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cardinal guzman

Rotor Q rings.

Is anyone using them? How effective are they? I see Sastre was using them in the tour.
CapeRoadie

Re: Rotor Q rings.

cardinal guzman wrote:
Is anyone using them? How effective are they? I see Sastre was using them in the tour.


Some of my riding friends tried them, if you're talking about those elliptical chainrings.  They all seemed to stop using them.  If you want to remove the "dead spots" (which is what Q-rings allegedly do), it's better to actually learn how to pedal circles.  Unclip a foot once in a while and practice one-legged pedaling.  That will teach you where the dead spots are and help you remove them.  Try to feel the pressure of the pedal all the way 'round.  It works.

I also read, from a noted coach, Joe Friel, I believe, that elliptical chainrings may work if you train with them.  But only if you race with them as well.
cardinal guzman

Re: Rotor Q rings.

CapeRoadie wrote:
If you want to remove the "dead spots" (which is what Q-rings allegedly do), it's better to actually learn how to pedal circles.


I think they are designed for people who have already conditioned themselves to pedal circles, and that the idea behind them is to even out the power distribution through the full circle?
thunderthighs

another toy.. YOU PEOPLE LOVE YOUR TOYS !!!!!

BUT.. I TRYED A 175 MM CRANK ARM SATURDAY.. I LOVED IT..

I WON THE GROUP SPRINT.. yeah iam a wheel suck, but a great one !!!

ciao
cardinal guzman

thunderthighs wrote:
another toy.. YOU PEOPLE LOVE YOUR TOYS !!!!!

BUT.. I TRYED A 175 MM CRANK ARM SATURDAY.. I LOVED IT..

I WON THE GROUP SPRINT.. yeah iam a wheel suck, but a great one !!!

ciao


Lol - well done TT! I'm looking to get some smaller cranks for the hills round here - 160's or less.

I'd like to point out that I will never get some of these - I ride for exercise and am proud of my bling-less bicycles. Smile
last km

Are these the things Jens Voight uses, he seems to be doing ok with them ???
Seem to remember Shimano had something similar to "iron out the dead spot"
cardinal guzman

last km wrote:
Are these the things Jens Voight uses, he seems to be doing ok with them ???
Seem to remember Shimano had something similar to "iron out the dead spot"


I think they are one of those things that makes perfect sense 'in theory'.

My problem would be that the dead spot on my pedal stroke starts at 6 o'clock and goes around to 4 o'clock Embarassed

http://www.rotorcranksusa.com/science.shtml
CapeRoadie

thunderthighs wrote:
another toy.. YOU PEOPLE LOVE YOUR TOYS !!!!!

BUT.. I TRYED A 175 MM CRANK ARM SATURDAY.. I LOVED IT..

I WON THE GROUP SPRINT.. yeah iam a wheel suck, but a great one !!!

ciao


What position did you have 500 meters out?
berck

I don't think anything as been resolved as to whether they are truly better than traditional round chain rings. Here are a couple more sources that discuss them....

CyclingNews Article
Biopace opinion
Noncircular study

Although, you can't see the full study results on the last one, they did put the following comment in the link I provided...

In conclusion, although the design of the Harmonic chainring was based on optimization analysis, comparison of the physiological response in this study did not translate into an advantage of the Harmonic over circular chainring during submaximal and maximal pedaling in trained cyclists.

Which appears to contradict the studies being shown by Rotor
thunderthighs

CapeRoadie wrote:
thunderthighs wrote:
another toy.. YOU PEOPLE LOVE YOUR TOYS !!!!!

BUT.. I TRYED A 175 MM CRANK ARM SATURDAY.. I LOVED IT..

I WON THE GROUP SPRINT.. yeah iam a wheel suck, but a great one !!!

ciao


What position did you have 500 meters out?


i was about 6th man back.. sitting with a 54x15.. came out 54x12..

there was a 2 bike gap between me and second place...

ciao
paperman

Came out in 54/12 ..........Fair play. Some dancing to get up more cadence there!!! Nice.
thunderthighs

to the gang..why are you useing these babhy gears to do the work for you..remember increase power adn keep those big rings..53/54/55......

ciao
CapeRoadie

thunderthighs wrote:
to the gang..why are you useing these babhy gears to do the work for you..remember increase power adn keep those big rings..53/54/55......

ciao


I AGREE !!!!!
Bartali

Increase power ... and pedaling efficiency.  No point mashing a 53+ chainring if you can't do it properly ... a sure way to cripple your knees!
thunderthighs

Bartali wrote:
Increase power ... and pedaling efficiency.  No point mashing a 53+ chainring if you can't do it properly ... a sure way to cripple your knees!
...

not really.. try 53x17..  keep spiining smoothly..1 hour..

let me know...ciao
Bartali

Thx TT will do!
paperman

Its ok but I agree with Bartali never ever grind a big gear if you are unable for it its a sure fire way to ruin your knees
CapeRoadie

paperman wrote:
Its ok but I agree with Bartali never ever grind a big gear if you are unable for it its a sure fire way to ruin your knees


Oh yes, just imagine the grinding of bits of cartilage under your kneecaps as your quadriceps, under such high tension, contract hard and violently, and repeatedly, as you exhaust them over the course of a long ride...
Mrs John Murphy

bump
thunderthighs

nah..riding is unsprung.. set foot position..ciao
berck

Welcome back TT
MAILLOT JAUNE

bump - Don't repsond or view spammers posts

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