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[LAT] Runaway Prius hits 90 mph before stopping with aid of CHP - Page 29

post #281 of 400
First of all if you TURN YOUR CAR OFF you loose breaks and power steering!!!!!
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post #282 of 400
Quote:
Originally Posted by Zeppelin 707 View Post
First of all if you TURN YOUR CAR OFF you loose breaks and power steering!!!!!

NO NO NO NONO!


You do NOT lose your brakes. You merely lose the power assist. Trust me when I say this, it is still possible to lock the tires up. You just have to man up and actually push on the pedal.

As far as losing power steering goes, you do retain the ability to steer the car. I'm out of shape, fat and lazy, and I can manhandle a 5500 pound truck with neither power brakes or power steering, and have done so in the past(and still do with no power brakes) so I think anyone else with four working limbs can do the same to a tiny little econobomb.




There used to be a day when disc brakes were only an option on high-end cars, and power steering/power brakes were novelties reserved for royalty and dictators. People did fine back then. People can do fine now, too.
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post #283 of 400
Ive never driven a prius, but surely it has a clutch so you can just disconnect the engine? Or is that TOO easy.
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post #284 of 400
Quote:
Originally Posted by Mach 5 View Post
Ive never driven a prius, but surely it has a clutch so you can just disconnect the engine? Or is that TOO easy.

The only cars that have a clutch pedal are H-gate manuals and a select few sequentials. No automatic, CVT or Hybrid comes with one, and most sequentials don't have one either. So no, there's no clutch, but you can try to put it in neutral.
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post #285 of 400
Quote:
Originally Posted by Mach 5 View Post
Ive never driven a prius, but surely it has a clutch so you can just disconnect the engine? Or is that TOO easy.
LOL, nah. Priuses are reversed for old folk here who want to look trendy and/or like they care about the environment.

Sadly there are few people over 30ish who drive a manual as their daily driver. And a vast chunk of the US can't drive stick at all.
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post #286 of 400
Speeding in a prius? Yeah, when pigs fly.
    
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post #287 of 400
Quote:
Originally Posted by TestECull View Post
NO NO NO NONO!


You do NOT lose your brakes. You merely lose the power assist. Trust me when I say this, it is still possible to lock the tires up. You just have to man up and actually push on the pedal.
i think you overestimate the power of unassisted brakes. If the driver pumps the brakes you're pretty much screwed in terms of braking.

YouTube- How to stop your vehicle if accelerator sticks
 
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post #288 of 400
Quote:
Originally Posted by ez12a View Post
i think you overestimate the power of unassisted brakes. If the driver pumps the brakes you're pretty much screwed in terms of braking.

YouTube- How to stop your vehicle if accelerator sticks
I'm pretty sure that happened because he was riding the brakes for so long they cooked. In any case, there's no reason to pump the brakes if you have boosted brakes and ABS. Pumping power boosted brakes is for when you don't have ABS and you're driving in the snow or ice or whatever and you accidentally lock up your brakes (but don't want to, so you let go and push them again until they lock up again, then you release and reapply, and repeat if they lock up again). Or if your brakes aren't boosted and it's just your calves and the cylinders, pumping can help to build up pressure (I do this a lot when flying).

I have turned my jeep off at 50mph before (trying to diagnose a noise) and had no trouble with steering or braking. Just don't turn the key so far that you lock the steering wheel.
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post #289 of 400
As of others have said. This is why I only buy Honda, and 90's Honda's for that matter. These new computer systems in cars are absurd. This is also another reason why I would only buy a manual car. Much easier to stop the car.

Hence, the JDM Integra in my avatar. Toyota hasn't released a car worth my attention in a long time.
post #290 of 400
Quote:
Originally Posted by ez12a View Post
i think you overestimate the power of unassisted brakes. If the driver pumps the brakes you're pretty much screwed in terms of braking.

YouTube- How to stop your vehicle if accelerator sticks
Dude I drive a 1985 F150 that lost power brakes months ago. I can still lock up all four 235/75R15 Goodyears on it(The stock tire is a 205/70R15 AFAIK, so I have even more grip than factory).

It's not that hard to stop a vehicle without power assist. Just man up and step on the brakes. I'm not terribly fit. I'm 275 pounds, I'm lazy and by most accounts actually a bit on the weak side(I have to call on friends to bust loose paticluarly tight bolts all the time. Sometimes that friend is Mr ImpacT gun, sometimes it's a person, but the point still stands), yet I have no trouble manhandling a car's controls if need be. It's not like I'm Mike Tyson or anything, so if I can do it, anyone can do it.

If you can't stop a vehicle without power assist you have no business driving in the first place as brake boosters LOVE to let go.

Quote:
Originally Posted by purduepilot View Post
I'm pretty sure that happened because he was riding the brakes for so long they cooked.
Yeah, probably. Cooked brakes tend to reduce stopping power significantly, hence the installation of runaway ramps on any steep downhill section of interstate semi trucks use.

Quote:
Pumping power boosted brakes is for when you don't have ABS and you're driving in the snow or ice or whatever and you accidentally lock up your brakes (but don't want to, so you let go and push them again until they lock up again, then you release and reapply, and repeat if they lock up again).
You aren't supposed to be going a speed where the brakes locking is a concern in the snow anyways

Quote:
Or if your brakes aren't boosted and it's just your calves and the cylinders, pumping can help to build up pressure (I do this a lot when flying).
If your brakes need to be pumped to build up pressure, there's air in the system somewhere. They need to be serviced.

Quote:
Just don't turn the key so far that you lock the steering wheel.
This is impossible if you use only one hand to do it, or drive automatic. The lock position always has some sort of interlock, on manuals it's a button on the column somewhere and on automatics it's disabled by placing the car in park.
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