3 ms·
That seems to be a rather simplified view, as if stemming from the world of frictionless pulleys and rope that does not stretch. These are self-propelled elect
by ssl-3 2y ago
That seems to be a rather simplified view, as if stemming from the world of frictionless pulleys and rope that does not stretch.
These are self-propelled electric vehicles that have regenerative braking. Regen is miles ahead of just dumping momentum as heat [as conventional brakes must] but it can never be 100% efficient -- and it may not even be able to begin to try to capture 100% of that momentum in the first place, depending on the particular braking circumstance.
These characteristics weigh heavily on how such vehicles perform in the real world, especially when the terrain is not flat. (And in this test, the terrain was not flat.)
- Tostino 2y agoIt is a pretty simplified view. I wrote an electric vehicle power / efficiency / range estimation program back in college when I was very into building electric bikes. (More advanced version of the ebikes.ca calculator for an example). There were a whole lot of parameters that went into actually estimating the performance, but the general rule of thumb was rolling resistance is pretty much worth ignoring (for efficiency) until you have spent time optimizing aero and drivetrain losses. It was pretty damn close to real world measurements. I'm going to use rules of thumb rather than exactly calculating things for a colloquial conversation online.