ROTOR Q-rings change gear?
Moderator: robbosmans
I use Q-rings with Dura Ace 7900 the last 2 months and I noticed that when I have the last gear, for example 23 in 11-23 cassette or 25 in 11-25 with big(53) and small(39) crankset and I push(pedal hard) it tends to change gear from 23 to 21 or 25 to 23.
It doesn't change but I can hear that the chain tries to go down.
I have searched everything and the only expanation that I have took it's because of the oval shape of the Q-rings.
I just want to know if it's actually from the Q-rings and if I can do anything to stop it.
It doesn't change but I can hear that the chain tries to go down.
I have searched everything and the only expanation that I have took it's because of the oval shape of the Q-rings.
I just want to know if it's actually from the Q-rings and if I can do anything to stop it.
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That sounds like you have an issue with the rear derailleur. The shape of the Q-rings has very little effect on the shifting of the rear derailleur, but does have a little more lag when shifting the front derailleur compared to a round ring (for me, it's worth the trade of).
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- Joined: Sat Jan 07, 2012 5:43 am
I've got the 50/34 Q rings and say that you should be looking at the rear der adjustment.
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- Joined: Thu Jul 12, 2012 11:12 pm
Rear derailleur. It did affect my front shifting. And like above. Not enough to take them off.
Assuming that the cassette is correctly assembled, the chain is correctly installed and both are in decent condition, the symptoms you are describing appear to be a rear derailleur/hanger problem, not a chainring problem.
Most derailleurs have more than enough capacity to deal with the minor changes in chain tension created by 'Q'-rings in normal operation. I do not think you need a new derailleur, it could just need to be adjusted better, though it sounds more like a hanger issue to me.
Most derailleurs have more than enough capacity to deal with the minor changes in chain tension created by 'Q'-rings in normal operation. I do not think you need a new derailleur, it could just need to be adjusted better, though it sounds more like a hanger issue to me.
Chain length is adujusted the same as round rings. The hanger is the little piece of metal that attaches to the frame so you can attach the derailleur. Sits in between the RD and the frame.
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