E30 acceleration stats? help

[bmwmike]

Alright, I found some old Car & Driver articles on Fred's site (strictlyeta.net) that contained some acceleration stats.

0-30 = 2.4 seconds
0-40 = 3.7 seconds

So, I figured out that going from 30-40 takes 1.3 seconds, so 25-40 would be somewhere between 1.3 and 3.7 seconds, but does anybody have a more accurate estimation?

-Erik

so go time the light and say its 1.5 seconds, you could say it would take between 1.3 and 3.7 seconds to accelerate that fast, then you have to factor in your reaction time, whats the fastest possible reaction time, like .2?

[ptownTSI]

my jeep used to go 0-40 in 2.4 seconds. bwahaha i used to go from 25-40 easy during a yellow light. one time i had my dads 545i out and i swear i went from 30-50 in a yellow light that was in a 30mph zone w/out even trying.

good luck fighting the ticket erik. just tell the judge there is no way your 20 year old BMW could go that fast, you just keep it clean.

[Macktheknife]

If I had the time I'd run through some physics based on that... but I'm a bit pressed. There really is not enough distance in the average intersection to make that kind of acceleration, for one thing. For another, to get that max acceleration in a 325i you'd have to be in 2nd gear and full throttle. You can make the argument, for example, that you'd just shifted to 3rd and wouldn't have had the time to make a 3-2 downshift and THEN accelerate at the claimed rate. Just thinking.

[delatlanta1281]

this is retarted! why did you get the ticket? what were you doing? this physics crap isn't going to work, you are wasting the court's time.

[s0urce]

this is retarted! why did you get the ticket? what were you doing? this physics crap isn't going to work, you are wasting the court's time.

True, more than likely hes going to show up to his arraignment with a worthless case ready to go, only to have the judge say "If you want to plead your case on the matter, I'll set you up a court date".

Im yet to see a Judge/Commissioner drop a ticket based on based from REAL logic or math. Throw at them all the forumlas and theories you want, that shit seldom flies in traffic court.

Good luck man.

[AdironRider]

Do in and instead of contesting the ticket just ask for a reduction form. Theyll drop your ticket down to a minimal fine and you wont get any points and they still get a few bucks. Its win win.

[bmwmike]

yeah unless you have a lawyer, they wont care what you say. If its your first ticket, they'll give you a "continuous dismissal" meaning if you can go 6 months without a moving violation the ticket is dropped and never shows up on your record. Then you would pay the ticket or half the ticket. Of course thats MN, not sure how your state works..

[imsotyerred]

30mph--->13.4 m/s
40mph--->17.9 m/s
time=1.3 seconds

change in velocity over change in time=3.5 m/s^2

if yellow light stays for 2.5 seconds, using physics



maximum velocity in 2.5 seconds=13.4m/s+(3.5x2.5)=22m/s or about 50 mph

i'm afraid you won't win this one with numbers, my friend:tsk:

[erik325i]

Well, that was too easy... I show up all prepared ready to tell the judge why the cop is a lying sack of shit and the cop didn't show up, so the case was dismissed. I win. One to nothing!

For everyone wondering about how I got the ticket, here is the story:




I was driving pass downtown Campbell (25mph zone), and right before I pass through an intersection, the light turns yellow and I gently accelerate. (I would have easily made that yellow even if I had lifted and coasted through the light)
Sitting at the red light waiting to turn left was a cop. He pulled up behind me and tailgated me for about three blocks. I could see him running my plates through the computer. Finally he decides to pull me over.

pig: "Can I see liscence, registration, proof of insurrance?"
me: I give him the requested papers
pig: "Do you know why I pulled you over?"
me: "no. I don't"
pig: goes back to car and enters in my info. probably checking for any outstanding warrants. Comes back in a few minutes
pig: "so, is there any reason you accelerated through the intersection back there?
me: "no, the light just turned yellow, and just drove through it."
pig: goes back to his car to check on someting else. Comes back in a few minutes.
pig: "I'm feeling nice today, so I will give you a choice. You can either have a ticket for running the red light, or a ticket for speeding"
me: "What?! (cunfused face) but I didn't do either of them...
pig: getting defensive. "hey, I am just trying to be nice here. i could write you up for both. It's your choice."
me: "The light was yellow and I wasn't speeding..."
pig: "then maybe you should tell the judge why you accelerated through the yellow"
me: trying to decide which one would be easier to fight in court.
pig: after a few minutes of me thinking, the cop gets impatient and tells me to chose one. He reminds me again that he is just being nice, and could write me up for both.
me: "I'll take the red light violation"
pig: "are you sure about that one? The red light violation is $360 and the speeding ticket is only a hundred something"
me: "so you recommend the speeding ticket?"
pig: I don't recommend anything. I'm just telling you what each of them are..."

I end up taking the speeding ticket.

He wrote on the ticket "visually estimated 40 in a 25"

-Erik

[moatilliatta]

yeah i just got one of those Visual estamated bs ones. in a place 100 miles away. down in bowling green ky. and i have to pay for it soon. but its locked in my car and my key broke. yeah most the time i hear about the officer just not showing up to court. i got a joke...... whats something blue and sits on the toilet.????











A COP ON DUTY

[Sean]

Wow, I am VERY happy to say I've never had to deal with such a horrible situation.

What kind of bullshit is that? WTF is his problem? It's almost like he thinks HES ABOVE the law. You don't run a red light, unless you run a red light. It was yellow - that's not running a red light.

Glad it all worked out man. I woulda fought that one to the death too!

[erik325i]

What kind of bullshit is that? WTF is his problem? It's almost like he thinks HES ABOVE the law. You don't run a red light, unless you run a red light. It was yellow - that's not running a red light.

Glad it all worked out man. I woulda fought that one to the death too!

Yeah seriously, I was so pissed off. I wanted to just kick has ass. What gets me is how the cop always try to pretend to be the "nice guy". I'm feeling nice today, so you get to chose which bullshit ticket you get... :down:

There was no way I was going to pay that ticket and let him win.

-Erik