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PostPosted: Tue Oct 21, 2014 9:27 pm 
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Joined: Thu Apr 28, 2011 1:21 am
Posts: 179
I'm trying to build a single speed out of a road frame that I have lying around. As a weight weenie, obviously I'm going to try to build it as light as possible. Here's the catch, I have absolutely no idea about parts from the single speed and fix gear world, and what is compatible or not. So, I would need some recommendations on parts and answers to some questions. Suggestions outside of my questions are more than welcome!

Before we begin, let me briefly list the parts I already have:

    2011 Defy Advanced frame set (uses BB86)
    Soul S2.0 Wheelset
    Planet X KCNC Brakes
    Easton EC90 TKO Handlebars
    WCS 4-AXIS Stem

What I still need are:

    Crankset
    Chain
    Brake Lever
    Spacers
    Cog
    Tensioner

Obviously the first question is, for the parts I still need, what are my lightest options? Concerning the crank, I'm adamant on getting one that uses only one chainring.

Is it necessary to even get an tensioner? If I can get away without one, I'd prefer not to use one so I may keep the weight down.

Concerning the stock rear derailleur hangar, in the case I do not need a tensioner, I would like to get rid of it. Where can I get a plate that will fill in the hole at the drop out?

Headset bearing cover, where can I get one with the least amount of stack height possible because I plan on slamming my stem.


Last edited by MNX1024 on Tue Oct 21, 2014 9:57 pm, edited 1 time in total.

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PostPosted: Tue Oct 21, 2014 9:53 pm 
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Joined: Mon Oct 06, 2014 2:03 pm
Posts: 23
If you don't want to run a chain tensioner then you would have to look for an eccentric bottom bracket. I don't know of any in BB86 but you might be able to use a converter and then a threaded eccentric bottom bracket, I'm not sure if it would be lighter than a tensioner but it would certainly look better :D .

As for the rest of the drivetrain, I would look for 1/8 chain/sprocket as there are more options so you can probably find a lighter option than looking at 3/32.


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Posted: Tue Oct 21, 2014 9:53 pm 


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PostPosted: Tue Oct 21, 2014 10:22 pm 
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Joined: Sun May 16, 2010 7:28 pm
Posts: 652
This is so 2007


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PostPosted: Tue Oct 21, 2014 11:57 pm 
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Joined: Fri Jan 03, 2014 7:37 am
Posts: 273
measure your chainstay length then go use google and figure out which ratios you'll be able to run without a tensioner.


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PostPosted: Thu Oct 23, 2014 4:39 pm 
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Joined: Thu Apr 28, 2011 1:21 am
Posts: 179
Thanks for all those that gave some suggestions. Looks like I won't be able to get away from the tensioner with the gear ratio I want....... At least I don't have to worry about replacing the rear derailleur hanger.

Anyway, any suggestions on some light weight parts, such as cranks and chains?

Which part decides the type of chain I should be getting, the cog or chainrings?

Out of curiosity, does 10/11 speed chainwork with single speed cranks?


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PostPosted: Thu Oct 23, 2014 7:38 pm 
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Joined: Tue May 23, 2006 9:39 pm
Posts: 351
another solution is to run a White Industries eccentric hub...

https://www.benscycle.com/p-1522-white- ... speed.aspx?

others have mentioned an eccentric bottom bracket, like the Bushnell one.

hope that helps.

_________________
- Parlee Z5 SLi + DA9070 + Enve 3.4 Tune/Dash hubs
- Independent Fabrication Ti FLW + Campy SR11 + Enve 3.4 CK hubs


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PostPosted: Thu Oct 23, 2014 9:31 pm 
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Joined: Wed Mar 19, 2014 3:18 pm
Posts: 152
Do not run a fixed gear with a chain tensioner it's simply not safe. 3/32 chains (10/11 sp) will work as long as you buy the right chainring/cog but 1/8 set ups last significantly longer. The whiteindustries hub is your best option because it also gets closer to a proper chainline.


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PostPosted: Sun Oct 26, 2014 2:44 am 
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Joined: Wed Apr 11, 2012 3:40 am
Posts: 461
Those WI hubs are the cleanest solution imo.


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Posted: Sun Oct 26, 2014 2:44 am 


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