NEVS Emily GT: SAAB’s Secret EV With 600 Mile Range - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Irace86.2.0 · 06-29-2023, 01:23 PM

Red-86 · 07-01-2023, 12:10 PM

Nice looking car. The motors mounted in the wheel hub is an interesting if odd choice, in terms of it contributing to unsprung mass. Might not matter in an EV sedan where ‘performance’ driving is limited to straight line acceleration runs, but it has to be felt in the corners, no? I’m sure the instant torque vectoring on every wheel helps somewhat.

An interesting point I saw raised was how these compact hub motors could be used to more easily adapt some older ICE cars to functional EVs where normally there is insufficient room in the donor car for batteries + motors in board.

Irace86.2.0 · 07-01-2023, 04:17 PM

Quote:

Originally Posted by Red-86

Nice looking car. The motors mounted in the wheel hub is an interesting if odd choice, in terms of it contributing to unsprung mass. Might not matter in an EV sedan where ‘performance’ driving is limited to straight line acceleration runs, but it has to be felt in the corners, no? I’m sure the instant torque vectoring on every wheel helps somewhat.

An interesting point I saw raised was how these compact hub motors could be used to more easily adapt some older ICE cars to functional EVs where normally there is insufficient room in the donor car for batteries + motors in board.

They do mention the potential issues with unsprung mass, and that they obviously did their best to resolve it with suspension tuning.

You’re right that the design of these hub motors could allow manufacturers to better package EV drivetrains into existing chassis without having to design a different chassis or design multiple chassis like an ICE chassis and skateboard EV chassis . For instance, they could make a Toyota Rav4 ICE, hybrid and EV option, and while a bespoke EV chassis would be lighter and better, this could make EVs cheaper for manufacturers to produce, as they develop out their battery manufacturing.

Captain Snooze · 07-02-2023, 06:37 AM

Whoever creates these titles must not comprehend what they're writing: how the f*ck can it be a secret if there's a Youtube clip on the subject?
[/rant]

wbradley · 07-02-2023, 08:39 AM

Unsprung weight increase is compensated with suitable springs and dampers. This design is the oldest implementation of electrification. With all its tradeoffs they were able to produce an implementation that allows extreme simplification of a vehicle floorplan.

I couldn't help but wonder though how it will feel on a pothole compared to a conventional hub.

Lantanafrs2 · 07-02-2023, 08:49 AM

Hub motors are nothing new. Just ask an nsx owner

Irace86.2.0 · 07-02-2023, 10:07 AM

Quote:

Originally Posted by Captain Snooze

Whoever creates these titles must not comprehend what they're writing: how the f*ck can it be a secret if there's a Youtube clip on the subject?
[/rant]

I’ve said the same thing about Victoria’s Secret for years! Clearly Victoria isn’t keeping anything secret.

soundman98 · 07-02-2023, 10:37 AM

'round these parts, we just have victoria's secret.

as far as i'm concerned, victoria really should've kept her secret.

Irace86.2.0 · 07-02-2023, 10:49 AM

Quote:

Originally Posted by Lantanafrs2

Hub motors are nothing new. Just ask an nsx owner

Definitely nothing new. Tell us that you didn’t watch the video without telling us you didn’t watch the video.

Lantanafrs2 · 07-02-2023, 01:09 PM

I was responding to comments on unsprung weight.

Irace86.2.0 · 07-02-2023, 07:27 PM

Quote:

Originally Posted by Lantanafrs2

I was responding to comments on unsprung weight.

I don’t really get the NSX reference, but hub motors have been around almost since we have had cars on the road.

Lantanafrs2 · 07-02-2023, 07:54 PM

Quote:

Originally Posted by Irace86.2.0

I don’t really get the NSX reference, but hub motors have been around almost since we have had cars on the road.

The nsx uses front hub motors. It's a hybrid. I would assume they've addressed the issue of unsprung weight. Bradley can now smash a pothole and see what happens

Lantanafrs2 · 07-02-2023, 07:58 PM

I'm wrong about that. My apologies. The nsx used a twin motor system up front but not hub motors.

06-29-2023, 01:23 PM	#1
Irace86.2.0 Senior Member Join Date: Mar 2017 Drives: Q5 + BRZ + M796 Location: Santa Rosa, CA Posts: 7,884 Thanks: 5,668 Thanked 5,810 Times in 3,300 Posts Mentioned: 70 Post(s) Tagged: 0 Thread(s)	NEVS Emily GT: SAAB’s Secret EV With 600 Mile Range __________________ My Build \| K24 Turbo Swap \| K24T BRZ SOLD

07-02-2023, 06:37 AM	#4
Captain Snooze Because compromise ® Join Date: Jan 2012 Drives: Red Herring Location: australia Posts: 7,823 Thanks: 4,053 Thanked 9,565 Times in 4,199 Posts Mentioned: 60 Post(s) Tagged: 0 Thread(s)	Whoever creates these titles must not comprehend what they're writing: how the f*ck can it be a secret if there's a Youtube clip on the subject? [/rant] __________________ My car is completely stock except for all the mods.

07-02-2023, 10:37 AM	#8
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,676 Times in 6,782 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	'round these parts, we just have victoria's secret. as far as i'm concerned, victoria really should've kept her secret. __________________ "The time you enjoy wasting is not wasted time"

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07-02-2023, 08:49 AM	#6
Lantanafrs2 Senior Member Join Date: Jan 2018 Drives: 2013 frs red Location: South Florida Posts: 3,578 Thanks: 2,591 Thanked 3,141 Times in 1,690 Posts Mentioned: 6 Post(s) Tagged: 1 Thread(s)	Hub motors are nothing new. Just ask an nsx owner

07-02-2023, 01:09 PM	#10
Lantanafrs2 Senior Member Join Date: Jan 2018 Drives: 2013 frs red Location: South Florida Posts: 3,578 Thanks: 2,591 Thanked 3,141 Times in 1,690 Posts Mentioned: 6 Post(s) Tagged: 1 Thread(s)	I was responding to comments on unsprung weight.

07-02-2023, 07:58 PM	#13
Lantanafrs2 Senior Member Join Date: Jan 2018 Drives: 2013 frs red Location: South Florida Posts: 3,578 Thanks: 2,591 Thanked 3,141 Times in 1,690 Posts Mentioned: 6 Post(s) Tagged: 1 Thread(s)	I'm wrong about that. My apologies. The nsx used a twin motor system up front but not hub motors.

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