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Gear Ratios(26 posts)

Gear Ratiossievers11
Jan 22, 2004 8:13 AM
I have a 48/16 with 170mm cranks and 700x21 tubulars. That is a 78 inch gear. Putting me at 18-19 mph at 80 rpm.

I am just curious what others are using on their fixie. This ususally puts me in a mashing situaltion on hills but I like the extra speed on the flats and downhill.
re: Gear Ratiosstratoshark
Jan 23, 2004 6:02 AM
I run 45/16 and am considering a 17 cog. I grunt up some of the hills but the combination works well on 95% of my routes.
48/16/170mm cranks/700x23c tires (nm)cmgauch
Jan 23, 2004 7:29 AM
42x16, 170mm cranks, 700x25 tires. (nm)jtferraro
Jan 23, 2004 7:46 AM
49x19, 165mm cranks, 23x700c tubulars.... (nm)rcmann
Jan 23, 2004 8:24 AM
39x16, 165mm, 700x25c (nm)soulFixed
Jan 23, 2004 8:52 AM
44/18 170mm 700x26 nmPdxMark
Jan 23, 2004 9:28 AM
42/16; 175mm cranks; 700x25 (nm)Starliner
Jan 23, 2004 10:23 AM
48/16/170mm cranks/700x23c tires - me too (nm)"Macho Man Savage
Jan 23, 2004 10:45 AM
42/18, 170mm, 700x32 cross tires (nm)Alex-in-Evanston
Jan 23, 2004 11:14 AM
42x16 - 26mm OR 42x18 - 35mm, both w/ 175'spauly
Jan 23, 2004 12:02 PM
44x16, 6' tall w/170mm cranks, butStraightblock
Jan 23, 2004 1:35 PM
I'm going to switch to a 42 or a 17 for a while until I ride back into spring fitness. Tires are 700x23, 25's won't clear the fork crown.
42x16 fixed/170 mm cranks/27"x1 1/4" tires nmOverStuffed
Jan 23, 2004 2:13 PM
43/16-14 FlipFlop 170mmNoCoasting
Jan 23, 2004 4:40 PM
I'm running the 16 tooth side this winter because I thought it would help increase my cadence but I just can't seem to consistently pedal faster than 90-100 rpm so basically I just go slower. I guess 90-100 is my comfort zone. If I put a bigger cog on, I'd go slower still. What's up with that?
46x18, 175mm cranks, 700x23 tires.scrublover
Jan 23, 2004 4:53 PM
with 40, 42, 44, and 48 generic unramped rings....

and 14, 15, 16, and 17 tooth cogs waiting in the wings to poay around with gearing as i (hopefully) grow stronger with the fixie love.

good so far, but i've only done some long rolling hills; no steepy stuff just yet. we shall see.
42x15/17 flip flop[17 winter]; 172.5; 700x25Overhill
Jan 23, 2004 5:00 PM
45x17, 170, 23c 42 x 16 ,170, 23c 39 x 16, 170, 32c nmDave Hickey
Jan 23, 2004 5:09 PM
re: Gear Ratiosukiahb
Jan 23, 2004 8:41 PM
44x17, 170mm, 27x1 1/8
45/16 fixed, 42/18 freeDave_Stohler
Jan 23, 2004 11:13 PM
My Fixte/SS is a dual-purpose bike for me: I can run on the canal MUT in fixed mode, or flip it over for around-the-area riding (traffic, decent hills). I use Armadillo Nimbus tires in 38 width-not much drag when they are at 90 psig, but they can be lowered for better ride. My 2-ring setup gives me a perfect chainline either side on a no-dish flip-flop wheel. The larger ring is in the inner position, and the axle sits only about 1/16" apart in the dropouts.
re: Gear RatiosWelshboy
Jan 24, 2004 12:56 AM
49x18 = 73.5" which is just a bit too heavy for the fairly hilly area where I live (South Wales).

Because I'm using a modified road bike then I haven't got a lot of adjustment in the dropouts so I can't lower down to 72". The next workable gear is something like a 69" which is too low for the downhills for me (I'm not the greatest spinner but I am getting better).
42/16(fixed) 42/17(free) 170mm 700c-28mm (nm)ss-nyc
Jan 24, 2004 7:09 AM
45*19 with 170 mm cranks and 700*25c tiresscabber
Jan 24, 2004 5:25 PM
gets the track spin back in form!
39/16 fixed 700cx32 [nm] 63 gear inches.PaulNYC
Jan 25, 2004 8:41 AM
46/15 165mm 700x23trackmike
Jan 25, 2004 9:59 AM
i'm surprised i'm the only one with short cranks. my bike has such steep geometry i think if i ran 175's i'd be kicking the front hub. haha.
42X15, 170 mm cranks, 700-28 front, 700-32 rear . nmdzrider
Jan 26, 2004 3:36 PM
re: Gear Ratioscph_fxt
Feb 1, 2004 9:48 AM
well, in the old days you could race timetrials on fixed . everybody did the same gear 48x18, it was called middlegear. they might be crusty, but the old guys are actually on to something here. i really like it - perfect for my city - copenhagen. 48x18 170mm 700c x 25mm