3 ms·
totally forgot about that part. Rolling resistance seems to be at least an order of magnitude lower than friction so that does bring the numbers into a reasonab
by skulk 5y ago
totally forgot about that part. Rolling resistance seems to be at least an order of magnitude lower than friction so that does bring the numbers into a reasonable range.
- credit_guy 5y agowikipedia indeed says the rolling resistance for rail cars is indeed 0.002, so you are off by a factor of a round 100. 3.24 kg/mile is not that bad. Actually even 10kg/mile sounds very acceptable to me, so they may end up being able to use cheaper batteries like NiMH.
- sudosysgen 5y agoRolling resistance, for trains, is just a small part of the equation. Air resistance and changes in altitude are also quite significant.