Front engine safer than rear?

Front engine safer than rear?

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Discussion

kambites

67,543 posts

221 months

Thursday 21st August 2014
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balls-out said:
one of the reasons that the inline 6 is becoming rare is the added challenge of crumple zone with such a long rigid lump at the front.
I thought it was more the bonnet clearance required for pedestrian impact legislation?

Sump

5,484 posts

167 months

Thursday 21st August 2014
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In the grand scheme of things, a car is as dangerous as you want it to be.

ZesPak

24,427 posts

196 months

Thursday 21st August 2014
quotequote all
Sump said:
In the grand scheme of things, a car is as dangerous as you want it to be.
Please, enlighten us, friend of mine got into an accident when he was going 0kph (= 0mph imperial, did the conversion for you), he broke his ankle and arm. Tell me, how did he put himself into that kind of danger?

Sump

5,484 posts

167 months

Thursday 21st August 2014
quotequote all
ZesPak said:
Sump said:
In the grand scheme of things, a car is as dangerous as you want it to be.
Please, enlighten us, friend of mine got into an accident when he was going 0kph (= 0mph imperial, did the conversion for you), he broke his ankle and arm. Tell me, how did he put himself into that kind of danger?
His parents decided to keep him rolleyes

james_gt3rs

4,816 posts

191 months

Thursday 21st August 2014
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paulrussell said:
I'd say a front engine car would be safer, as with a rear engine car you've got a fuel tank in front of you.
Fuel tank behind you in all the rear engined cars I've had...

ZesPak

24,427 posts

196 months

Thursday 21st August 2014
quotequote all
Sump said:
His parents decided to keep him rolleyes
Why the rolleyes, my point was that yes, you can drive a stbox or a bike, but if the inevitable goes wrong (it doesn't have to be your fault), safety does matter.
The old "you make it as safe as you want" therefore is utter tripe.

kambites

67,543 posts

221 months

Thursday 21st August 2014
quotequote all
Obviously there are exceptions, but the vast majority of RTA injuries are obtained in accidents which are at least partly the fault of all drivers involved.

fflyingdog

621 posts

239 months

Thursday 21st August 2014
quotequote all
paulrussell said:
I'd say a front engine car would be safer, as with a rear engine car you've got a fuel tank in front of you.
Esprit has 2 tanks behind the passenger cell.

Sump

5,484 posts

167 months

Thursday 21st August 2014
quotequote all
ZesPak said:
Sump said:
His parents decided to keep him rolleyes
Why the rolleyes, my point was that yes, you can drive a stbox or a bike, but if the inevitable goes wrong (it doesn't have to be your fault), safety does matter.
The old "you make it as safe as you want" therefore is utter tripe.
Why would you bring up such an obvious point?

balls-out

3,607 posts

231 months

Thursday 21st August 2014
quotequote all
Sump said:
In the grand scheme of things, a car is as dangerous as you want it to be.
No it isn't.....
It cannot be 100% safe. Nor can it be as dangerous a exploding a bomb in the cockpit of a 747 whilst over a densely populated city.

However is this really relevant to the OP's question as to whether front or rear is a better for crash protection?

Anyway in the "grand scheme of things" most things (particularly on PH) are totally irrelevant...

ZesPak

24,427 posts

196 months

Thursday 21st August 2014
quotequote all
Sump said:
Why would you bring up such an obvious point?
I'm sorry, we're probably misunderstanding each other.

What did you mean by this:

Sump said:
In the grand scheme of things, a car is as dangerous as you want it to be.

GraemeP

770 posts

229 months

Thursday 21st August 2014
quotequote all
balls-out said:
No it isn't.....
It cannot be 100% safe. Nor can it be as dangerous a exploding a bomb in the cockpit of a 747 whilst over a densely populated city.

However is this really relevant to the OP's question as to whether front or rear is a better for crash protection?

