Page 79 - Trimax_mag166_UK

MATERIAL OF SIMON BILLEAU

cassettes. It means also to have few chains as their it and if the range is expanding with the 52 and 54
lenghts would vary with the number of teeth of the teeth, I believe Absolute Black, after leading the
chainring or the gear ratio. For a mechanic, it’s an MTB ovalized chainring market, would take the
easy work to change a cassette, and/or chainring leadership for the road, TT and triathlon uses.
and a chain. For others, it could be challenging.
More informations on :
At Challenge Wanaka for example, I’d have had https://absoluteblack.cc/aero-sram-direct-mount-
enjoyed a 54 teeth on the flat sections and a 48 oval-criterium-chainring/
teeth on the hilly parts...
The second chainring is from the famous Sram
This other limitation I can see with oval chainrings brand.
is the fact they limit the choice of power meter.
No need to introduce the best brand of components
Most of the powermeters on the bike market are in the world from Chicago in the US.
based on an analysis of the torque on differents
points and at an averaged angular velocity. But After creating the brand in 1987 with the desire to
the velocity on a revolution isn’t regular with an offer the best shifting system at the time -the Grip
oval chainring. There is a deceleration when the Shift-, Sram expanded its activity by acquiring
diameter is at its climax and an acceleration when RockShok, Truvativ, Avid, Zipp and Quarq. Since
the diameter is at its smallest. they are doing the best groupset in the world, they
keep innovating to make sure they remain the
The calculated power is consequently inaccurate. leader.
One of the only powermeter who would manage
to assess the power output with oval chainring is When Sram gets involved in the single chainring,
the Pioneer as it measures the angular speed in 12 they don’t only offer a chainring, they built a full
differents points and the torque. groupset 1X which works in synergy.

But this one isn’t compatible with the Absolute
Black as it’s only available with Shimano Dura Ace
or Ultegra.

It is still possible to use a
powermeter but you have to
keep in mind the power output
is an estimation, which is by the
way also the case with a circular
chainring...

The last limitation of this chainring
is that it’s only compatible with
the Sram crankset Force 22, Force
1, CX1, Rival 1, Rival 22, R1 and
S900(GXP or BB30).

At 145€, it is a great value for
money product. I really enjoyed

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