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How accurate are our speedometers?

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Old Dec 15, 2006 | 03:44 PM
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[QUOTE=hodgeee;1558120714]Oh yeah, one last thing. I was only at that top speed for just a moment, and then I let off. That means that this guys was watching me for a while, and radaring me the whole time!!!!

How else could he have shown me the radar with that number on it!?!?

QUOTE]

How else. easy. Just do not clear the speed off the unit after clocking the last victim Of course none of our LEOS on here would do such a thing.
Old Dec 15, 2006 | 03:48 PM
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steer with 1 finger....because the wheels were barely on the ground

IB4TL
Old Dec 15, 2006 | 03:52 PM
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Hmmm...well, I'd fight the ticket, just because it'll kill your ins, or they may even drop you.I got out of a 184mph in a 55mph zone and an"excess of one hundred" in a 20mph simply because I hired a lawyer. Losing your licence or insurance dropping you costs far more than a good badass lawyer. You can usually agree to pay a higher fine and get the ticket dropped to improper equipment.At that high of a speed, hope you have an understanding DA . BTW....you can actually outrun police helicopters, it's just they go so high up and can see a longer distance. It's the radio you can't outrun.
Old Dec 15, 2006 | 04:04 PM
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Originally Posted by hodgeee
so I look down and see that I am already doing about 175mph
I'm a little suprised that this thread is still alive.

I have a suggestion. Why don't the guys posting about their excessive speeding tickets & extreme speeds on public roads do humanity a favor and keep those speeds on a closed course / race track where they belong. Just MHO.

Last edited by Norm_427; Dec 15, 2006 at 04:07 PM.
Old Dec 15, 2006 | 04:22 PM
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Both the C5 and C6 Speedos are dead ***** on accurate (assuming correct tire pressure and OEM tires). Verified both by in-car mounted, factory calibrated police radar (MPH K-55) and WAAS GPS over all speed ranges I dared. Often times, police radar used from the roadside (or off into the bushes) will experience 'Tangent Error'. This is when the radar is being broadcast (and received) off the access of travel of the target vehicle (your Vette). The greater the angle off the targets line of travel, the greater the error of the radar correctly determining the target speed. The greater the angle, the speed will be lower than actual target speed. All that having been said, Johnny Law was probably well off to the side of the road, enjoying doughnuts when you blasted by and he just recorded a speed with a 'high tangent error'. You Vette speedo was dead on.
Old Dec 15, 2006 | 04:33 PM
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Originally Posted by Gearhead Jim
Checked my C6 speedo and HUD against a GPS in the car at 30, 60, 90 mph. They all agreed within 1 mph at each speed.
And that's about the best you can do digitally.
99.001 mph and 99.99 mph will still read 99 mph digitally.
Old Dec 15, 2006 | 07:46 PM
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I drive through there all the time to go visit my daughter in Salt Lake City. My driving from S. Calif.. The NHP has always watched that area as previously mentioned for the same reason previously mentioned. Get yourself a ValentineOne radar/laser detector. They are worth their weight in gold. I'm going through there again next Wednesday and will be watching again. Another bad place is just slightly north of Mesquite, NV in Arizona and of course from the Calif. border into Las Vegas is always mined with NHP, except on Friday nights when the traffic is terrible...they don't want us Californian's to stop spending our money up there, so they don't appear to write as many tickets on that day. I might be full of crap now too as I try to avoid that day on my trips. Thats just what I use to see.
Old Dec 15, 2006 | 11:33 PM
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Old Dec 16, 2006 | 10:59 AM
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Originally Posted by hodgeee


How else could he have shown me the radar with that number on it!?!?
Peak hold or lock function:

Old Dec 17, 2006 | 10:48 AM
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Originally Posted by hodgeee
Oh yeah, one last thing. I was only at that top speed for just a moment, and then I let off. That means that this guys was watching me for a while, and radaring me the whole time!!!!

How else could he have shown me the radar with that number on it!?!?

That means this guy just sits out there 30 miles out in the middle of the desert, 30 miles from Vegas, and 30 miles from Logandale, and just watches this big open patch, cause he knows that people are going to open it up there. I bet he has written some whopper tickets there! I bet I aint even close to being his fastest, cause he was calm and cool and polite to me the whole time he wrote me up! That just burns my chaps!!
Cop in the middle of nowhere. "Protect and serve" my butt. He should have been wearing a mask. On the other hand, you should invest in a 8500 or V1.
Old Dec 17, 2006 | 12:21 PM
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Most of us do stupid things from time to time! I got stopped in NYS not to many years ago doing WELL into triple digits with my Porsche. I was on the NYS Thruway late at night and decided to see what this baby would do. At the time I was a CT state LEO and nothing happened except to politely ask me to slow down while driving in New York State! I know some are going to howl it’s wasn’t fair but lots of things in life aren’t fair. It was a stupid moment on my part that fortunately didn’t cost me or anyone else anything bad. If I lived out west however I know it’d be very difficult not to test out my vette a few times!
Old Dec 17, 2006 | 03:58 PM
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When he said he could see for about 3 miles and no traffic, I don't think a radar detector would help.

