[Z06] GPS-verified 200 MPH in Z06 on Autobahn
05-10-2008, 10:51 AM
#62
Pro
... it's sucking down about 1/3 gallon per mile.
05-10-2008, 01:31 PM
#64
Burning Brakes
In my experience at the US speed limit , GPS reads 2-3% higher than calibrated speed. This is because GPS uses a great circle calculation of distance, which is larger than the distance you travel over the ground. Since r=d/t, and since GPS distance is greater, r or rate is apparently greater.
Last edited by Norm_427; 05-11-2008 at 03:12 PM.
05-10-2008, 02:43 PM
#65
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In my experience at the US speed limit , GPS reads 2-3% higher than calibrated speed. This is because GPS uses a great circle calculation of distance, which is larger than the distance you travel over the ground. Since r=d/t, and since GPS distance is greater, r or rate is apparently greater.
05-10-2008, 03:07 PM
#66
Le Mans Master
05-10-2008, 09:28 PM
#69
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CI 3-5-6-7-8 Veteran
Hey man... this was posted in C6 Gen and locked down 
Gonna post to a moderator that it's one of our own members and done in a fully legal fashion 
Gonna post to a moderator that it's one of our own members and done in a fully legal fashion
The C6Z is an incredible machine that will just hall ***. 
05-11-2008, 02:00 AM
#71
I ♥ My Corvette
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05-11-2008, 09:55 AM
#72
Burning Brakes
BTW, at the start of recent trip down the west coast I zeroed my Z06 odometer and my Garmin 496 GPS and began the drive. After 600 miles there was less than 2/10 of a mile difference between the 2 readings.
Last edited by Norm_427; 05-11-2008 at 09:59 AM.
05-11-2008, 10:14 AM
#73
Team Owner
This video taken from a car going about 95 MPH. I don't know which run this was, but I was going at least 180+ MPH...
http://www.youtube.com/watch?v=syWJbD1rf0Y
http://www.youtube.com/watch?v=syWJbD1rf0Y
02-05-2010, 02:36 PM
#77
Team Owner
As long as we ressurected it (I never saw it the first time), let me jump in and say this. I recently made a run on a test track on my 2010 Kawasaki Concours. At 164 indicated it cut out on me. The GPS showed my max speed as 154.
Everyone on the Concours forum said there was not a speed limiter on the 08-09s. But then a guy with connections to the factory made some calls and confirmed that all 2010 Kawasakis are limited to 154. Looks like the GPS is dead accurate even at that speed.
Everyone on the Concours forum said there was not a speed limiter on the 08-09s. But then a guy with connections to the factory made some calls and confirmed that all 2010 Kawasakis are limited to 154. Looks like the GPS is dead accurate even at that speed.
02-05-2010, 03:26 PM
#79
If your Gothenburg is the one in Sweden, a well respected tuner in the German Corvetteforum named "Till" does this conversion, except for the transmission from 2008 on, he is still working on a solution for that one AFAIK...
There are some users in that forum with modded Z06´s who accomplish the MUCH better acceleration from ~160 to 205 mph!
Best, Bernd
02-05-2010, 04:01 PM
#80
Drifting
I hate to break your bubble, but civilian use GPS systems have a margin of error of about +-5%, some older units are off by as much as 15%! So unless you were actually verified using a CALIBRATED Doppler radar or Lidar, then this is far from "verified." Using GPS to validify this is not the smart way of doing it, unless you are using Military SatComs.
If he recorded those speeds for a period of 10-20 seconds, chances are better than even that those were correct to within .5-1% (in a straight line), I'm sure.