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 Post subject: O Symmetric Users
PostPosted: Wed Aug 08, 2012 7:52 pm 
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Joined: Mon Dec 28, 2009 8:30 pm
Posts: 5389
Location: Bay Area
This might sound weird in the road thread, but what do the people that use these on their roadies use on other bikes i.e. cross or mtbs? I want to get the same feeling on all of them, but there is simply no way (I've tried) to get MTB or cross versions in the US.

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 Post subject: Re: O Symmetric Users
PostPosted: Wed Aug 08, 2012 10:04 pm 
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Joined: Wed Dec 14, 2011 8:20 pm
Posts: 214
Their available in EU. Just have someone buy them and send over to US.

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 Post subject: Re: O Symmetric Users
Posted: Wed Aug 08, 2012 10:04 pm 


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 Post subject: Re: O Symmetric Users
PostPosted: Wed Aug 08, 2012 11:40 pm 
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Joined: Thu May 29, 2008 12:22 am
Posts: 605
Not quite sure why you can't get them in the US if they're available elsewhere. Have you tried contacting Osymetric USA?


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 Post subject: Re: O Symmetric Users
PostPosted: Thu Aug 09, 2012 1:29 am 
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Joined: Mon Feb 19, 2007 7:26 am
Posts: 2056
Location: Atlanta, GA, US
I understand Osymetric USA bought the rights to the design and are having the rings manufactured in the US instead of importing them. It looks like they haven't made it to manufacturing MTB rings yet.

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 Post subject: Re: O Symmetric Users
PostPosted: Thu Aug 09, 2012 11:13 am 
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Joined: Sat Jun 23, 2007 12:41 am
Posts: 1703
I'm curious...ShimaNo's Biopace failed miserably years ago, so why is O Symmetric any different?

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 Post subject: Re: O Symmetric Users
PostPosted: Thu Aug 09, 2012 1:38 pm 
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Joined: Wed Jun 22, 2011 9:39 pm
Posts: 147
@wingnut

they are effectively 90degrees out of phase with biopace. A few other tweaks on shape etc, but thats the crux of it. bigger gear in the power phase, smaller one at the dead spots.


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 Post subject: Re: O Symmetric Users
PostPosted: Thu Aug 09, 2012 1:49 pm 
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Joined: Tue Apr 12, 2011 8:08 am
Posts: 2292
Location: Pedal Square
Machinenoise, really? Did biopace have a higher gear in the dead spots? I seem to recall it wasn't like this, but it's been a long time ...

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 Post subject: Re: O Symmetric Users
PostPosted: Thu Aug 09, 2012 1:53 pm 
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Joined: Mon Jan 24, 2011 8:09 pm
Posts: 919
Wingnut wrote:
I'm curious...ShimaNo's Biopace failed miserably years ago, so why is O Symmetric any different?


Right, what the above poster said. Biopace had it off 90 degrees. Where qrings and orings have a different approach each.

I swear by my qrings. I might not be faster, but getting rid of the dead spot, especially on climbs, made a big difference for me. Never go back to round rings personally.

Not so sure about the osymmetric, they are the extreme of qrings. Harder to setup also.


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 Post subject: Re: O Symmetric Users
PostPosted: Thu Aug 09, 2012 2:24 pm 
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Joined: Mon Dec 28, 2009 8:30 pm
Posts: 5389
Location: Bay Area
Lets not start a debate about ring shapes.

I contacted the US distro with 0 response but the above posters are correct. I also received a reply from a Euro distro that used to carry the MTB version and they pretty much can't get them anymore because of how unpopular they were. Apparently the bumpiness of mtb shifting when combined with the shape just caused too many chains to drop.

I was maybe thinking of just getting Q-rings for the MTB and trying to get the closest orientation, but I'm still curious as to what O-Sys users do in this situation.

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 Post subject: Re: O Symmetric Users
PostPosted: Thu Aug 09, 2012 5:43 pm 
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Joined: Mon Oct 15, 2007 9:28 pm
Posts: 1229
Get in touch with Tom Slocum- http://www.hscycle.com/
He can make you some. They will be much higher quality than osymetric rings too.

KWalker wrote:
Lets not start a debate about ring shapes.

I contacted the US distro with 0 response but the above posters are correct. I also received a reply from a Euro distro that used to carry the MTB version and they pretty much can't get them anymore because of how unpopular they were. Apparently the bumpiness of mtb shifting when combined with the shape just caused too many chains to drop.

I was maybe thinking of just getting Q-rings for the MTB and trying to get the closest orientation, but I'm still curious as to what O-Sys users do in this situation.


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 Post subject: Re: O Symmetric Users
PostPosted: Fri Nov 23, 2012 12:52 pm 
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Joined: Sun Sep 19, 2010 10:19 pm
Posts: 398
Any SRAM users care to share their experience with Osymmetric installation? I've got a friend who is having difficulty tuning it to his Force bike, probably also due to his small frame, chain angle. I am keen on it too.


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 Post subject: Re: O Symmetric Users
PostPosted: Fri Nov 23, 2012 10:51 pm 
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Joined: Wed Jun 22, 2011 9:39 pm
Posts: 147
Yongkun, what sort of problems?? I've never used SRAM (full stop) but have heard of issues with it and o-symmetric. I've setup and used them on about 6 different bikes now, and know about most of the issues. Front derailleur trimming does help on some bikes, and the position of the derailleur due to the tube angle or braze-on position can affect their usage. Most problems can be fixed though.


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 Post subject: Re: O Symmetric Users
PostPosted: Sun Nov 25, 2012 10:24 am 
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Joined: Wed Dec 10, 2008 2:23 am
Posts: 55
Does osymetrics help with climbing? i know that the power section has more teeth so it makes more power but is harder to pedal. this makes me think qrings maybe better soley for climbing purposes


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 Post subject: Re: O Symmetric Users
PostPosted: Mon Nov 26, 2012 9:08 pm 
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Joined: Tue Jan 13, 2009 2:35 am
Posts: 602
A buddy of mine here in the U.S. has them and likes them a lot.

PM me if you want me to try to get you info on how he got his.


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 Post subject: Re: O Symmetric Users
Posted: Mon Nov 26, 2012 9:08 pm 


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 Post subject: Re: O Symmetric Users
PostPosted: Tue Nov 27, 2012 6:37 am 
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in the industry
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Joined: Sun Jul 29, 2012 2:59 pm
Posts: 855
Location: Ruidoso, NM
s4one wrote:
Does osymetrics help with climbing?


Ask Froome and Wiggins...

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