anionic1
Well-known member
- First Name
- Michael
- Joined
- Apr 30, 2021
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- Location
- California
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- Cybertruck
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- Estimator
So to quote Fat Bastard from Austin Powers, I am inefficient because I am fat and I am fat because I am inefficient. Its a vicious cycle.You seem to be confusing the relevant variables and forces - or in any event, just wrong on this response
the “efficiency” of the Hummer itself (irrespective of battery size) has very little to do with some mechanical efficiency of the motors converting electricity into power - all modern BEV are inordinately efficient in this metric. It’s their superpower. Relative to ICE engines, BEVs have relatively little energy on board but convert every bit of it power eg >95%), while ICE engines have huge amounts of energy on board and convert very little to power eg (<35%).
Put a Hummer in a vacuum (no drag) and on rails (no rolling resistance) and it could go a “million” miles.
It’s the poor drag and poor rolling resistance qualities of the Hummer that are the predominant forces resulting in its large battery not taking it very far. It’s got massive frontal plane and unforgiving angles, all riding on a massive tire/wheel set - which in turn requires a larger, heavier, battery, that further increases its rolling resistance
Hummer battery may as well be pushing a rope through peanut butter.
All of which is already reflected in EPA max range estimates. And doesn’t change when a trailer is attached.
what changes drastically when a trailer is attached is the drag and rolling resistance. And since drag increases exponentially with speed…
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