9. FREQUENTLY ASKED QUESTIONS
9.1. GENERAL
ROTOR Power vs INpower?
ROTOR Power measures both legs separately using
gauges placed in each crank. ROTOR INpower
measures in the spindle power generated by the
left leg. The power value that's shown is the result
of extrapolation (default operation to multiply by
two power measured in the left leg). In addition
to the new metrics for pedal analysis introduced
by ROTOR Power: Torque Effectiveness and Pedal
Smoothness, ROTOR INpower offers additional
information, such as the TORQUE 360 graph and
the OCA (Optimum Chainring Angle) value.
What ANT+™ devices is ROTOR INpower
compatible with?
They are listed in the ANT+ directory:
http://www.thisisant.com/directory/
How do I decide which INpower to buy if I already
have a ROTOR crankset?
One of the many advantages of the INpower
power meter is its compatibility with every ROTOR
crankset with 30 mm axles (FLOW, 3D+ and 3D30
road cranks; REX1 and REX2 MTB cranks; it is also
compatible with the specific 3D+ and 3D30 models
for cyclocross).
If you are already using a ROTOR crankset, you
have the opportunity to purchase the non-drive-
side INpower assembly for your current model (if it
is not prior to 2013). To complete the installation,
you may use the drive-side crank assembly that you
already have.
Make sure the length of the new INpower crank
and your current crank are the same in order to
guarantee full compatibility.
Frequently asked questions
56
WARNING: you must use the self-extractor set
of washer, bolt and nut included with your left
INpower assembly. If another bolt is used it
will damage the electronics located inside the
spindle. If this happens, the warranty is no longer
valid. Follow the instructions on the user manual
to correctly install the INpower drive-side crank
assembly.
What am I going to find in the INpower product
box?
There are two possibilities when buying INpower.
When buying the complete set of left and right
crank assemblies, you will find an installation and
a User Software manual (User Software can be
downloaded for free from ROTOR's website), and a
Training Peaks postcard. Training Peaks has offered
INpower customers a free premium account
subscription. Visit trainingpeaks.com/ROTOR to
obtain the maximum benefit from this new alliance.
If you only buy the left crank assembly, together
with it you will find the same manuals mentioned
previously, and a set of washer, bolt and self-
extractor nut. These must be used to install the
right crank assembly of your existing cranks with
your new left INpower crank assembly. Never use
another bolt or self-extractor nut to install INpower
cranks.
Why is there bolt, nut and washer together with
my INpower left-crank assembly if I bought it
separately?
The bolt and self-extractor nut from the non-power
meter cranks are not compatible with the INpower
axle.