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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 07-21-09, 09:43 PM   #1
WMBIGS
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Redline monocog 29er gearing ?

Hi, I tried a few search's and found some needed info, but still have some questions. The stock gearing is 32/20. I am going to mount Bontrager 700x35 Select K's. Will be used for communting. Mostly flat depending on route. One way is 1.6 mi plus whatever I add on going home. I think the crank is 104 spacing. The chain ring is currently on the inside of the crank and close to the chain stay. With a bigger chain ring, it will mount to the outside of the crank. How do I space the rear cog out to keep the chain in line? What type of cog and where do I get them?
Thanks for the help, MikeB
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Old 07-21-09, 10:00 PM   #2
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I know they used to come with a 42t, so assume that would fit...
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Old 07-21-09, 10:06 PM   #3
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check the ss mountain bike love thread
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Old 07-22-09, 04:36 AM   #4
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I know they used to come with a 42t, so assume that would fit...
no.
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Old 07-22-09, 04:40 AM   #5
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Hi, I tried a few search's and found some needed info, but still have some questions. The stock gearing is 32/20. I am going to mount Bontrager 700x35 Select K's. Will be used for communting. Mostly flat depending on route. One way is 1.6 mi plus whatever I add on going home. I think the crank is 104 spacing. The chain ring is currently on the inside of the crank and close to the chain stay. With a bigger chain ring, it will mount to the outside of the crank. How do I space the rear cog out to keep the chain in line? What type of cog and where do I get them?
Thanks for the help, MikeB
You should be able to get the gearing you need without changing your chainring. BMX cogs cost $5. Buy several and experiment.
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Old 07-22-09, 08:30 AM   #6
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The biggest front ring you can use without swapping to the outside of the spider is a 36t; I know bc I just put one on my buddies Mono last week and it's the max size.

But they do have a cassette hub, so as mentioned already, you can swap cogs and play around a bit. As far as chainline goes, a lot of higher end cogs out there you can flip around for a 2mm chainline change. My surly 3/32 rear cog on my DJ can flip around to give you an incremental chainline adjustment.

I personally run 2:1 on my 29er: an 18t trials freewheel in the back and a 36t mono veloce up front. It kicks ass.
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Old 07-22-09, 08:34 AM   #7
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no.
Guess the internet was wrong then... maybe they were thinking Outcast.
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Old 07-22-09, 06:38 PM   #8
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Surly cogs are avaiable down to 13 tooth. That will give you 66 gear inches with your existing 32 tooth chainring and 35mm tires. A slick in the 2.2 inch range would up that to just over 70 gear inches.
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Old 07-22-09, 07:35 PM   #9
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Thanks everyone, I think I'll start with a 36 or 38 up front and fine tune with the rear. I am just getting back into it and not strong at all. Plus we get some major wind here, did a ride with 25 mph head winds to get home. Took my road bike to work and was using the 39 front and 24,21,19,17 in the rear.Thanks again, MikeB
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