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Discussion Starter · #1 ·
How fast would a Jeep grand Cherokee be going if it crossed a smallish parking lot--as you might find at an average police station, 30-40 yards maybe?--if the driver floured it for the length of the parking lot?

This is for a story I'm working on. Keep in mind, my driver is hitting something just before he leaves the parking lots, so any impact info would also be helpful in terms of damage accuracy.
 

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Discussion Starter · #2 · (Edited)
Lol! 38 views so far and no one has a clue???

Okay, here's the answer for all the jeep guys in the first 38 views who really don't know their jeep. And this may very a bit from model to model and year to year, but The 2012 model 4WD V8 Did 0-60 in 8.2 seconds.

So I'm going to estimate 3 to 4 seconds in getting across a parking lot of the average sized police station around here...but again, this may very from town to town and state to state. But it's my story and therefore my universe, so this would clock the jeep between 25-30 MPH.

Sound reasonable?
 

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Discussion Starter · #4 ·
I'm watching Big bang theory and I still don't feel smart enough to make a good approximation.

Lol! It's a bit of averaging the facts and coming up with something that's feasible without going to the Hollywood extreme...for me any way. And for the crash tests of that same year jeep...not so good. Take a look:

Adult occupant
In the frontal impact, the driver's inboard seat rail was found to have very nearly broken in two, and was mainly held
together only by the threaded steel rod which controls fore-aft adjustment of the seat. The break occurred just at the
point where the lower anchorage for the driver's seat belt attaches to the rail, and is thought to have been caused by
the high tensile forces in the belt during the test. As a result, there was additional forward movement of the dummy
which contributed to 'bottoming out' of the airbag i.e. there was insufficient pressure in the airbag to prevent the
driver's head from making contact, through the fabric of the airbag, with the steering wheel rim. Euro NCAP has been
informed that Jeep are investigating the cause of the seat rail failure and intend to improve the seat track design, but
have no current plans to re-work existing vehicles. Although dummy readings were good, structures in the dashboard
were thought to present a risk of injury to the knees and femurs of occupants of different sizes and to those sat in
different positions. Maximum points were scored in the side barrier test but, in the more severe side pole impact,
protection of the chest was rated as marginal. The Grand Cherokee has an 'active' head restraint which senses when
a rear-end impact has occurred and moves the restraint forward to minimise the time to restrain head movement.
Jeep showed that the system responded in a broad range of accident severities, and the whiplash tests were
performed with the system active. Nevertheless, the protection provided against neck injuries in a rear-end collision
was rated as marginal.
Child occupant
In the frontal impact, the 3 year dummy did not move forward excessively. However, on rebound, the dummy's head
contacted the trim on the rear door pillar and the car lost all points for protection of the 3 year dummy in that test. The
passenger airbag cannot be disabled so a rearward facing child restraint should not be used in that seating position.
The dangers of doing so are not clearly labelled in the car.
Pedestrian
The bumper provided good protection in all areas tested and scored maximum points. However, the front edge of the
bonnet was poor in all areas tested. In almost all areas likely to be struck by the head of a child, the bonnet provided
poor protection. However, protection provided to an adult's head was mixed with areas of good and poor protection.
Safety assist
Electronic stability control is standard equipment on the Grand Cherokee and met Euro NCAP's test requirements. A
seatbelt reminder system is standard equipment for the driver and front passenger seats. A sped limitation device is
not offered on the Grand Cherokee.
 

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Lol! 38 views so far and no one has a clue???

Okay, here's the answer for all the jeep guys in the first 38 views who really don't know their jeep. And this may very a bit from model to model and year to year, but The 2012 model 4WD V8 Did 0-60 in 8.2 seconds.

So I'm going to estimate 3 to 4 seconds in getting across a parking lot of the average sized police station around here...but again, this may very from town to town and state to state. But it's my story and therefore my universe, so this would clock the jeep between 25-30 MPH.

Sound reasonable?

Who you gonna call?............MythBusters!

Sorry, I had to do it Robert.
 

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Are we talking base Grand Cherokee or some Hemi SRT version? Jeep hasn't made a totally honest Grand Cherokee since 1998, that's my opinion. But regardless of model year or trim, I would peg the Jeep at around 25-30 mph in a small parking lot. That's hauling @$$, and is a realistic window of performance.

What's the "something" that the Jeep hits in the story, a parking pylon or a '73 Chrysler?
 

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I was looking at this post last night.

being a retired auto mechanic and have NO professional data.
No engine data, drive line data, tire data. weight data. weather data. 2 wheel/ 4 wheel drive data. gear ratio data.

30 mph maybe.

I know NO HELP.
 

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Discussion Starter · #11 ·
Okay, I'm going with my early estimation of 25-30, which seems a good average...plus I don't want the accident to kill the guy, just leave him dazed and confused, probably bunged up some.

So thanks, the thread at least gave me enough feedback to feel I was in the realm of possibility. And since much of the story is not within the realm of possibility (being more along the lines of science fiction/ horror ) you want whatever is real in the story to seem credible in order to pull off the INcredible parts.

I haven't attempted to write anything of this type in quite some time. It's only a short story while attempting to regain my writing chops. Which is all I'm going to say on that score for now. Once I'm moving along on other things, if I still like the story by then, I thought maybe I would put on kindle ebooks for .99.
 

