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View Full Version : Rotor bike ovalized chainrings - anyone use or have used them?

dd74
10-04-2013, 10:26 PM
I'm just curious if they've made a big difference in your pedaling?

As is, I can only use the outer ring since I'm running newer Campy and the ovalized inner chainrings won't fit that style of Campy crank.

Thanks.
Louis
10-04-2013, 10:51 PM
There was some discussion of these during and shortly after the TDF. Do a search and you'll probably find the threads. Also, someone here had one for sale about that time.
dd74
10-04-2013, 10:52 PM
There was some discussion of these during and shortly after the TDF. Do a search and you'll probably find the threads. Also, someone here had one for sale about that time.
Cool. Thanks.
Louis
10-04-2013, 11:03 PM
Here's one thread:

http://forums.thepaceline.net/showthread.php?t=133107
dd74
10-04-2013, 11:05 PM
Funny, I'm reading that thread right now.
CunegoFan
10-04-2013, 11:08 PM
They work great if you are being paid to use them. Not so much if you are not.
dd74
10-04-2013, 11:09 PM
They work great if you are being paid to use them. Not so much if you are not.
Have you tried them?
WickedWheels
10-05-2013, 12:48 AM
Nah... I've worked on plenty and decided that I'd rather have functional shifting.

I think there is a place for them, however... a flat TT course when you can get into a rhythm and dial in the "oval" position
yashcha
10-05-2013, 02:16 AM
I have been using them for about three years now, first for cross, and now for road.

I think you either you love them or you hate them. I. Love how they feel, but hated how they shift. I recently changed my front derailleur from the old style sram red to the force22 yaw version. The shifting is dramatically improved, and now I have the benefits of the rotors without the crappy shifting.

They are really expensive, but you can find them used from time to time for about $100 for the pair.
savine
10-05-2013, 05:38 AM
Been riding these for the past five years and have them on all my bikes....in my opinion is obest thing since sliced bread. I've always since being a kid had knee pain and these being used combined with Speedplay pedals really help!
oldpotatoe
10-05-2013, 08:11 AM
They work great if you are being paid to use them. Not so much if you are not.

tee hee
witcombusa
10-05-2013, 08:28 AM
Flashing back to Shimano Biopace.....:eek:
Lewis Moon
10-05-2013, 09:02 AM
Notice that Wiggo and Froomie no longer use them. They basically saw no gain.
SolidSnake03
10-05-2013, 01:29 PM
Could have sworn Froome rode O-Symmetric *extreme version of Qrings* in this years tour that he won...
kgreene10
10-05-2013, 07:08 PM
Could have sworn Froome rode O-Symmetric *extreme version of Qrings* in this years tour that he won...

He did and apparently wasn't paid to do so.
kramnnim
10-05-2013, 07:20 PM
Sir Wiggo was back to round rings for the WC TT...can't find any pictures of Froome in the RR... (heh)
Lewis Moon
10-05-2013, 07:23 PM
He did and apparently wasn't paid to do so.

And where is the Osymetric ring that Wiggins used? "There wasn't any benefit," states Williams, "or if there is, there's not a lot in it, so Bradley is running a round 55 chainring rather than the 56 he and Froomey were using with Osymetric. The ring wasn't as stiff as a Shimano, so there was the possibility of some flex when you were sprinting on it or climbing. Plus the shape of the ring meant the rear mech was moving forward and back a lot to take up the slack.

"There might have been some benefit in it from a psychological point of view, but I think for there to be any benefit at all you need to be a tall rider, you needed to sit well back in the saddle and have your hip and knee at a certain angle to get anything from it, so someone like Sergio (Henao) would end up fighting to get the ring over the dead spot."


Read more at http://www.cyclingweekly.co.uk/news/latest/539794/bradley-wiggins-new-gold-time-trial-dream-machine.html#qOY4MOgdscGTCZuD.99