Quote:
Originally Posted by JockoT
There is also the efficiency of the drive train to take into account, the amount of regenerative braking, the efficiency of the battery cooling and possibly other factors that effect the range.
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The rav4 ev has the tesla power train from the same year which is the 40kwh model, so unless there were any drastic changes the power train should be the same. Main difference would be FWD Vs RWD.
Quote:
Originally Posted by BLSTIC
And weight. You get some energy back from regen, but not all of it, so more energy to accelerate is still more energy used.
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Quote:
Originally Posted by Old Tele man
It's about the aero at speeds above about 45 mph, but it's always about weight acceleration (mass) at ALL speeds.
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In other words timing the red light in N is the best thing to do
which is what I try to do! Also, the RAV4 EV is lighter than the Model S by a few hundred pounds listed above. The Model S is a software limited 60kw pack. Rav4 ev is 41kwh so less weight.
Quote:
Originally Posted by redpoint5
The Leaf, for instance, uses induction motors instead of permanent magnet. This is a less efficient motor design and affects the MPGe.
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From a previous Tesla blog the induction motors are better for high performance. Maybe this is why the 0 to 60 difference between the Bolt and the RAV4 EV is only 0.5 even though the RAV4 EV is bigger/heavier/Less power from battery pack.
Quote:
Originally Posted by BLSTIC
Multiply Cd by A to get CdA (total area drag)
Tesla = 0.24*25.2 = 6.048
Rav4 = 0.3*30.4 = 9.12
9.12/6.05= 151% drag. The Rav4 has 50% more aero drag than the Tesla
44/36 (kw/h per 100mile) = 122% energy usage. Rav4 has 22% more energy usage.
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It's so hard to believe that the Aero is costing so much when the only two cons of the RAV4 EV is the height(Frontal Drag Increase) and the 0.06 drag difference from the body shape. The Height being what is affecting the front drag so much, right? From the other stats the RAV4 EV is narrower and shorter and weighs less. It takes so big of a penalty just from the front drag which I think is a bit unfair :P.
So would lowering the RAV4 EV closer to the ground lower the Frontal drag? Would this help by hiding the wheels into the body? It does have a belly pan on the bottom (Engineers added it for the ev). Also, the Frontal drag estimate was from the gasser rav4... I feel it could be potentially smaller for the rav4 ev. One of the things they did ont op of picking aero headlights and reshaping the nose was add small mirrors from the korea market rav4. So... frontal drag must be smaller, no?