Thread: End of Toyota?

Originally Posted by jmw_man

Originally Posted by deathgodusmc

Originally Posted by draco7891

It wouldn't flip because the CG is so low, the energy required to lift the car from that position would be astronomical, well beyond the capability of the engine or the physics involved to do so.

It wouldn't flip because it's impossible to engage reverse gear while travelling forward.

It wouldn't flip because of that little lockout button on your gear selector. You can freely move the selector to neutral from drive without pressing the button, but you must press the button to shift from neutral into reverse, or indeed into any of the critical gears (park, the discreet lower gears, etc.).


The other week I had to help an older lady with a brand spanking new VW Beetle find the fuel door release on her car. She didn't know how to put gas in her car.

I say good on Toyota for including a built-in IQ test in all their new vehicles. Maybe now some of the massive fucking idiots on the road will eliminate themselves from the gene pool.

Draco

Agreed i assumed he was refering to rolling verses a full on flip.

Rolling would have been physically possible if the car got turned sideways but I think the guy would have been okay with the rest of the reasons Draco mentioned.

To roll your car you just need the right moment on the vehicle.
Where are the statics and dynamics gurus at?
I'm not gonna do the math but:

if the car turns sideways, the friction force located at ground level will drastically increase to a value of the weight of the vehicle times the smallest kinetic friction coefficient between rubber and concrete or asphalt.

I'm not sure what it would take to overcome this, never been good at dynamics, but it would be interesting to see....





I'm guessing there would be a

Actually it's pretty easy to roll a car that is going 80 mph. Just for instance if he got the reverse gear to ingage without tearing the tranny out. The sudden decrease in speed could have caused the car to go sideways. Once your sideways at 55 your toast. The car is going to roll for a couple reasons.

1 The tires are more than likely not going to stay inflated on the side that is the foward side of motion. Which is going to result in the rims digging into the asphalt.

2 Increased air flow under the vehicle gives substatial lift due to cars are not designed to have air entering the bottom side of the car. That is why high wind from the sides give people a hard time driving.

3 nascar has proved this over and over hence why they now have slats in the roof of the cars to help keep them from rolling.

4 Anyone that lives in california can tell you how every damn accident on the highway ends up with one car upside down. Don't ask me how they manage it but they do.

Originally Posted by draco7891

Originally Posted by jmw_man

Rolling would have been physically possible if the car got turned sideways

Bodies in motion tend to rotate around their CG; the CG of a Prius, being a front-engined, front-wheel-drive vehicle is fairly far forward. Even assuming you could lock all 4 tires up (and you can't, because they come with ABS), the car would behave like a dart, heavy-end first: that is, the front of the car would tend to continue forward, the rest of the car trailing right along behind.

Assuming Captain Underpants doesn't jerk the wheel hard to one side, the car would neither flip nor roll nor tumble nor turn inside out.

Draco

That is assuming that everything is going as it is designed to. Of which i have to say the recall makes clear that is not the case. Your example goes on a premise that the vehicle never has to make a turn. We have to be honest hear 80 mph is not really a rocket on the highway. Now if he were to over steer or have to quickly avoid a vehicle center of gravity no longer is the key player momentum is.

It only takes a small amount of oversteer to have the ass break loose exspecially on a front engine front wheel drive car. At least rear wheel drive has some amount of additional weight at the center of the vehicle and the rear. Where as a front wheel drive has all the heavy componants at one place.