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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 08-17-14, 08:45 PM   #1
howeeee
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building a fixed gear, must have frame with horizontal dropouts?

So I have been told you can only use a frame with horizontal drop outs, the reason being obvious. But the other day I saw a sweet fixed gear build, locked up outside this cafe I go to. When I took a good look at it I saw it had vertical drop outs and used a tensioner to tighten the chain.

Anyone have an opinion on how this set up works?

Last edited by howeeee; 08-17-14 at 08:49 PM.
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Old 08-17-14, 08:47 PM   #2
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The bike you saw on the street was a single speed not a fixed gear.

You can ride fixed with vertical dropouts but you have to figure out the magic gear ratio and can't adjust chain tension.

Last edited by hairnet; 08-18-14 at 11:17 AM. Reason: ratio not ration
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Old 08-18-14, 05:38 AM   #3
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Or an eccentric hub or bottom bracket.
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Old 08-18-14, 08:57 AM   #4
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Well you could but then you'd have to use a chain break and keep taking out links and no one wants to do thst kind of work!
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Old 08-18-14, 09:04 AM   #5
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^^You'd have to do it once just to get the tension correct.... I've had to do that with every bike chain I've ever had.
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Old 08-18-14, 09:55 AM   #6
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Quote:
Originally Posted by howeeee View Post
When I took a good look at it I saw it had vertical drop outs and used a tensioner to tighten the chain.
Anyone have an opinion on how this set up works?
You really need to read Sheldon Brown on FG conversion:

"You CanNOT use any sort of pulley type chain tensioner on a fixed gear bike!"
-S. Brown

Fixed Gear Conversions

-Bandera
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Old 08-18-14, 10:10 AM   #7
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Google "magic gear calculator".



ps: I've done this. It can be a fun little project or a huge PITA, depending on your willingness to tinker and tolerance for very limited gear ratios.
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