ESP does not work when you get rammed

ESP does not work when you get rammed

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MattVXR87

Original Poster:

83 posts

182 months

Tuesday 18th January 2011
quotequote all
Always wondered about this one, unfortunately I have now experienced it first-hand.

Driving along a dual carriageway, on a slight left hand bend, I was in lane 2 doing about 30mph while gracefully accelerating to 40mph to overtake a car 50 yards ahead in lane 1.
I would wager that the centre of my steering wheel was pointing about 11 o clock, maybe 10:30 at most – so a very mild corner.

Next thing you know, a Seat Ibiza bumps into the back of me and sends me oversteering towards the nearside of the carriageway. I applied as much opposite lock as I could and slammed on.

Up over the curb I go, at an angle of about 80 degrees, stopping a foot or two short of a lamppost. I look to my right and the Seat accelerates hard into the distance, along with 3 or 4 cars that were following us. No-body stopped.

I checked the car over and there’s not so much as a mark on the rear bumper, and god knows how but the front bumper managed to clear the curb without being ripped off. The wheels seem ok too, so in all a very lucky escape.

Obviously I’m incredibly pissed off; some fker rammed me on purpose and none of the following cars stopped to see if I was ok. I have reported this to the police who will check for CCTV but I won’t get my hopes up.

Interesting how ESP did sod all though, as the conditions was dry and my tyres are good. Perhaps it tried but didn’t have enough space to intervene; perhaps on a motorway it would have been more effective. Either way I didn’t see no flashing light in my peripheral vision but as you can appreciate it was the last thing on my mind.

I know in a FWD car you should boot it in an oversteer skid, but who really is going to have the reactions and skill to drop two gears, apply full throttle and full opposite lock within a split second?

kambites

68,179 posts

226 months

Tuesday 18th January 2011
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I'd say it's worth reporting that one to the police, hit and run is a serious offense.

Mr Will

13,719 posts

211 months

Tuesday 18th January 2011
quotequote all
ESP works by braking individual wheels. You already had the brakes fully applied. I don't know if it is able to release the brakes on individual wheels against the drivers wishes to change the angle of the car, but if it can't then that's your explanation.

HellDiver

5,708 posts

187 months

Tuesday 18th January 2011
quotequote all
ESP can't defy the laws of physics.

mikezs

319 posts

178 months

Tuesday 18th January 2011
quotequote all
HellDiver said:
ESP can't defy the laws of physics.
WHAT!?

Crusoe

4,072 posts

236 months

Tuesday 18th January 2011
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So you were going slowly and pulled out on someone in your blind spot who managed to avoid hitting you hard enough to leave any marks and you are blaming him/her?

Rawwr

22,722 posts

239 months

Tuesday 18th January 2011
quotequote all
HellDiver said:
ESP can't defy the laws of physics.
Precisely. Anything subjected to a moment of shock will be instantly beyond any kind of correction, electronic or otherwise.

MattVXR87

Original Poster:

83 posts

182 months

Tuesday 18th January 2011
quotequote all
Crusoe said:
So you were going slowly and pulled out on someone in your blind spot who managed to avoid hitting you hard enough to leave any marks and you are blaming him/her?
I am not even going to entertain you any further than, please log out and never log back in.

Rawwr said:
HellDiver said:
ESP can't defy the laws of physics.
Precisely. Anything subjected to a moment of shock will be instantly beyond any kind of correction, electronic or otherwise.
I had kind of guessed that, but always wondered how the system would work in practice. I guess theres not much 4 skinny tyres can do when they are supporting the weight of two cars.

Uriel

3,244 posts

256 months

Tuesday 18th January 2011
quotequote all
Are you sure the Seat actually hit you and it wasn't a pothole or something? What makes you think he rammed you on purpose?

Granted, there are some twunts about that will scarper after an incident, but I'd imagine that most people would stop. And that most drivers witnessing someone being deliberately rammed on the road would also stop. Seems like quite a stretch that you encountered someone crazy enough to deliberately ram someone, got hit, for them to not stop, for the witnesses to not stop and to have no physical evidence of a collision. Not saying it didn't happen exactly as it sounds, but Occam's Razor and all that...

