ago. No bike lanes in those days. Then Mayor/cycle-commuter Daley got elected and the rest is history. If I was commuting in Chi nowadays I'd use 46x16 fg. But, I'd have a Surly Pugsly w/2.35 studded Nokias, too.

Don't live in Nashville, but 35 miles SW. Past Franklin and Leiper's Fork out where the Natchez Trace Parkway crosses Natchez Trace Road. There're a few 18-25% gradients out here, but I know all the ways around them. Sometimes, I'll climb one and do switchbacks just to stay sharp w/that skillset, though. Nighttime fg rides on the NTP are the best. One can do 40 miles and not have a single car pass.
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Old 08-15-12, 06:25 PM   #38
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85 gear inches 48/14. old school marin hybrid converted into single-speed. my friend who's a bike messenger rides 56/16 fixed gear and rides brakeless. I think he is crazy and he is fast. i guess bike messenger are really hard to pass and beat. his bike is really like less than 15 pounds super light mavic wheel and IRO bike frame weighs like 3 pounds.
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Old 08-15-12, 06:26 PM   #39
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i'm 24. i hope i don't feel pain when i hit 30.
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Old 08-15-12, 06:31 PM   #40
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old school marin hybrid converted into single-speed.
Even more reason to use lower gears

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my friend who's a bike messenger rides 56/16 fixed gear and rides brakeless.
Lots of people do lots of things, that doesn't mean you should too.
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Old 08-15-12, 06:42 PM   #41
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your right. might do down to a 48/16 for the winter. rode 42/16 for like 1 yr then 42/14 for like 4 months and for this summer went up to a 48/14. my leg is spinning out the 48/16 easily and riding at 110-120 cadence only reason i switched to 48/14 down to like 90-100 lol.
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Old 08-15-12, 06:49 PM   #42
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your right. might do down to a 48/16 for the winter. rode 42/16 for like 1 yr then 42/14 for like 4 months and for this summer went up to a 48/14. my leg is spinning out the 48/16 easily and riding at 110-120 cadence only reason i switched to 48/14 down to like 90-100 lol.
You realize thats like 28mph right?
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Old 08-15-12, 06:53 PM   #43
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yes np. i only ride on flat road will go down to 48/16 or 42/14.
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Old 08-15-12, 06:55 PM   #44
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i'm 24. i hope i don't feel pain when i hit 30.

My pain all came about when I hit 40. Now at 47, it's all about trying to survive
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Old 08-15-12, 06:56 PM   #45
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yea 48/16 not bad if you're fit.
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Old 08-15-12, 06:56 PM   #46
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I ride 48-17 because I'm halfway between being a jackass kid and a boring adult.
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Old 08-15-12, 06:57 PM   #47
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always feels easier to ride in the summer so go higher gear but then when winter comes gear down.
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Old 08-15-12, 06:57 PM   #48
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i'm 24. i hope i don't feel pain when i hit 30.
I've felt pain plenty of times before I hit 30 two years ago.
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Old 08-15-12, 07:00 PM   #49
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Probably spinning out down hill, I run 45 /16 , I've run 48/15 for a year and it did hurt my knees, but I live in a high traffic area with lots of lights so slightly gearing down felt nice
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Old 08-15-12, 10:50 PM   #50
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yea 48/16 not bad if you're fit.
It's not about being fit. I also refuse to believe your rolling average is 28mph.
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