On Mar 15, 9:55 am, email@example.com (Doug Miller) wrote:
I have seen situations where people have had their seats set too far
back from the steering wheel which reduces the power that could be
applied to the brake pedal. Mind you most of these people where fairly
obese and their bellies too large. Nevertheless this could be a factor
in stopping a run-a-way vehicle.
IME most newer cars have the opposite problem - when you set the seat
so that you have a comfortable reach to the steering wheel, your feet
are too *close* to the pedals. My older cars do not have this
problem. I do not know why this is, but my theory is that it is due
to concerns about airbag deployment.
Agree; could be a factor. saw a guy in a bank recently who had a
stomach so large he looked pregnant with triplets!
Don't know how he could even reach the steering wheel!
Saw a TV programme, many years ago, on TV, about an advanced driving
course, where the students were learning how to skid their vehicle's
One petite female student couldn't be taught to apply the brakes hard
enough to lock the back wheels.
Until the instructors discovered that the seat in her particular car
(IIRC it might have been one of those older smaller Fords that used to
catch fire if rear-ended?) could not be moved far enough forward for
her to apply the brake pedal fully.
She had been driving for some time before that. And seemingly had not
been applying the brakes fully even in a crash stop' situation'!
Don't remember much else about the course except that by putting a
pillow behind her back she was able to apply the brakes fully!
On Mar 15, 11:55 am, firstname.lastname@example.org (Doug Miller) wrote:
I agree, I had a hot 327 Chevy Impala run away with me when the motor
mounts broke. Standing on the brakes choked the engine down. Since the
computer also controls braking on the Prius I wouldn't doubt if that
is malfunctioning too.
A computer gets involved for regenerative braking. You think there are
no brakes with a dead battery?
If you push hard on the pedal you get mechanical hydraulic braking -
just like on any car when the power brakes fail.
This was verified by a Prius dealer service rep.
At this point, anybody who gets a paycheck connected to Toyota is
automatically disqualified as a trusted source. They have a massive
motive to mislead in any way possible.
Has any one proved that the ABS system couldn't possibly malfuntion
and rapidly "pump the brakes" causing it to appear as if the driver
had done so, when in fact, all he did was stand on the brakes?
Didn't think so.
Do you think it is reasonable that there is not a mechanical-hydraulic
base function at the bottom of the pedal travel, just like there is on
every car with power brakes - stops the car if the 'power' function fails?
So there was a failure in the throttle control and another failure in
the ABS control? (Maybe they are Windows applications.) And this person
had both failures? (Prius is one of the cars that has had throttle
runaway.) And this person, coincidentally, also refused to shift into
neutral as he was told numerous times?
The California runaway is sounding more each day like fraud.
That is why representatives from the Highway Safety people were also
involved, not just Toyota.
Yes, if you read up on them and how they work. You should also look at the
report and how they determined the brakes were manually applied, not by the
ABS. My guess is the driver had no idea how much information is recorded
on his car and if he did, he would not have tried the fraud.
It may take some time, but he is probably going to share a cell with Balloon
Boy in the future.
In any car with power brakes, if the power brakes fail and you push the
pedal hard the brakes are applied by a simple mechanical-hydraulic
system, just like before power brake assist was invented. If the power
function fails, you still have the mechanical backup (but it takes a
more pedal pressure).
It is inconceivable that Prius would not have that function as a backup
on its brake system (which has a computer to control regeneration). My
reading of post I responded to is that since Prius brakes are computer
controlled, if you loose the computer you have no brakes.
Brakes are, of course, only applied when you push the pedal.
The Prius (and similar hybrids) are a whole different animal and I
don't know much about them. There fore I usually don't comment on
their specific controls.
The 'loose power and it stops the car' is too far out there though...
I had to admire my 70 year old mother. She lost the water pump on a
junker of a Mercury station wagon with power everything. I pushed her
almost 20 miles including through a twon with 3 stop lights. In
retrospect I should have paid for a tow.
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