Rawwr

22,722 posts

239 months

Tuesday 18th January 2011
quotequote all
MattVXR87 said:
I had kind of guessed that, but always wondered how the system would work in practice. I guess theres not much 4 skinny tyres can do when they are supporting the weight of two cars.
Think of it like this: If you were stood in front of me and I pushed you, your legs and body would be able to counter it easily as the moment of shock is pretty slight. If I ran up behind you as fast as I could and pushed you, there's just no time to react to it and you'd be on the floor.

MattVXR87

Original Poster:

83 posts

182 months

Tuesday 18th January 2011
quotequote all
Uriel said:
Are you sure the Seat actually hit you and it wasn't a pothole or something? What makes you think he rammed you on purpose?

Granted, there are some twunts about that will scarper after an incident, but I'd imagine that most people would stop. And that most drivers witnessing someone being deliberately rammed on the road would also stop. Seems like quite a stretch that you encountered someone crazy enough to deliberately ram someone, got hit, for them to not stop, for the witnesses to not stop and to have no physical evidence of a collision. Not saying it didn't happen exactly as it sounds, but Occam's Razor and all that...
Yeah. Seen it coming, all too fast I'm afraid. Must have been stolen, or perhaps he had a domestic.

HellDiver

5,708 posts

187 months

Tuesday 18th January 2011
quotequote all
doogz said:
mikezs said:
HellDiver said:
ESP can't defy the laws of physics.
WHAT!?
He heard someone else saying it in another thread, and repeated it.
No, you both are just clueless. I would explain it, but you wouldn't understand.

mnkiboy

4,409 posts

171 months

Tuesday 18th January 2011
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It wasn't Jason Plato was it? Sounds like the kind of thing he would do.

pugwash4x4

7,556 posts

226 months

Tuesday 18th January 2011
quotequote all
you saw it coming but didn't move out of the way?

am i missing something?

mikezs

319 posts

178 months

Tuesday 18th January 2011
quotequote all
HellDiver said:
doogz said:
mikezs said:
HellDiver said:
ESP can't defy the laws of physics.
WHAT!?
He heard someone else saying it in another thread, and repeated it.
No, you both are just clueless. I would explain it, but you wouldn't understand.
They learnt the laws of physics from ESP.

g3org3y

20,897 posts

196 months

Tuesday 18th January 2011
quotequote all
eek Do you really think it was intentional? That's pretty bloody serious!

mikezs said:
HellDiver said:
ESP can't defy the laws of physics.
WHAT!?
Now winter tyres are a different matter. smile

trickywoo

12,196 posts

235 months

Tuesday 18th January 2011
quotequote all
kambites said:
hit and run is a serious offense.
Not to the police. They couldn't give a st.

Lucas Ayde

3,688 posts

173 months

Tuesday 18th January 2011
quotequote all
MattVXR87 said:
I know in a FWD car you should boot it in an oversteer skid, but who really is going to have the reactions and skill to drop two gears, apply full throttle and full opposite lock within a split second?
Why, any of the resident PH driving gods of course. wink

Glad to hear you got out of it OK. That's the main thing.

RobM77

35,349 posts

239 months

Tuesday 18th January 2011
quotequote all
The OP was braking hard, and I'm sure that'll take priority. Braking exacerbates oversteer because of weight transfer, and I don't think ESP would not allow you to welly the brakes just so it could pull the car straight again.

4Q

1,277 posts

192 months

Tuesday 18th January 2011
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MattVXR87 said:
I know in a FWD car you should boot it in an oversteer skid
Only if you're Jason Plato in a BTCC race and you've been told you're getting no sex unless you win.

As a mere mortal I was taught to kill the power (by pressing the clutch pedal), steer into the spin and wait for the car to sort itself out with the weight transfer over to the front wheels.