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Hello,
I am a Cat 3 racer, and I am looking to improve my results. The iBike definitely looks like promising product, but I have a few questions:
1. Can it be used on mountain bike for winter training?
THE IBIKE WORKS ON MOUNTAIN BIKES BUT DOES NOT HAVE THE SAME +/- 2% ACCURACY, DUE TO THE FLEXIBLE SUSPENSIONS CHARACTERISTIC OF MOUNTAIN BIKES.
2. Is the case weather proof?
YES
Will it survive riding in rain?
YES
Will it survive occasional crashes (if mounted over stem, which is relatively safe position)?
YES, BUT IF IT IS DAMAGED IN A CRASH THIS IS NOT COVERED BY WARRANTY.
3. What is the principle of its operation? How the power is measured?
HOW DOES THE iBIKE® POWER METER WORK?
The iBike power meter uses a revolutionary approach to power measurement that is based
on Newton’s third law:
“For every action there is an equal and opposite reaction”
In bicycling terms, this means that the factors causing the cyclist to expend power during a
bike ride (hill climbing; wind, tire, bearing and other losses; bike acceleration) are equaled
by the power applied through the pedals by the rider.
With the exception of the iBike, all high performance power meters determine power by
measuring the forces applied by the rider to the pedal. Measuring pedal-force is an
accurate way to derive power provided the cyclist is willing to accept the weight, cost,
installation, inflexibility, and operational penalties that are characteristic of pedal-force
power meters.
In radical contrast, the iBike uses state-of-the-art sensors, along with new and patented
technology, to measure all of the major factors that cause the cyclist to expend power:
wind, hill climbs, bike acceleration, and rolling friction of the bike and tires.
A powerful microprocessor, programmed with proprietary DSP filters and real-time
solutions to the dynamic power equation, processes the output from the iBike sensors
many times per second, computing the total power demands created by hill slope, wind,
etc. And thanks to Newton’s third law, measuring the power consumed by hill climbing,
overcoming wind resistance, etc. provides a comprehensive and accurate measurement of
the power generated by the cyclist.
The iBike uses four sensors:
o an accelerometer to measure hill slope and bike acceleration/deceleration
forces,
o a differential pressure sensor to measure wind speed forces,
o an absolute pressure sensor to measure elevation gain, and
o a wheel pickup to measure bike speed.
All sensors except the wheel pickup are located within the iBike housing,
making it possible to use the iBike, quickly and easily, on all of your bicycles.
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