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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 09-03-08, 12:34 PM   #1
JaeOne3345
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49x15,16,17: One Chain Length??

Yes I posted this is in track, but more people hit this forum, so excuse me if it bothers you...

As stated in the title, can anyone tell me whether or not I will be able to use one chain length with a 49T chainring and 15, 16, and 17t cogs? I would use the 17 for street, 16 for track warm up, and 15 for racing/training. I am new so I don't think I need a 50x15 yet.

I am trying to keep my options as simplified as possible. Would this be feasible if I set up the chain for the 49/17T combo at the front of the drop outs (still allowing some movement for removable of course). Basically wondering if 2 teeth at the cog necessitates a new chain. Hoping not.

Thanks for any help!
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Old 09-03-08, 12:38 PM   #2
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I have used 46x15/16/17 on the same chain length on my Rush Hour.
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Old 09-03-08, 12:39 PM   #3
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Yes you can (depending on the length of your dropouts of course)

Last edited by powers2b; 09-03-08 at 04:13 PM.
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Old 09-03-08, 12:43 PM   #4
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I didn't. You should be fine. I could probably run 14-17 if I wanted with plenty of room in the dropouts.
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Old 09-03-08, 12:43 PM   #5
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A lot is going to depend on your frame. Are the dropouts long or short? I just recently just set up two of my track bikes for my upcoming trip to the velodrome this weekend. The stock wheel had a 17t and it barely fit with the shortened chain, and was too tight. I ended up swapping wheels that is double fixed with a 15t on one side and a 16t on the other. In my case I would probably would add a link because with the 17t the chain was too tight and was a PITA to remove. Currently it has the 15t and isn't even to the middle of the dropouts. So basically it might work. The best option is to try it out!
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Old 09-03-08, 12:45 PM   #6
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and never ever run a chain tensioner on a fixed gear. don't listen to that.. but im sure you know that.
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Old 09-03-08, 01:02 PM   #7
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Thanks for the help everyone!

A derailer? No thanks.

Matt, did you specifically run the gears I am discussing? Thanks a lot!. Just being sure, not a smart ass.

In response to "try it out:" Yes I know but I wanted to make sure before I order a single chain or 2 new chains with my new equipment.

BTW one bike is a Mercier Kilo TT and the other is a 04 Fuji Track Pro

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Old 09-03-08, 01:05 PM   #8
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just make sure when it's on the 17t the wheel is as close to the front of the dropout as you can get it. you should be fine. i've been able to go from 20 to 16 without a new chain..
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Old 09-03-08, 01:07 PM   #9
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and never ever run a chain tensioner on a fixed gear. don't listen to that.. but im sure you know that.
True,
I was thinking freewheel for some odd reason.
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Old 09-03-08, 01:10 PM   #10
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For you dudes running flip flop track hubs, the direction of the tire is totally bogus right? I have a set of 700x23 clinchers in which there is a directional arrow, but all the literature I have read says tread on a road bicycle tire is fairly useless anyway.
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Old 09-03-08, 01:16 PM   #11
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I run my gatorskin "backwards" when I flip my wheel.. But I can't tell you for sure what real difference there would be.

And I ran 46x15/16/17 all on the same chain and my dropouts aren't extremely long.
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Old 09-03-08, 02:34 PM   #12
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Yes you can but you will need a derailer or other chain tensioning device.
(depending on the length of your dropouts of course)
rofl
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Old 09-03-08, 02:46 PM   #13
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I just put my Nagasawa together today, coincidentally with a 49x17 gearing and the wheel near the front of the range. I tried the same chain with 16 and 15, and yes, it does work. The Nagasawa has a relatively short adjustment range compared to some other frames.
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Old 09-03-08, 03:47 PM   #14
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Awesome info...thanks!

How much room do you have from the axle to the front of the drop outs with the 17 when the chain is at your preferred tension?

Now to find someone who will trade me a 49t for my 50t dura ace chain ring.
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Old 09-03-08, 05:04 PM   #15
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How much room do you have from the axle to the front of the drop outs with the 17 when the chain is at your preferred tension?
About 1/4"
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Old 09-03-08, 05:23 PM   #16
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Good lookin' out..
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Old 09-03-08, 07:02 PM   #17
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2t *may* require a new chain. Like others have said it really depends on the dropout length.
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