Copyright Velocomp LLP 2005-2013
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FREQUENTLY ASKED QUESTIONS
How does PowerStroke work?
PowerStroke adds new technology both to the iBike Newton, and iBike Isaac
software.
In PowerStroke mode the Newton records its data 16 times per second (vs.
usual once per second).
iBike Isaac software analyzes the high-speed data, determining the front-to-
back and side-to-side wobbling motion of the bike
each 10 degrees of a
pedal stroke.
Wobble measurements and associated Wasted Watts/Motion/Time stats are
shown in Isaac’s PowerStroke Window.
Can other power meters do what the Newton PowerStroke does?
Nope, and for two reasons!
Strain gauge sensors do not—
and cannot
—measure wobbling motions, and
the wasted watts/motion/time caused by them.
Furthermore, most power meters broadcast their data once per crank
revolution—about 1.33 times per second, and most ANT+ bike computers
record power data only once per second. The PowerStroke records data 16
times per second,
more than 10 times more often than conventional power
meters broadcast it, and 16 times more often than other cycling computers
record it.
How precise are PowerStroke measurements?
PowerStroke accelerometer measurements are accurate /- 1%.
Does PowerStroke work any Newton?
Yes!
If you already own a Newton, update your Newton firmware to version 3.0,
and your Isaac software to version 2.0 (both updates are free and available
through your current release of Isaac software). Then, purchase the
PowerStroke upgrade key, available at the iBike Store. Your upgraded
Newton PowerStroke will be ready to ride: no additional calibrations or other
changes are required.
