How The Koenigsegg Regera Hits 248 MPH Without A Gearbox (2015)

Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by chrisbennet on Monday October 22, 2018 @02:55AM (#18272686)

Fun fact: The Lohner-Porsche had a gas motor and 4 electric motors; one in each in wheel in 1900.

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by zepolen on Monday October 22, 2018 @03:12AM (#18272752)

Cool but not the system I'm thinking of:

A complete real time tweaking of per wheel outputs based on live slip/velocity/momentum for perfect AWD.

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by EmbarrassedFuel on Monday October 22, 2018 @03:28AM (#18272813)

In addition to the sls this idea is deployed to some extent in IC cars as well: electronic limited slip differentials can send continuously varying torque to each wheel, see the Porsche 918 spyder (combo electric and IC) or the Nissan GT-R which has a famously odd driving characteristic as a result of the computer controlled torque vectoring.

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by kingkongjaffa on Monday October 22, 2018 @04:35AM (#18273064)

Formula Student Cars have had this for years, check out TU Delft Formula Student Electric vehicle.

Full AWD Torque vectoring.

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by tmrmn on Monday October 22, 2018 @03:22AM (#18272792)

AFAIK the Mercedes SLS Electric Drive did that in 2013 https://media.daimler.com/marsMediaSite/en/instance/ko.xhtml...

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by oldboyFX on Monday October 22, 2018 @06:49AM (#18273571)

A Croatian company built two fully electric hypercars with 1 motor per wheel and a torque vectoring system:

Rimac Concept One (the old model):

- Acceleration: https://www.youtube.com/watch?v=eT7KKxoAvvk

- Presentation at Stanford: https://www.youtube.com/watch?v=1FsrgJ66wUw

Rimac Concept Two (the new model, they plan to build ~150 of them):

- Geneva motors show: https://www.youtube.com/watch?v=XvjvYzzBh-k

- Company website: http://www.rimac-automobili.com/en/

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by davidrm on Monday October 22, 2018 @07:10AM (#18273665)

We, Rimac, are also supplying Koenigsegg with the battery packs for Regera, feel free to AMA, hopefully I'll be able and allowed to answer :)

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by cgio on Monday October 22, 2018 @02:54AM (#18272683)

Yes, I've been imagining this too since 25 years ago now, also thinking how it would not need turning wheels, just power differential like paddling a boat. Not sure if this part can be done though or if it would break under the pressure... I should have studied engineering to find out.

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by MertsA on Monday October 22, 2018 @04:41AM (#18273084)

No turning wheels means no parallel parking. Zero turning radius would be cool, but even with complete differential steering that would scrub the tires a bit much. I don't think you could practically remove steering tires entirely. I think you're still stuck with a rack and pinion, ball joints, tie rods, strut bearings, etc so even with AWD with independent electric motors on all wheels differential steering isn't really that useful. On a performance car, it'll help with handling around turns. I don't see that becoming commonplace on average cars because of the added cost.

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by EmbarrassedFuel on Monday October 22, 2018 @03:30AM (#18272820)

This is how tanks steer! And also (to some extent) why using them on roads ruins the roads. If you tried in a traditionally wheeled car then all of the drive shafts would snap though!

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by ddalex on Monday October 22, 2018 @05:10AM (#18273194)

I used to think that the treads actually ruin the road because it changes to contact surface on which you apply the power differential from a line (on a tire) to a rectangle(the tread), i.e. it tries to rotate a flat surface which can't be rotated, so somethings got to give. Arguably a tire wouldn't have the same problem.

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by zepolen on Monday October 22, 2018 @03:07AM (#18272736)

No steering wheel...that is an interesting idea, I don't think pressure would be a problem, but sensitivity might be.

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by baybal2 on Monday October 22, 2018 @03:04AM (#18272716)

Chinese lsevs do exactly that. One banal BLDC for each wheel, but more often just two

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by rodgerd on Monday October 22, 2018 @04:44AM (#18273096)

Your wish is granted: https://www.youtube.com/watch?time_continue=718&v=qeXZs_XAmM...

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by zepolen on Monday October 22, 2018 @06:44PM (#18279234)

Woah! Looks like it is. https://doubleapex.co.za/schaeffler-audi-4e-performance-conc...

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by wil421 on Monday October 22, 2018 @12:45PM (#18276182)

Why not let the differential(s) distribute the power? I’m sure one or two larger motors is better than 4 small ones.

I would like to see a serious off-road EV.

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Re:How The Koenigsegg Regera Hits 248 MPH Without A Gearbox ... by aasasd on Monday October 22, 2018 @05:24AM (#18273257)

Afaik big trucks had that for quite some time now.

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