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Rotor Q-Rings Chainring
Product DescriptionRotor Q-Rings do not eliminate the dead-spot, but help to reduce its negative effects, moving the legs easier through the dead-spot imitating a smaller circular chainring, and enabling the legs to remain in the power stroke for a longer period of time when compared to round chainrings. Q-Rings change the equivalent tooth size by decreasing it before the dead-spots and increasing it when the rider is in the power mode (when more power is available at the pedal down stroke). A 44T MTB Q-Ring, around the upper dead-spot is equivalent to a 42T, but as the pedal goes down and more strength is applied (just passed the maximum power moment), the equivalent chainring tooth size reaches 46T.Rotor 3D+ Mtb Cranks and Q-Rings Pro Review
Rotor is a company from Spain that manufacturers very high end components. They’ve been making waves with with their 3D+ crank system and Q-Rings and they sent us a set of of their 2×10 crank to try out. At any price, it is worth trying out. Consider the Q-rings first to see the benefit and if it makes sense for you. Of course the risk always is you’ll like it so much that you’ll feel compelled to upgrade all your bikes in the stable. Continue reading →
User Reviews
Submitted by
Brian Cavern Date Reviewed: February 3, 2013 Strengths: They apply the power smoother than any round ring ever. The first ride was an amazing difference. No shifting problems, equal to Dura-Ace. Excellent quality. Weaknesses: Cost. Wow, over $200 bucks for two chainrings! Bottom Line:  
Submitted by
speedraceratl
a Racer Date Reviewed: May 18, 2012 Strengths: Easy to install on XX cranks Increase in acceleration on 29er Makes climbing easier Weaknesses: Price Has not happened yet but i worry about dropping the chain. Bottom Line: Expand full review >>Price Paid:
$245.00 Purchased At: ebay Similar Products Used: none Bike Setup: 2011 Anthem X 29er Full XX drive train Stans Crest wheelset Avid Elixir CR Mag brakes w/ashima rotors weight sub 24lbs
Submitted by
sehsuan
a Cross Country Rider Date Reviewed: April 24, 2012 Strengths: works as intended reduces knee pain/discomfort shifting is just as fine as shimano/FSA free speed on the rides! Weaknesses: confusing terminology in manual - "regulation points" Bottom Line: Expand full review >>Similar Products Used: FSA 7075 round rings - 44/32/22.
Shimano XT 760 round rings - 44/32/22 Bike Setup: voodoo bizango, xtr 975 hubset
Submitted by
Daniel
a Racer Date Reviewed: April 23, 2012 Strengths: helps smooth out dead sections on technical terrain and improve leg speed Weaknesses: None that I can note Bottom Line: Expand full review >>Bike Setup: 1x chainring
Submitted by
cyclingmagnet
a Cross Country Rider
from Littleton,CO Date Reviewed: March 12, 2012 Strengths: These rings help me climb better. No doubt. Also helps eliminate my knee pain I experience when I get on round rings. If that's all they did it would be a win. Bottom Line: Expand full review >>Duration Product Used: More than 3 years Similar Products Used: XTR round Bike Setup: Epic
Submitted by
Hobbes
a Weekend Warrior
from Calgary, AB Date Reviewed: June 6, 2011 Strengths: These rings are awesome. I was reluctant on spending that much money on chain rings, but they are great. Zero issues getting used to them. I bought a second set for my road bike too. They will definitely make you a better rider. Weaknesses: Pricey, not as nice looking as the OEM rings, but totally worth it. Bottom Line: Expand full review >>Favorite Trail: Kananaskis Duration Product Used: 1 Year Price Paid: $250.00 Purchased At: ebay Similar Products Used: Shimano Biopace, normal round rings.
Submitted by
andy H
a Weekend Warrior
from Johannesburg, South Africa Date Reviewed: October 1, 2010 Strengths: options available are designed specifically to replace major brands with minimum fuss Weaknesses: can't think of any Bottom Line: Expand full review >>Duration Product Used: More than 3 years Similar Products Used: Shimano BIOPACE - many moons ago ! Bike Setup: SCOTT AFD PRO - Shimano Ultegra, etc..