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Discussion Starter · #12 ·
On a sidenote, and at least trying to keep in terms with something automotive related in my OT among so much unrelated OT...

I really did think that Jeeps were tougher due to their past reputation. Like our favorite line of die cast, the amount of metal has been cheapened. Made me glad I bought a Ford. And just out of curiosity, I looked up my own car (2008 Taurus), which did quite well on it's safety tests. I remembered a couple of years back when my sister-in-law was in an accident with her Ford Focus, they told her the car probably saved her life.

I know Ford has it's naysayers--and what brand doesn't--but it's good to know they are still making them a little tougher than some makes.

Of course, I haven't checked the 2012 models to see if this still holds true.
 

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Robert, I would agree about the 30-40 mph guesstimite. My jeep has had work done so no longer stock. I wrecked my fist Jeep Cherokee @ 40-45 mph frontal collision, creamed the nose of the Jeep and not a scratch on me. Was passanger in a 94 Exploder not too bad of a hit and again not a scratch. Rear ended in a 99 Dakota I was stopped other guy was around 45-50 and slowing down to avoid me, wrenched my back and neck pretty bad. Hit a deer in mid 80's Midsize olds, some cuts to the face. Head on collision at 55-60 1993 Ford Escort. Tons of damage to the car and myself that still haunts me to this day.
 

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Discussion Starter · #14 ·
Thanks for the info, Chris. It would seem that most accidents, including my own, are never predictable...and quite possibly the car has little to do with it at all. Unless the car is badly mangled (my apologies for the folks who don't like to hear about such things).

I would almost say that most accident that are within the speed limits, are pretty freaky in how some walk away from what looks like serious damage, and in other cases, people have been seriously hurt in accidents that don't look that bad on the surface.

I'm going to hazard a guess and say the angle of impact, and possibly the angle of your body, has a great deal to do with it in many cases.

Meantime we have the law trying to decide what a serious injury is, if it exists, and how much of it was actually accident related...as I'm sure you can relate to, Chris. It's a bit of a farce from that standpoint.

And I guess no one really has enough concrete facts as to why the large degrees of injuries can, or do happen. And if such scientific facts have been proven, they have certainly been silenced by legal and medical competitors. So my trying to imagine what might happen for a story, is pretty difficult. All I can do is try to make it seem believable by what's been presented.
 

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I T boned a deer in my 94 Cherokee doing 75 MPH. Took out the header panel, bumper and fender. I barely noticed the impact. The deers had swung around and hit the passenger side door.

$200 and it was all fixed.
 

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Discussion Starter · #16 ·
I T boned a deer in my 94 Cherokee doing 75 MPH. Took out the header panel, bumper and fender. I barely noticed the impact. The deers had swung around and hit the passenger side door.

$200 and it was all fixed.
Oof! Bad for the deer, but glad you didn't get hurt. And the Jeep sounds like it came through pretty impressively here.
 

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That's why you should buy a jeep wrangler. Those are tanks. I hit the open end of a concrete drainage pipe (the ones that go under roads ) head on in a YJ wrangler one night while goofing off driving across a field

Picture a dog leg road that cuts 90 degrees to the right then go 100 yds and another 90 degree turn to left. I figured I cut through the field to the right and the pop straight into the straight away basically driving a line makin the base of the invisible triangle.

Well the road was elevated higher than the field so when I burst through the tree line at what I remember to be close to 30 mph I went to 0 when the pipe stopped me.

All it did damage wise was bent the bumper end a little bit. It was a square dead on hit. No frame damage at all. Impact was such that a 6v lantern battery that was in the back became a forward moving projectile that when it hit te front seat it got crumpled up similar to a can.

That is a rock solid vehicle right there. Nothin but that little bend to the C beam bumper.

Have owned 5 or 6 since and have 3 of them now of various generations.
 

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That's why you should buy a jeep wrangler. Those are tanks. That is a rock solid vehicle right there. Nothin but that little bend to the C beam bumper. Have owned 5 or 6 since and have 3 of them now of various generations.
They probably are solid, but they are super cramped for taller folks. I sat behind the wheel of a couple of the former generation Wranglers years back, and my knees were up against the dash. In an impact, it's nice to have a little wiggle room. Nothing smaller than an XJ for me.
 

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Discussion Starter · #19 ·
They probably are solid, but they are super cramped for taller folks. I sat behind the wheel of a couple of the former generation Wranglers years back, and my knees were up against the dash. In an impact, it's nice to have a little wiggle room. Nothing smaller than an XJ for me.
Sometimes that extra room can make all the difference. On a different make, and I'll probably get a slew of different opinions on this as well, but I sat in an '08 Malibu and had the same problem. Nice looking car, but the steering wheel was in my lap, everything around me was just closing in it seemed. I think that adjusting the seat and wheel would've made some difference...and I'm sure I would've gotten used to it, but I'm figuring why force comfort? It's just one of those things that will end up getting old very fast.

But here, much like all the preferences towards certain brands of diecast, or base material, I think it's really a matter of personal taste, or what we get used to.

Okay, let's hear how comfy those Malibus REALLY are :tongue:
 
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