I wrote a post about #ebike, #router, #brouter, #EV and #hybrid #HPEV cars, where I ask:
* what are good parameters for ebike routing?
* can we improve elevation data for the road network?
* do you know of restaurants, bars, bakeries, etc. that allow for recharging ebike batteries, even for a fee?
#OpenStreetMap could probably include that info.
https://www.grulic.org.ar/~mdione/glob/posts/yuba-kombi-%2B-virvolt-900-a-trip-review/
I'm open to ideas!
I just watched again the talk I mention, and they were concerned about #EVs (cars). Still, they make the assumption that most energy is only wasted in friction against the wind. I think they make the mistake of assuming that EVs, when going down, regenerate 100% of the energy they used when going up. The calculation is way more complex than that, and from what I read in any case the number seems to be closer to 10%.
Finally, if you make a trip that only goes up, you never recover that energy.
Ebike range depends on each rider and each bike, among other things. I have a spreadsheet that I built up from a dozen or so trips, recording distance and elevation gains for each, along with battery usage. I add further trips sporadically. From that data, I worked out a formula that more or less fits my bike and my level of fitness that says, for a projected ride, such and such a milage and height gain should use about so much battery.
Don't know if it's helpful, but for me 10m of elevation gain uses approximately the same power as 1 km on the flat.
Marcos Dione
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