New study on non-circular chain-rings.

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New study on non-circular chain-rings.

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jmechy

Post subject: Re: New study on non-circular chain-rings.

Posted: Tue Apr 10, 2012 5:18 pm

Joined: Wed Jun 04, 2008 3:18 am
Posts: 25

djm wrote:

AFAIK it is this one:
As round as round chain rings can be.

Those graphics are incredibly deceptive. At first glance I thought you were insane, as those were clearly ovalized. Then you look at them for a second and realize they are actually round... Clever of rotor to make it look like more people are using the q-rings.

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Gazelleer

Post subject: Re: New study on non-circular chain-rings.

Posted: Tue Apr 10, 2012 5:27 pm

Joined: Mon Nov 01, 2004 3:13 pm
Posts: 576
Location: €pe

More clever even is the way they hide that butt-ugly crank with those white graphics!

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my plastic bikes, 29ers & stable of old steel

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thewatchtech

Post subject: Re: New study on non-circular chain-rings.

Posted: Thu Apr 12, 2012 10:45 am

Joined: Sun Jan 28, 2007 12:34 pm
Posts: 41
Location: USA

So I can finally bust out the old BioPace mtb crankset from the 80s?!?

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DuncanS

Post subject: New study on non-circular chain-rings.

Posted: Thu Apr 12, 2012 1:05 pm

Joined: Thu Aug 12, 2010 4:42 pm
Posts: 23

djm wrote:

KWalker: Then the picture must be wrong.

AFAIK it is this one:

As round as round chain rings can be.

http://www.cyclingnews.com/features/pho ... ers/166443" onclick="window.open(this.href);return false;

djm, check the pictures in the story. These look pretty oval to me.

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Privateer

Post subject: Re: New study on non-circular chain-rings.

Posted: Thu Apr 12, 2012 3:41 pm

Joined: Thu Feb 03, 2011 2:28 pm
Posts: 356

Interesting that a recent pic of Wiggens has him back on round rings.

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MattSoutherden

Post subject: Re: New study on non-circular chain-rings.

Posted: Fri Apr 13, 2012 1:36 pm

Joined: Fri Jul 10, 2009 7:22 pm
Posts: 691
Location: London

Privateer wrote:

Interesting that a recent pic of Wiggens has him back on round rings.

I was umming and ahhing about a set of o-symmetrics a few weeks ago.

I wonder if Wiggo has really ditched them, or if he was maybe on a spare bike in the pic? Guess we'll see when Romandie starts.

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grid256

Post subject: Re: New study on non-circular chain-rings.

Posted: Fri Apr 13, 2012 3:29 pm

Joined: Tue Dec 15, 2009 8:32 pm
Posts: 290

If he's ditched them or not, I'm impressed with the generosity of the Sky mechanics to put up with those things. Complete nightmare, and I say that as a user and believer of ovalized rings.

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jever98

Post subject: Re: New study on non-circular chain-rings.

Posted: Mon Apr 30, 2012 9:22 am

in the industry

Joined: Wed Feb 18, 2009 12:02 pm
Posts: 432
Location: Geneva, Switzerland

Privateer wrote:

Interesting that a recent pic of Wiggens has him back on round rings.

At TdR he seemed to be back on them.

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power2max

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artray

Post subject: Re: New study on non-circular chain-rings.

Posted: Mon Apr 30, 2012 9:41 pm

Joined: Fri Oct 07, 2011 2:08 pm
Posts: 1366

His chain came off due to the flat spot on the rings when shifting at the front.

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KWalker

Post subject: Re: New study on non-circular chain-rings.

Posted: Tue May 01, 2012 1:13 am

Joined: Mon Dec 28, 2009 8:30 pm
Posts: 2951
Location: DC

artray wrote:

His chain came off due to the flat spot on the rings when shifting at the front.

No, it didn't. And they're really not that hard to setup with DA. I've run em and know quite a few that have and its MUCH easier than on a Sram front der.

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