Submitted by
ozzybmx
a Cross Country Rider
from Australia Date Reviewed: September 9, 2010 Strengths: Awesome difference , riding bigger gears , less fatigued after a ride , back pain after an epic ride is GONE .... just try them . Weaknesses: Probably price, BUT worth it so much ive changed/changing all bikes. Bottom Line: Expand full review >>Duration Product Used: 3 months Price Paid: $100.00 Purchased At: up front bikes Similar Products Used: loads rings ... to sum the up , all "round" Bike Setup: 29er FS and HT
Submitted by
SBK33
a Cross Country Rider
from Spain Date Reviewed: December 15, 2009 Strengths: Q-Rings are the best upgrade I have made to my bike, no questions asked. They let me power through tough sections, mantain momentum like never before and let me ride longer for harder. I really notice that the Q-Rings help me get through technical sections I could never quite clear before. Amazingly, grip is improved in slippery conditions cause you have more torque at your weakest point and less at your maximum point, meaning less variation in power going to the tire during the pedal stroke. This same effect allows you to power through Sand more easily. When I spoke to Lene Byberg before a World Cup race when deciding to buy them she told me I would feel this. I also notice that on the really long climbs where you face a sudden ramp, I dont suffer as much as I used to and I dont feel my heart pounding as much. These things wont make a Fred into a Lance, but they certainly make you Fred 2.0... Weaknesses: They only make the classic 44-33-23 sizes for MTB, I wouldnt mind having a 42 option for the outer ring. Other than that, no weaknesses, just benefits. Bottom Line: Expand full review >>Duration Product Used: 6 months Similar Products Used: Round rings... but they are not at all similar: They suck. The triple set installed relativley easilty but you do need to follow the instructions. I did need to raise the FD a little but I didnt have the same problems Yeti below did. I did upgrade the FD while installing the Q rings so maybe the derailleur is the issue for some people? The Specialized team all ride these rings on all sorts of Specialized bikes so the guys at rotor must have made sure they work properly. Bike Setup: 2009 specialized epic.
Submitted by
SweatyYeti
a Cross Country Rider
from Grand Junction, CO Date Reviewed: April 18, 2009 Strengths: Discernibly easier to climb steep inclines at low cadences with the middle and inner chainrings. Weaknesses: Finicky setup Slight degradation of front shifting Outer (big) chainring is impossible to use on a triple chainring crank. Moving the front derailleur up to fit the big ring causes the chain to rub the front derailleur when using the big (rear) cog and inner and middle chainrings. Do not buy the big, outer chainring. I am just using the middle in inner Rotor chainrings, and a regular round outer ring. Spacing of the inner and middle chainrings is greater than the spacing of the middle and outer chainrings. This does not seem correct to me. The inner chainring is closer to the BB shell than it should be. This causes a slight rubbing of the chain against the front derailleur cage when using the big (rear) and small (front) combination. It’s not enough to prohibit use of the big-small combination, just a slight annoyance. I do not think the inner ring spacing is correctly machined. Bottom Line: Expand full review >>Favorite Trail: Lunch Loops Duration Product Used: Less than 1 month Price Paid: $180.00 Purchased At: King Barcelona Similar Products Used: many Bike Setup: '09 Spec Epic
Submitted by
knull9
a Cross Country Rider
from Memphis, TN Date Reviewed: November 26, 2008 Strengths: Better "feel", reduce knee stress, good quality. Weaknesses: Expensive! Performance claims questionable. Shifting slightly worse, can be a pain to adjust. Bottom Line: Expand full review >>Favorite Trail: Glentress, Scotland Duration Product Used: 2 Years Price Paid: $200.00 Purchased At: RotorUSA Similar Products Used: All kinds Bike Setup: Now on all my Road and MtB bikes and on my ss.
Submitted by
Vallie Atkinson
a Weekend Warrior
from Tucson, AZ Date Reviewed: June 2, 2008 Strengths: Easier to stay on top of a gear. Better power in sand, and rough uphills Weaknesses: Slightly pricey, but worth it. Bottom Line: Expand full review >>Favorite Trail: Brown Mountain Duration Product Used: Less than 1 month Price Paid: $130.00 Purchased At: Rotor Cranks Similar Products Used: Round rings, and old Biopace Bike Setup: Titus Motolite
Submitted by
Marcel
a Cross Country Rider
from Barcelona, Spain Date Reviewed: May 11, 2008 Strengths: Light weight. Excellent quality. Customized look. No apparent stress on knee, even if natural to bicycling. Incredibly smooth stroke. Overwhelming sense of efficiency. Weaknesses: Price? But you get more than what you pay for. To me it was a little tricky to set up the front derailleur at the beginning, but great afterwards. Bottom Line: Expand full review >>Favorite Trail: Costa Rica! Duration Product Used: 1 Year Price Paid: $210.00 Purchased At: Probike Barcelona Similar Products Used: Round rings... Bike Setup: Trek 8900 hardtail, full XT, SID Team, Thomson.
Submitted by
Richard
a Weekend Warrior
from Montgomery, AL. USA Date Reviewed: April 5, 2008 Strengths: Improved pedal stroke, additional power,less stress on the knees, high quality Weaknesses: None Bottom Line: Expand full review >>Duration Product Used: 1 Year Price Paid: $200.00 Purchased At: Excel Similar Products Used: None Bike Setup: 9 Speed Compact Shimano 
Submitted by
Gary
a Weekend Warrior
from South Africa Date Reviewed: August 21, 2007 Strengths: Good quality, good workmanship. Weaknesses: No apparent difference in performance. While the science seems to make sense there are no peer-reviewed studies which confirm the manufacturers claims. There are lots of claims and sponsored studies but no peer-reviewed unbiased, published studies. Bottom Line: Expand full review >>Duration Product Used: Less than 1 month
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