With no one in front of him to trigger the police radar, a detector would not go off until he was checked.

And, I'm sure these guys are running instant on radar and not constant mode, especially if he was sitting still waiting for someone to open it up on this road.
Old Dec 17, 2006 | 08:21 PM
  #33  
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you think you will have a license after this? Not in NY you would be in jail till you posted bond and the car would be impound and probably confiscated. Good Luck.
Old Dec 18, 2006 | 05:23 AM
  #34  
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Originally Posted by normlunt
I'm a little suprised that this thread is still alive.

I have a suggestion. Why don't the guys posting about their excessive speeding tickets & extreme speeds on public roads do humanity a favor and keep those speeds on a closed course / race track where they belong. Just MHO.
do you even drive your Z06? what a waste
Old Dec 18, 2006 | 05:25 AM
  #35  
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Originally Posted by glennhl
Why the close course? I do double digits in my car everyday on the way to work. Sometimes I get all the way up to 45 mph!
oh come on glen step on it do 90 and weave in and out, you can sleep in longer
Old Dec 20, 2006 | 02:00 AM
  #36  
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Originally Posted by 6spdC6
I made a few passes against one of those radar signs that say
SPEED LIMIT IS-------
Your Speed is---------
It appears to be quit accurate against the sign.
What I did not know was the device inside records on a graph speeds & time that go by. (NO CAMERA)
Let’s just say that I was a "BIT" over the speed limit doing the tests.
The sign was on a back road that led to a industrial complex and as it was a Holiday was kinda deserted.

A couple days later a good friend that is a LEO in that department stopped over to talk with me. He asked me "off the record" if I was the one with the high speed pass on the graph. He then said the officer in charge of Traffic Enforcement almost had a heart attack when he saw the graph results, and threatened massive bad things to whoever did it. My buddy recommended I stay away from that area for a while and NEVER use the sign as a speed checker unless I was a bit lower in speed.
i always try my best to max them out. just need a good window(no traffic) and i peg them @60mph real quick shame they dont read higher.
Old Dec 20, 2006 | 09:18 AM
  #37  
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Originally Posted by chris.shea
i always try my best to max them out. just need a good window(no traffic) and i peg them @60mph real quick shame they dont read higher.
The ones here go way over 60.

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Old Dec 20, 2006 | 02:23 PM
  #38  
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Quote:
Originally Posted by normlunt
I'm a little suprised that this thread is still alive.
I have a suggestion. Why don't the guys posting about their excessive speeding tickets & extreme speeds on public roads do humanity a favor and keep those speeds on a closed course / race track where they belong. Just MHO.

Originally Posted by jklarkpimp
do you even drive your Z06? what a waste
Yes jklarkpimp, I'm advocating restraint when driving on public roads. As a result, do you think I'm wasting my Z06?

BTW, I take my cars to the drags, autocross often and do track days (150 mph + on a closed course). What do you do? I hope you don't just flat-foot it on public roads...

From reading this thread where I see 175 MPH on a public highway and 100+ in a 25 MPH zone, I think some guys need to slow down, because,

1. If there is an accident and a driver is speeding excessively there is a reasonable chance that the driver will not only get a speeding ticket but face some pretty serious charges. Speeding tickets are often the least of the worries. If there is no accident and no one is hurt, then maybe it's just that the car is impounded and the driver goes without a license for an extended period of time (some people's livelihood depends on being able to drive) and pays for it in insurance rates. But, God forbid, if there is a wreck and someone dies as a result, it could be vehiclular homocide, jury trial ... and then you could be that sparkle in the eye of Big John in Cell Block A.

2. I watched the insurance industry of the late 1960s and early 1970s help kill performance cars (along with smog control). There was too much street drag racing going on and too many accidents. Cars in the last few years are getting some astounding HP and I hope the drivers are careful so that we can keep enjoying these cars.

3. When a Corvette goes screaming by, it probably just adds to the public's negative perception of some Corvette owners.

Just MHO.

Norm

Last edited by Norm_427; Dec 20, 2006 at 02:43 PM.
Old Dec 20, 2006 | 03:50 PM
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Originally Posted by normlunt

3. When a Corvette goes screaming by, it probably just adds to the public's negative perception of some Corvette owners.

Just MHO.

Norm
Personally before I got a vette seeing them fly by just made me envious. I do get your point though.
Old Dec 20, 2006 | 04:49 PM
  #40  
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I would have done the same thing, and, if I knew for sure that the LEO would treat me as nicely and not give me a ticket for Careless driving, I would pay him on the spot to see if it will really do the 185! Three miles of visiablity is good enough warning unless a Jack Rabbitt decides to step across the road , and in that case, may we both R.I.P.

35- 40,000 people killed a year in the US in car accidents. I will take my chances @ speed in the desert in a new well maintained Vette over dodging drunks and Socker Moms talking on the cell phone in suburbia.



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