My opinion is that it's about range. I care less about the 2.9 seconds, but having the extra range is really great. The 2.9 sec is just a side-effect (for me).
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Xenoilphobe
Well-Known Member
I can't wait to be Poser!
I think I am asking a slightly different question. I am assuming the new dual motor drive unit in the rear of the CT (tri-motor version for example) will have 2 motors of the same type. There is one reduction gear in single motor drive units but it might be possible to have 2 different reduction gears in a two motor drive unit with each motor optimized slightly differently - almost like a 2 speed transmission but without the many transmission issues.
This would have a similar effect to the different motor characteristics available on the dual motor (front and rear) vehicles today.
I think with some clever SW this should be possible and it would be helpful to optimize the torque curve for hauling and probably help with regen as well.
The dual rear drive unit will have identical gearing on both sides. If not, then there will be a mismatch between the torque and speed limits resulting in one motor being reduced to match the other (both producing the same wheel power, but at different motor RPMs). Otherwise, it will experience differential torque vectoring. I don't see the achievable shift in efficiency being worth the complexity to pull that off.
Like the S/X, the semi has different ratios (23 and 13:1) for the two rear axels to spread the motor curves across RPM. However, it is dealing with higher loads and lower top speed.
Yep, tires are important. My challenge is deep snow on a steep lane. I have to get to the top of the hill to get the tractor out to push the snow off the hill. 16" clearance is going to be helpful.
If stuff happens and I get bound up then I just walk up worst case. I am willing to give simple RWD a go on the CT.
You may be right. Are you envisioning a differential involved? I was thinking the 2 motor rear drive unit would be independent and avoid a differential somehow. If they could figure it out in SW and avoid a differential they would have a great version of Tesla-traction and minimize mechanical complexity. If one motor fails (snapped shaft) or overheats then the other could shoulder the complete load temporarily or completely until serviced.
I am trying to think out the various advantages of the double motor drive unit. It is interesting and I am hoping it is more than just power.
This is what I thought happened. No differential, just software controlling the traction of each rear wheel.
No differential, just direct drive and software based traction/ torque management.
A setup like the Prius (I think) would allowef blending two different motors together via gearing, but not needed here.
Simplifying that the induction and PMSR motors cost the same, Tesla likely can't make 30% margins on the single motor...
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It was just for discussion's sake. They aren't getting 30% on current vehicles, but the principle is valid at 20% also. 8k, 10k, 14k.
Darkfox021
Member
Isn't the single motor $40k?
Also, the battery for the dual motor should cost more than the battery for the single as it has more range.
Also, the battery for the dual motor should cost more than the battery for the single as it has more range.
Thought the numbers looked off. RWD pack is likely smaller, and the body seems high.
Darkfox021
Member
Checking the math, I get the following (assuming 30% margin and the dual motor battery costs @ 20% higher than single):
Single: COGS: $31,500, MSRP: $45000
Dual: COGS: $37,100, MSRP: $53,000
Triple: COGS: $49,000, MSRP: $70,000
Single: COGS: $31,500, MSRP: $45000
Dual: COGS: $37,100, MSRP: $53,000
Triple: COGS: $49,000, MSRP: $70,000
doghousePVD
My grandfather’s car
Just saw this crazy pickup which is sorta "competition" for the Cybrtrck. There is a huge disconnect though for the folks who want a CT vs. those who would be interested in this monstrosity.
This Isn't How I Wanted Street Trucks To Come Back
770 hp
4wd
hard tonneau
$93k+
Performance: Shelby’s claiming a 0 to 100 to 0 mph time of 8.3 seconds).
Horrible/weird low suspension
This Isn't How I Wanted Street Trucks To Come Back
770 hp
4wd
hard tonneau
$93k+
Performance: Shelby’s claiming a 0 to 100 to 0 mph time of 8.3 seconds).
Horrible/weird low suspension
JRP3
Hyperactive Member
Excellent response to Doug DeMuro nonsense Cyber bashing
Motors don't cost anywhere near $3500 each before margin. It has been estimated that the motor, inverter and gearing are about $1200 for Tesla.
JulieN08724
Member
I was wondering when everyone would start wondering why we need a tri-motor setup. My first thought was that it adds safety when towing, especially large trailers. Remember, during the Semi reveal Tesla stated that jack-knifing the trailer could be eliminated by using torque steering. Tri-motor should give you that. Should help in icy conditions. And the extra torque and horsepower is nice (addictive actually).
I ordered the Tri-motor.
doghousePVD
My grandfather’s car
I ordered a tri motor strictly because of range. Don’t need anywhere near that much acceleration.
PACEMD
Active Member
I reserved the Tri-Motor.........for range, and power for towing and off-road actual real work........the 0-60 time is just a side effect.........know your purpose and your vehicle.......
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