Congrats on your new SL! Eager to hear your impression once you have some miles on it on home turf.
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@JoeDirt recently got a new bike with a suggested happy dance diagram inside the carton (his photo cropped above). Look it up if you don't have one in mind already.
Your "really well sorted" pretty much sums it up. Now that I have almost 7 weeks and 370 miles on my Vado SL 5.0, my favorite part is the way the whole package comes together — WAY more than the sum of its parts. That's why the specs do the riding experience so little justice.
The Vado SL 5.0 sensor array includes both torque and true cadence sensors — the latter actually measuring crank RPM, not just the presence or absence of crank motion. From their outputs, the bike estimates real-time rider power (Pr) at the crank.
Not the most accurate Pr reporting, some say, and there's definitely a brief lag. But good enough for most purposes — including a central role for Pr in motor power (assist) control. I think of this as a "power-sensing" assist scheme.
Without going into detail, motor power ramps up linearly with Pr to a predetermined cap not to exceed the motor's max mechanical ouput of 240W. Each assist level (ECO, SPORT, etc.) specifies its own ramp slope and cap, and you can tune these parameters to your liking in the app. Consult the official online documentation and forum search function for the nuts and bolts.
Still using the original assist level parameters for now. Once I have a good feel for this baseline, the tuning experiments will begin.
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Never had rider power data before, so I set TCU page 2 of 2 to show assist level, Pr, and cadence together. Quite interesting to watch these parameters vary interdependently with ground speed (TCU page 1) as rides unfold.