Anyway in the "grand scheme of things" most things (particularly on PH) are totally irrelevant...
What about if I drove it, laden with hand grenades, into a 747 bomb making factory (whilst setting light to my shoes), that has been set up in the most densely populated city in the word, next to a set of flimsy tower blocks full of families? THAT is more dangerous than your exploding 747...

balls-out

3,607 posts

231 months

Thursday 21st August 2014
quotequote all
GraemeP said:
What about if I drove it, laden with hand grenades, into a 747 bomb making factory (whilst setting light to my shoes), that has been set up in the most densely populated city in the word, next to a set of flimsy tower blocks full of families? THAT is more dangerous than your exploding 747...
Yes good point - clearly I've not given this enough thought.
BUT
Would you be more dangerous in a car with a front or rear engine - that's the key point.

hoegaardenruls

1,218 posts

132 months

Thursday 21st August 2014
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Baryonyx said:
The original A Class was notoriously unstable though, wasn't it?
Yep, as hinted at in my original post. Sorted to some extent I believe - much like the handling of early TT's which also liked going off the road backwards even though the engine was in the front.

hoegaardenruls said:
Wasn't the original Merc A-class designed so that the engine went under the passenger compartment in a frontal collision? Still, that assumes it didn't see an elk and topple over..

JoeMk1

377 posts

171 months

Thursday 21st August 2014
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As somebody alluded to before, I would think most mid/rear engined cars have a lower bonnet line than the equivalent front engined car. This would probably negate any advantage from the bigger crumple zone, especially against a 4x4. I certainly wouldnt want a head on with a Chelsea tractor in my MR2. Even at relatively low speed I would probably end up with its bumper in my lap eek

kambites

67,543 posts

221 months

Thursday 21st August 2014
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JoeMk1 said:
As somebody alluded to before, I would think most mid/rear engined cars have a lower bonnet line than the equivalent front engined car. This would probably negate any advantage from the bigger crumple zone, especially against a 4x4. I certainly wouldnt want a head on with a Chelsea tractor in my MR2. Even at relatively low speed I would probably end up with its bumper in my lap eek
Oh I don't know, that gives you a deceleration zone the entire length of the car you hit:

anonymous-user

54 months

Thursday 21st August 2014
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kambites said:
Max_Torque said:
The limiting factor in most frontal impacts these days is the wheel/tyre assy. (massive stiff wheel, that gets forced backwards into the footwells........)
Surely it can't be hard to design a system which deflects the wheels out beyond the sills in an impact?
Well, except for the fact that for 99.999999999999% of the cars life, you really don't want to be "ejecting" any of your wheels from underneath the car! ;-)

In actual fact, it is surprisingly difficult to control the path of the wheel/tyre in an accident, because it tends to get "trapped" in the wheel arch area and is held there by the (very stiff) suspension links etc. If you look under the plastic wheel arch liner of any modern car, you will see a massive pressed high strength steel stiffener / impact absorber fitted to attempt to catch the wheel/tyre and direct the loading out across the bulkhead, and not directly into the footwell:



kambites

67,543 posts

221 months

Thursday 21st August 2014
quotequote all
I suspect an Elise would direct them away from the passenger cell fairly effectively, given the shape of the tub:



It might propel a door hinge into the occupants at high speed in the process, mind. hehe

JoeMk1

377 posts

171 months

Thursday 21st August 2014
quotequote all
kambites said:
Oh I don't know, that gives you a deceleration zone the entire length of the car you hit:
I suppose its in the lap of the gods really, whether you'd fare better in a 'conventional' collision where your legs are at risk, or one like that where your face/torso is in the firing line...

kambites

67,543 posts

221 months

Thursday 21st August 2014
quotequote all
JoeMk1 said:
I suppose its in the lap of the gods really, whether you'd fare better in a 'conventional' collision where your legs are at risk, or one like that where your face/torso is in the firing line...
hehe I think if you submarine under another car, you're generally fine with that tub. The problem comes if you hit something that wont move upwards, like a motorway central reservation.