by "Manwich - now Keto-Friendly" (manwich)
Published 03/23/2017 at 16:25
by "Manwich - now Keto-Friendly" (manwich)
Published 03/23/2017 at 16:25
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STARS: 3
Today over lunch, I was wondering... is the RWD Tesla Model S a rear-motor or mid-motor?
Well I found this picture:
Clearly the motors are positioned to make them qualify as rear-motor.
So in case any of you were wondering... now you know.
And then I wondered how the Model S chassis compared to the Telsa Roadster chassis. The Roadster:
And the Model S chassis:
"chaozbandit" (chaozbandit)
03/23/2017 at 16:59, STARS: 2
Rear motor! The S has the luxury of a larger chassis, whereas the roadster is pretty limited for space. Or any chassis that isnt designed to accept motors in the first place, really.
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"Urambo Tauro" (urambotauro)
03/23/2017 at 17:38, STARS: 2
That’s interesting. I wonder if we’re going to have to change the way we look at automobile layouts. Defining an EV as mid-motor or rear-motor is obviously an allusion to traditional layouts like FF, FR, RR, etc. These definitions serve to point out where the drive wheels are, and where the weight of the engine is.
Of course, it will always matter which wheels are the driven ones. But the placement and orientation of the drivetrain components is only relevant in terms of packaging and weight. EV motors like the ones Teslas use weigh less than 100 pounds each. That’s substantial, but it’s nothing compared to the weight of the battery pack.
So in the spirit of old definitions, I guess you could say that practically speaking, the RWD Model S is “MR”. But literally speaking, that’s not true at all.
"SOCdriver" (socdriver)
03/23/2017 at 18:35, STARS: 0
I only consider drive wheels when talking about electric cars because it is the battery that carries the weight penalty to it. I do like that more cars can be RWD when they are electric because the motor is so small you can cram it into a small space and not hurt you cargo volume. I prefer to see a hub motor at each wheel though as that balances weight some and allows car control calibration beyond what any gas motor could do.