Munro teardown comparison: Rivian dual motor vs quad motor

[Lizardo]

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TL;Dr???

 

[WorldComposting]

Okay just watched and lots of interesting things. One question I have is at Video 12:15 you can see he moves what appears to be an oil filter. Would this need to be maintained/changed or is this good for a lifetime?

 

[R1Tom]

I am still surprised Rivian isn't allowing that disconnect arrangement to be shut off. Like in the quad. Why does it always have to be operational? Seems like a failure point with high use, and now that it is internal, also seems more work to get to when replacement needed.

 

[MountainBikeDude]

Interesting little thing at the end of the video, Sandy drives the Dual Motor and does a launch in the parking lot. You immediately hear the tires start chirping as they search for grip. This is a perfect highlight of the difference between the two drive trains, where the dual is a conventional ABS differential system, and the quad is per wheel motor control.

My Quad R1T has never chirped, or burned out doing a Sport launch despite being on 20"AT's which underlines the extremely low latency in it's reaction to changing conditions.

 

[MountainBikeDude]

I am still surprised Rivian isn't allowing that disconnect arrangement to be shut off.

In what sense?

 

[Dark-Fx]

My Quad R1T has never chirped, or burned out doing a Sport launch despite being on 20"AT's which underlines the extremely low latency in it's reaction to changing conditions.

I'll occasionally get chirp if the conditions are right but honestly the 22s on my truck don't usually make noise like that even when they are slipping. The 21s on the R1S have been plenty chirpy though.

 

[Dark-Fx]

Okay just watched and lots of interesting things. One question I have is at Video 12:15 you can see he moves what appears to be an oil filter. Would this need to be maintained/changed or is this good for a lifetime?

They are using oil in the motor versus the bosch unit which didn't. There's also a potential point of wear in how the disconnect is integrated and designed versus the bosch one that was basically just an external device bolted onto the drive unit. It's probably designed to be a lifetime fill though, the oil won't get broken down from heat like it will in an ICE.

 

[R1Tom]

In what sense?

Like in the quad motors.....if I want max efficiency, I switch to conserve and it disconnects the rear motors. If I don't care about max efficiency, I can be in any other mode and keep the rear motors engaged.

So in the sense I may not want the computer algorithm deciding when I want power at rear and subsequently lock and unlock the rear motor, I would rather have some daily drive type modes that simply keep that motor engaged.

 

[karthikkamaths24]

Like in the quad motors.....if I want max efficiency, I switch to conserve and it disconnects the rear motors. If I don't care about max efficiency, I can be in any other mode and keep the rear motors engaged.

So in the sense I may not want the computer algorithm deciding when I want power at rear and subsequently lock and unlock the rear motor, I would rather have some daily drive type modes that simply keep that motor engaged.

I think sport mode keeps all motors active and sends more torque to the rear when needed.

 

[Nermal]

I would have liked to have heard some acknowledgement that doing the Bosch quad to start was a reasonable choice as it delivered differentiated quad capabilities in time to get them to market when they did. I think the Rivian-native dual motor is an awesome addition but had they taken the time to start with it and then had a "me too" dual motor as their gambit, I think they'd have a bigger viability challenge today.

 

[rbr19870445]

I would have liked to have heard some acknowledgement that doing the Bosch quad to start was a reasonable choice as it delivered differentiated quad capabilities in time to get them to market when they did. I think the Rivian-native dual motor is an awesome addition but had they taken the time to start with it and then had a "me too" dual motor as their gambit, I think they'd have a bigger viability challenge today.

Agreed. I think the dual motor is very significant for Rivian to stay viable but the Quad motor was necessary to get them into the market and all the different drive modes are fantastic. I can't rave enough about rally mode for hooning around town.

 

[mini2nut]

Very impressive.

Now Rivian needs a heat pump for cabin temperature heating/cooling. Does anyone know if Rivian is working on something?

 

[DuoRivians]

Enduro motor quad setup… when? That’ll be awesome

 

[Dark-Fx]

Enduro motor quad setup… when? That’ll be awesome

Not soon enough!

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