Quote:
Originally Posted by aerohead
1) If the Model 3 were already 'optimized' for mass, arbitrarily lightening it would have the potential to lower its overall efficiency in an urban setting, the exact context of the Master's Thesis on page -26. There is no contradiction.
2) The Thesis is discussing overall efficiency. All other mass-related potentialities are encompassed within their use of 'efficiency.' It could not be more clearly spelled out. Net efficiency.
3) It's impossible to contradict an ' assertion' when no one is in possession of the facts which would prove the correctness about how a Tesla Model 3 'might' perform at lower mass. It's pure speculation.
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Of course, and this has already been brought out, more efficiency doesn't mean better total efficiency or better miles per kWh, etc. A lighter Model 3 will get better miles per kWh even if regen efficiency drops.
A Model 3 also ususally hauls only one person and not much more, and has a limit of 5 (or is it 4?) passengers and some 900lbs total weight of cargo and passengers (although I'm sure you could add more than that). But if you could lighten it and replace that mass with even more passengers and/or cargo, then miles per kWh per passenger or lb of cargo would also increase considerably.
This whole thing reminds me of the BSFC efficiency of an ICE being at around 80% load. But if you drive around constantly at 80% load you'd actually get worse fuel mileage.