Page 77 - Trimax_mag166_UK

MATERIAL OF SIMON BILLEAU

your bike. It is allowing you to save the weight of
the shifting lever, the inner chainring, the front
deraillor, the deraillor hanger, the cable and the
spider. It’s roughly a 400g on the scale. It’s known
that lightening a top range bike by 1g costs 1,5€ so
this 1X system allows you to save 600€.

There is also less maintenance which is great to
save money too. There is no more need to clean the
front deraillor or the small chainring, to change
the cable or to adjust the front deraillor.

I’m sure some readers are wondering what is
the technology allowing the chain to stay on the
drivetrain without falling off .

The chainring feature an unique narrow-wide
teeth profile for chainguide free build. The chain
is working normally with the narrow teeth and is
maintained in place with the wide teeth until the
links of the chain leave the chainring toward the
cassette gear.

It’s important to note that this chainring is
available only in 50 teeth at the moment and
should be sold during this year in 52 and 54
teeth.

Absolute Black don’t hesitate to communicate
about the characteristics of its chainring.
For example, it’s written that the ovality
is 10,45% at the timing of 108,3° after the
top dead center, which gives for a 50 teeth
chainring a difference of 20mm between the
biggest and smallest diameter.

On the picture below, the Absolute Black
chainring is sitting on the Sram 1X of
54 teeth. We can see that the maximum misunderstand and believe that an ovalized 50
diameter is close to a 53 teeth at 108,3° (for a short teeth chainring is the same than a 53 teeth), and
timelapse around 108,3° after TDC ! Please don’t close to a 49 teeth for the smaller diameter.

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