Osymetric chain rings

Discuss light weight issues concerning road bikes & parts.
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JesseD
Posts: 343
Joined: Mon Jul 21, 2008 10:20 am

by JesseD

Anyone know if you can use an osymetric outer chainring with a round inner ring?

Been offered one for free but it's only the outer!

Thanks all

by Weenie


alibongo
Posts: 51
Joined: Fri Oct 29, 2010 11:35 am

by alibongo

Will you be drilling it to save weight?
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Glovetx
Posts: 9
Joined: Wed Jun 18, 2008 1:45 pm

by Glovetx

Not sure if you are supposed to but I did for a few weeks. It just felt really goofy (like pedaling with a square chainring) when going to the little round ring.

Machinenoise
Posts: 147
Joined: Wed Jun 22, 2011 9:39 pm

by Machinenoise

You can, but will feel horrible! If its for road, don't bother, and for TT just use a single ring up front! if nothing else its lighter!

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stella-azzurra
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Joined: Mon Jan 23, 2006 6:35 am
Location: New York

by stella-azzurra

It only feels that way for a few minutes eventually you muscles adjust. Just buy the other matching ring.
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JesseD
Posts: 343
Joined: Mon Jul 21, 2008 10:20 am

by JesseD

Think I might use it for TT's, just have to explain to the OH that as I have been given it for free I now need to build a TT bike as it will go to waste other wise! :D

Machinenoise
Posts: 147
Joined: Wed Jun 22, 2011 9:39 pm

by Machinenoise

stella-azzurra wrote:It only feels that way for a few minutes eventually you muscles adjust. Just buy the other matching ring.


I meant that it will feel horrible switching between the rings, and will likely take longer than you'd like to adjust on the fly.
Am a long term user but still prefer round ones on the road bike. Have a new 54t TT ring in the post! :)

Yeh you clearly need a TT bike for them otherwise all will be wasted :mrgreen:

:up:

Zigmeister
Posts: 921
Joined: Mon Jan 24, 2011 8:09 pm

by Zigmeister

It will really mess with your pedal stroke and the feel going from one to the other. You either need to run oval rings, or round rings. Don't go back and forth.

by Weenie


JamieL
Posts: 381
Joined: Tue Jun 21, 2011 1:05 pm

by JamieL

JesseD wrote:Think I might use it for TT's, just have to explain to the OH that as I have been given it for free I now need to build a TT bike as it will go to waste other wise! :D


Love this :up: . Got a new chainring so i need to build a bike to put it on...

Sounds very familiar.

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