Mr Haematocrit
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- Location
- Out of the saddle
Q-Rotor claim the elliptical chain rings reduce the effects of the dead spot on the crank, at the point this happens your in effect pushing a smaller chain ring. When your pushing through the dead spot you are using the equivalent of a 51 teeth while at its largest point you are pushing the equivalent of 56 teeth.
The logic seems sound and the cool little diagram show below seems to support this.
.
First Looks :- The chain ring looks well made and finished, the teeth of the chain ring features ramps to make shifting nicer, the shape appears a little strange at first, but you get used to it. It is identical in weight to my Shimano chain ring.
Fitting :- The fitting is the same as any other chain ring, other than you have to be fully aware of where the ellipse is respective to your pedal stroke. The ring features small dots on the mounting points which permit you to fine tune how agressive the change is respective to pedal stroke. There is also a learning or transition setting which you are advised to do first of all (basically read the fitting instructions)
Here is a picture of the chain ring on my venge
Living with the chain ring :- I do not experience a different sensation when riding the bike. I do not get the feeling I am pushing a smaller gear at any point. It took me a while to tweak the set up but now im on the sweet spot its great. My Di2 does not experience any issue shifting with this setup either.
My usual route used for testing resulted in being faster. To test I rode the ten mile route seven times on different days, replaced the chain ring with the standard job and repeated.
Although not scientific a faster average time came from the elliptical ring. It could be placebo (who knows) but I feel like I can spin a higher gear when using it. Hill climbing is the only time I believe I can feel the difference, my legs simply do not burn so much.
Downsides :- They are a conversation piece, as with electronic shifting everyone you meet has an opinion about ellipical chain rings, the most vocal are those who have never lived with either. Like electronic shifting, elliptical chain rings do not change the world.. they just make it nicer.
The logic seems sound and the cool little diagram show below seems to support this.
.
First Looks :- The chain ring looks well made and finished, the teeth of the chain ring features ramps to make shifting nicer, the shape appears a little strange at first, but you get used to it. It is identical in weight to my Shimano chain ring.
Fitting :- The fitting is the same as any other chain ring, other than you have to be fully aware of where the ellipse is respective to your pedal stroke. The ring features small dots on the mounting points which permit you to fine tune how agressive the change is respective to pedal stroke. There is also a learning or transition setting which you are advised to do first of all (basically read the fitting instructions)
Here is a picture of the chain ring on my venge
Living with the chain ring :- I do not experience a different sensation when riding the bike. I do not get the feeling I am pushing a smaller gear at any point. It took me a while to tweak the set up but now im on the sweet spot its great. My Di2 does not experience any issue shifting with this setup either.
My usual route used for testing resulted in being faster. To test I rode the ten mile route seven times on different days, replaced the chain ring with the standard job and repeated.
Although not scientific a faster average time came from the elliptical ring. It could be placebo (who knows) but I feel like I can spin a higher gear when using it. Hill climbing is the only time I believe I can feel the difference, my legs simply do not burn so much.
Downsides :- They are a conversation piece, as with electronic shifting everyone you meet has an opinion about ellipical chain rings, the most vocal are those who have never lived with either. Like electronic shifting, elliptical chain rings do not change the world.. they just make it nicer.
