Rear wheel steering turning radius showoff by Cybertruck in cul de sac u-turn video

[Deleted member 12457]

That was a wide cul-de-sac on a fairly wide street. I was hoping to see the CT make a U-turn at a signal, turning into the second lane without a problem. The cul-de-sac was an easy turn. My 2013 Tacoma can do this easily without rear-wheel steering, which is what I hoe the CT can do.

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[AlDente]

I hate to be a nit picker (no I don't) but since it was a cul de sac that wasn't, technically speaking, a U turn.

Ok, Ilike many here, I need to get a life which I will, once I get my CyberTruck.

 

[AlDente]

That was a wide cul-de-sac on a fairly wide street. I was hoping to see the CT make a U-turn at a signal, turning into the second lane without a problem. The cul-de-sac was an easy turn. My 2013 Tacoma can do this easily without rear-wheel steering, which is what I hoe the CT can do.

The Tacoma is a tiny truck and so, not a CYBERTRUCK!

 

[Sirfun]

Check out the tailights. That's a nicer set up. Especially when he hits the brakes, it's all the way across the tailgate.

 

[SpaceYooper]

It looked good but the cul-de-sac is not much of a test. I can do that in my F-150 on 35s today.

 

[CyberGus]

I hate to be a nit picker (no I don't) but since it was a cul de sac that wasn't, technically speaking, a U turn.

So… a “sac turn”?

 

[Diehard]

Sweet, I definitely could use that.

 

[FutureBoy]

Ok, Ilike many here, I need to get a life which I will, once I get my CyberTruck.

I'm starting to think that as CT's start getting delivered, we are slowly going to start loosing commentary from regulars as they each in turn take delivery and then fall off the map because they are "getting a life".

 

[CyberGus]

I'm starting to think that as CT's start getting delivered, we are slowly going to start loosing commentary from regulars as they each in turn take delivery and then fall off the map because they are "getting a life".

Follow my Insta if you miss me

 

[FutureBoy]

Follow my Insta if you miss me

You don't have an OF?

 

[CyberGus]

You don't have an OF?

I don’t even have a Twitter anymore ?

 

[FutureBoy]

I don’t even have a Twitter anymore ?

LOL. No one does... But for years I've been told that X marks the spot.

 

[AlDente]

So… a “sac turn”?

or, the double entendre, sac up.

 

[AlDente]

I'm starting to think that as CT's start getting delivered, we are slowly going to start loosing commentary from regulars as they each in turn take delivery and then fall off the map because they are "getting a life".

We can only hope...

 

[PilotPete]

Just a note...

Rear wheel steering is convenient in a U-turn, or parking, or lots of tight stuff. But the greatest advantage is the safety aspect.

RWS, when fully implemented, works not just at low speed, but is best at high speed. While it turns opposite the front wheels in low speed, it turns the SAME way in high speed maneuvers. Why? (boring explanation to follow) When the rear wheels don't turn, a high speed lane change or evasive maneuver shifts the weight to the outside of the vehicle. So if you are moving over to the left, all the weight wants to transfer to the right. In addition, since the rear lags behind the front and causes a rotation about the vertical axis, the weight transfer is mostly behind the front wheels (where the center of gravity is located). 99% of the time, this is no big deal. BUT, when you then make a hard turn back to straighten out (in this case, to the right) the opposite happens, and since the vehicle is leaning (to the right) already, then there is a massive weight shift. And since the tires are the only thing causing the turn, the weight is above the contact and causes an exaggerated rolling motion. This also causes an additional moment and "swing" to the rear end. It does't want to change direction, it hasn't even finished the first turn! Next thing you know, the vehicle has rolled over. SUVs are the most susceptible as they normally have the highest unladen CG.

BUT, when the rear wheels turn in the same direction, the rear doesn't lag in the turns. Instead of a rotation around the CG to make it turn, there is a straight shift to the left, and the same to the right. Far less opportunity to roll the vehicle, far less change for the rear end to "whip" or step out.

Think of an inner tube rider behind a skit boat. At speed, make a hard left followed by a hard right. The rider gets swung WAY out each time, and the lateral movement gets amplified with each turn. Now think of a water skier turning at the same time the boat does. No outward swing. Same safety aspect with the RWS.

I think beyond the cool factor and the tech and the ease of low speed maneuvering, Tesla is trying to make all their vehicles safer. And that's not a bad thing.Why don't the legacy guys do it? Probably cost and complexity. But if you can build it cheaper than everyone else, and have figured out how to be different, it ain't that hard.

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