Single Motor - "Positive Traction?"

[BobRad65]

Any guesses if the single motor variant will have some form of positive traction, torque converter where in spite of a single motor, torque can be applied to more than one wheel? I've never seen comments about how this works in a single motor Tesla.

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[SCTesla]

Any guesses if the single motor variant will have some form of positive traction, torque converter where in spite of a single motor, torque can be applied to more than one wheel? I've never seen comments about how this works in a single motor Tesla.

There are no torque converters on EVs. There's a single electric motor that directly drives the rear wheels.

Not sure what you are asking overall. Judging by the M3/Y, they will use the permeant magnet motor for the back tires that's in the AWD.

 

[Deleted member 17810]

There are no torque converters on EVs. There's a single electric motor that directly drives the rear wheels.

Not sure what you are asking overall. Judging by the M3/Y, they will use the permeant magnet motor for the back tires that's in the AWD.

If I remember correctly, I think the front motor from the AWD is being used for the single motor variant.

 

[SCTesla]

If I remember correctly, I think the front motor from the AWD is being used for the single motor variant.

That's not how all of the other Teslas are.

 

[Deleted member 17810]

That's not how all of the other Teslas are.

Ok.

 

[REM]

I doubt we ever see a single motor variant, to be honest.

 

[BobRad65]

Understand there's not an oil filled old school torque converter but the principal behind it, perhaps software driven, some mechanism that distributes power away from the primary drive wheel. I assume the single motor doesn't spin each of the rear two wheels at the exact same rate with the same torque. The reason I ask is because trucks go places that are likely to get stuck. Wondering how effective the rear wheel drive is in getting you unstuck, and learning exactly how that is implemented in a single motor situation.

 

[SCTesla]

Understand there's not an oil filled old school torque converter but the principal behind it, perhaps software driven, some mechanism that distributes power away from the primary drive wheel. I assume the single motor doesn't spin each of the rear two wheels at the exact same rate with the same torque. The reason I ask is because trucks go places that are likely to get stuck. Wondering how effective the rear wheel drive is in getting you unstuck, and learning exactly how that is implemented in a single motor situation.

Tesla uses torque vectoring in some vehicles which can distribute different amounts of power to each of the two wheels.

 

[Deleted member 17810]

Found it



Permanent motor goes to the rear.

So just the AWD setup without a front motor then.

 

[Mini2nut]

I doubt we ever see a single motor variant, to be honest.

I predict we will see a RWD version sometime in the spring, around Q2.

CT demand has slowed and the more affordable RWD version will increase demand and appeals to buyers who live in the sunbelt states.

This is the version I reserved in 2019. I have been waiting for the RWD order banks to open up as I don't require an AWD pickup.

I do hope that Tesla makes a locking differential an option on the RWD trim.

 

[REM]

I predict we will see a RWD version sometime in the spring, around Q2.

CT demand has slowed and the more affordable RWD version will increase demand and appeals to buyers who live in the sunbelt states.

This is the version I reserved in 2019. I have been waiting for the RWD order banks to open up as I don't require an AWD pickup.

I do hope that Tesla makes a locking differential an option on the RWD trim.

I'm not quite sure how removing a single motor will bring the cost down though. Surely they wouldn't start producing a different battery pack, right?

Anyone know the replacement cost of the rear motor?

 

[Deleted member 17810]

To answer ops question about how the motors throw power around to different wheels.

Tesla's pm motors have an open diff. Traction control is then handled by the brake system.

 

[not_elon_]

Single mother Tesla?

 

[scottf200]

Found it



Permanent motor goes to the rear.

So just the AWD setup without a front motor then.

YT link to 34:21 powertrain spot.

 

[HaulingAss]

I predict we will see a RWD version sometime in the spring, around Q2.

CT demand has slowed and the more affordable RWD version will increase demand and appeals to buyers who live in the sunbelt states.

This is the version I reserved in 2019. I have been waiting for the RWD order banks to open up as I don't require an AWD pickup.

I do hope that Tesla makes a locking differential an option on the RWD trim.

I think a rear locker will be standard on the single motor variant. All the other drive units with a single motor per axle have locking differentials so this will simplify production.

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