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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 01-07-09, 11:18 AM   #1
52x15
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15/17 fixed/fixed?

is it possible to run a fixie/fixie setup on a fluip-flop hub with a 15t cog on one side and a 17t cog on the other or would that require a tensioner?? I'm not particularly fond of tensioners and would prefer to avoid using one, by the way I don't have horizontal dropouts.

Thanks in advance!
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Old 01-07-09, 11:32 AM   #2
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no.
and you can't use a tensioner on a fixed gear
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Old 01-07-09, 11:39 AM   #3
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Originally Posted by bw286 View Post
no.
and you can't use a tensioner on a fixed gear
you're either being sarcastic or you're thinking of the type that bolt onto the rear derailleur hanger, right?
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Old 01-07-09, 11:42 AM   #4
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I think a two tooth difference could be taken up by sufficiently long horizontal dropouts, which you don't have. I think your only other option is the ENO hub. Don't know how much adjustment that has, but it costs a good bit more.
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Old 01-07-09, 11:50 AM   #5
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you're either being sarcastic or you're thinking of the type that bolt onto the rear derailleur hanger, right?
he deoesn;t have horizontal dropouts, so he's eitherthinking about something like this:

or a moron,

unless you can think of a way to use the other kind on vertical dropouts
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Old 01-07-09, 12:04 PM   #6
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Do you have vertical dropouts? I have a feeling that you actually do have horizontal dropouts, but you are confusing that term with track ends. Pics please.
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Old 01-07-09, 01:00 PM   #7
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inteweb confusion at it's finest
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Old 01-07-09, 01:01 PM   #8
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I run a 18/15 on my fuji and it works fine. make sure you have long enough drop outs.
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Old 01-07-09, 04:28 PM   #9
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Quote:
Originally Posted by 52x15 View Post
is it possible to run a fixie/fixie setup on a fluip-flop hub with a 15t cog on one side and a 17t cog on the other or would that require a tensioner?? I'm not particularly fond of tensioners and would prefer to avoid using one, by the way I don't have horizontal dropouts.
Not without long horizontal dropouts:

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Old 01-07-09, 04:43 PM   #10
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You would need .5" usable dropout space for it to work.
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Old 01-07-09, 05:36 PM   #11
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You would need .5" usable dropout space for it to work.
You only need 1/4".
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Old 01-07-09, 06:04 PM   #12
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I run 16/18 on a bike w/ track ends.
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Old 01-07-09, 06:06 PM   #13
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Quote:
Originally Posted by JohnDThompson View Post
Not without long horizontal dropouts:

http://os2.dhs.org/~john/campy-pista-do.jpg
That picture is of a pair of track ends, not horizontal dropouts.
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Old 01-07-09, 06:41 PM   #14
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You only need 1/4".
False. Two additional teeth are equivalent to 1" of additional chain wrap or about 1/2" difference in the location in the dropouts/ends. If they were off by a single tooth, then you would be correct.
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Old 01-07-09, 08:11 PM   #15
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If you were to make a thread titled "most incorrect and patently wrong answers of all time" this would be ****ing it. God **** you bikeforums.
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Old 01-07-09, 08:33 PM   #16
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I'm ordering omakase this evening. Looking forward for some blue fin tuna.

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Old 01-07-09, 08:48 PM   #17
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dood you cant talk about other forums here, youll get bannnnnned
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Old 01-07-09, 09:35 PM   #18
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Yup

Quote:
Originally Posted by HandsomeRyan View Post
That picture is of a pair of track ends, not horizontal dropouts.
Track ends are a subset of "horizontal dropouts."
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Old 01-07-09, 09:45 PM   #19
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^Fail. Track ends are not dropouts.

OP, can you post a pic of your dropouts/track ends?
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Old 01-07-09, 10:13 PM   #20
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Picture please.

And I'm somewhat amazed by the amount of fail contained in this thread.
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Old 01-07-09, 10:19 PM   #21
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Originally Posted by darksiderising View Post
False. Two additional teeth are equivalent to 1" of additional chain wrap or about 1/2" difference in the location in the dropouts/ends. If they were off by a single tooth, then you would be correct.
Two teeth add only 1/2" of extra wrap because the chain only goes around half the cog. Divide in half again because of the chain going from cog to chainring twice to get 1/4".

Or read http://www.sheldonbrown.com/fixed.html#flipflop (1/8" per tooth)
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Old 01-07-09, 10:23 PM   #22
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You'll need a White Industries ENO hub.
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Old 01-07-09, 11:23 PM   #23
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Quote:
Originally Posted by stedalus View Post
Two teeth add only 1/2" of extra wrap because the chain only goes around half the cog. Divide in half again because of the chain going from cog to chainring twice to get 1/4".

Or read http://www.sheldonbrown.com/fixed.html#flipflop (1/8" per tooth)
Right you are. I am a doofus. Learning is fun.
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Old 01-07-09, 11:34 PM   #24
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Ok, so just to add fuel to the fire...what about NON-vertical drops using a chain-tensioner? I have a flip-flop hub & have thought about adjusting the gearing & have seen pics/posts regarding the goodspeed chain tensioner...

Is this crap? Am I showing how new I am? Or just missing something? (and yes there are other options & a combo available).
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Old 01-07-09, 11:42 PM   #25
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Ok, so just to add fuel to the fire...what about NON-vertical drops using a chain-tensioner? I have a flip-flop hub & have thought about adjusting the gearing & have seen pics/posts regarding the goodspeed chain tensioner...

Is this crap? Am I showing how new I am? Or just missing something? (and yes there are other options & a combo available).
Are you running fixed? If yes, then you can't run a tensioner. If single-speed, then yes.
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